]> git.saurik.com Git - wxWidgets.git/blobdiff - src/generic/grid.cpp
patch from Mike Oliver <oliver@math.ucla.edu> to have correct position in wxTree...
[wxWidgets.git] / src / generic / grid.cpp
index 9af3fd5575d6df26345a924ed5d4418f477c8d75..2a92e9b7487827d48d2cd189ad874a8d777254ec 100644 (file)
@@ -1,5 +1,5 @@
-/////////////////////////////////////////////////////////////////////////////
-// Name:        grid.cpp
+///////////////////////////////////////////////////////////////////////////
+// Name:        generic/grid.cpp
 // Purpose:     wxGrid and related classes
 // Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
 // Modified by:
@@ -9,11 +9,19 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
 #ifdef __GNUG__
     #pragma implementation "grid.h"
 #endif
 
-// For compilers that support precompilation, includes "wx/wx.h".
+// For compilers that support precompilatixon, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
 #include "wx/defs.h"
     #include "wx/dcclient.h"
     #include "wx/settings.h"
     #include "wx/log.h"
+    #include "wx/textctrl.h"
+    #include "wx/checkbox.h"
+    #include "wx/combobox.h"
+    #include "wx/valtext.h"
 #endif
 
-// this include needs to be outside precomp for BCC
 #include "wx/textfile.h"
+#include "wx/spinctrl.h"
+#include "wx/tokenzr.h"
+
+#include "wx/grid.h"
+#include "wx/generic/gridsel.h"
+
+#if defined(__WXMOTIF__)
+    #define WXUNUSED_MOTIF(identifier)  WXUNUSED(identifier)
+#else
+    #define WXUNUSED_MOTIF(identifier)  identifier
+#endif
+
+#if defined(__WXGTK__)
+    #define WXUNUSED_GTK(identifier)    WXUNUSED(identifier)
+#else
+    #define WXUNUSED_GTK(identifier)    identifier
+#endif
 
-#include "wx/generic/grid.h"
+// Required for wxIs... functions
+#include <ctype.h>
 
 // ----------------------------------------------------------------------------
-// array classes instantiation
+// array classes
 // ----------------------------------------------------------------------------
 
+WX_DEFINE_EXPORTED_ARRAY(wxGridCellAttr *, wxArrayAttrs);
+
 struct wxGridCellWithAttr
 {
     wxGridCellWithAttr(int row, int col, wxGridCellAttr *attr_)
@@ -58,7 +89,7 @@ struct wxGridCellWithAttr
     wxGridCellAttr  *attr;
 };
 
-WX_DECLARE_OBJARRAY(wxGridCellWithAttr, wxGridCellWithAttrArray);
+WX_DECLARE_EXPORTED_OBJARRAY(wxGridCellWithAttr, wxGridCellWithAttrArray);
 
 #include "wx/arrimpl.cpp"
 
@@ -82,6 +113,7 @@ private:
     void OnPaint( wxPaintEvent& event );
     void OnMouseEvent( wxMouseEvent& event );
     void OnKeyDown( wxKeyEvent& event );
+    void OnKeyUp( wxKeyEvent& );
 
     DECLARE_DYNAMIC_CLASS(wxGridRowLabelWindow)
     DECLARE_EVENT_TABLE()
@@ -101,6 +133,7 @@ private:
     void OnPaint( wxPaintEvent &event );
     void OnMouseEvent( wxMouseEvent& event );
     void OnKeyDown( wxKeyEvent& event );
+    void OnKeyUp( wxKeyEvent& );
 
     DECLARE_DYNAMIC_CLASS(wxGridColLabelWindow)
     DECLARE_EVENT_TABLE()
@@ -119,6 +152,7 @@ private:
 
     void OnMouseEvent( wxMouseEvent& event );
     void OnKeyDown( wxKeyEvent& event );
+    void OnKeyUp( wxKeyEvent& );
     void OnPaint( wxPaintEvent& event );
 
     DECLARE_DYNAMIC_CLASS(wxGridCornerLabelWindow)
@@ -151,19 +185,57 @@ private:
     void OnPaint( wxPaintEvent &event );
     void OnMouseEvent( wxMouseEvent& event );
     void OnKeyDown( wxKeyEvent& );
+    void OnKeyUp( wxKeyEvent& );
+    void OnEraseBackground( wxEraseEvent& );
+
 
     DECLARE_DYNAMIC_CLASS(wxGridWindow)
     DECLARE_EVENT_TABLE()
 };
 
+
+
+class wxGridCellEditorEvtHandler : public wxEvtHandler
+{
+public:
+    wxGridCellEditorEvtHandler()
+        : m_grid(0), m_editor(0)
+        { }
+    wxGridCellEditorEvtHandler(wxGrid* grid, wxGridCellEditor* editor)
+        : m_grid(grid), m_editor(editor)
+        { }
+
+    void OnKeyDown(wxKeyEvent& event);
+    void OnChar(wxKeyEvent& event);
+
+private:
+    wxGrid*             m_grid;
+    wxGridCellEditor*   m_editor;
+    DECLARE_DYNAMIC_CLASS(wxGridCellEditorEvtHandler)
+    DECLARE_EVENT_TABLE()
+};
+
+
+IMPLEMENT_DYNAMIC_CLASS( wxGridCellEditorEvtHandler, wxEvtHandler )
+BEGIN_EVENT_TABLE( wxGridCellEditorEvtHandler, wxEvtHandler )
+    EVT_KEY_DOWN( wxGridCellEditorEvtHandler::OnKeyDown )
+    EVT_CHAR( wxGridCellEditorEvtHandler::OnChar )
+END_EVENT_TABLE()
+
+
+
+// ----------------------------------------------------------------------------
 // the internal data representation used by wxGridCellAttrProvider
-//
-// TODO make it more efficient
-class WXDLLEXPORT wxGridCellAttrProviderData
+// ----------------------------------------------------------------------------
+
+// this class stores attributes set for cells
+class WXDLLEXPORT wxGridCellAttrData
 {
 public:
     void SetAttr(wxGridCellAttr *attr, int row, int col);
     wxGridCellAttr *GetAttr(int row, int col) const;
+    void UpdateAttrRows( size_t pos, int numRows );
+    void UpdateAttrCols( size_t pos, int numCols );
 
 private:
     // searches for the attr for given cell, returns wxNOT_FOUND if not found
@@ -172,6 +244,90 @@ private:
     wxGridCellWithAttrArray m_attrs;
 };
 
+// this class stores attributes set for rows or columns
+class WXDLLEXPORT wxGridRowOrColAttrData
+{
+public:
+    // empty ctor to suppress warnings
+    wxGridRowOrColAttrData() { }
+    ~wxGridRowOrColAttrData();
+
+    void SetAttr(wxGridCellAttr *attr, int rowOrCol);
+    wxGridCellAttr *GetAttr(int rowOrCol) const;
+    void UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols );
+
+private:
+    wxArrayInt m_rowsOrCols;
+    wxArrayAttrs m_attrs;
+};
+
+// NB: this is just a wrapper around 3 objects: one which stores cell
+//     attributes, and 2 others for row/col ones
+class WXDLLEXPORT wxGridCellAttrProviderData
+{
+public:
+    wxGridCellAttrData m_cellAttrs;
+    wxGridRowOrColAttrData m_rowAttrs,
+                           m_colAttrs;
+};
+
+
+// ----------------------------------------------------------------------------
+// data structures used for the data type registry
+// ----------------------------------------------------------------------------
+
+struct wxGridDataTypeInfo
+{
+    wxGridDataTypeInfo(const wxString& typeName,
+                       wxGridCellRenderer* renderer,
+                       wxGridCellEditor* editor)
+        : m_typeName(typeName), m_renderer(renderer), m_editor(editor)
+        { }
+
+    ~wxGridDataTypeInfo()
+    {
+        wxSafeDecRef(m_renderer);
+        wxSafeDecRef(m_editor);
+    }
+
+    wxString            m_typeName;
+    wxGridCellRenderer* m_renderer;
+    wxGridCellEditor*   m_editor;
+};
+
+
+WX_DEFINE_EXPORTED_ARRAY(wxGridDataTypeInfo*, wxGridDataTypeInfoArray);
+
+
+class WXDLLEXPORT wxGridTypeRegistry
+{
+public:
+  wxGridTypeRegistry() {}
+    ~wxGridTypeRegistry();
+
+    void RegisterDataType(const wxString& typeName,
+                     wxGridCellRenderer* renderer,
+                     wxGridCellEditor* editor);
+
+    // find one of already registered data types
+    int FindRegisteredDataType(const wxString& typeName);
+
+    // try to FindRegisteredDataType(), if this fails and typeName is one of
+    // standard typenames, register it and return its index
+    int FindDataType(const wxString& typeName);
+
+    // try to FindDataType(), if it fails see if it is not one of already
+    // registered data types with some params in which case clone the
+    // registered data type and set params for it
+    int FindOrCloneDataType(const wxString& typeName);
+
+    wxGridCellRenderer* GetRenderer(int index);
+    wxGridCellEditor*   GetEditor(int index);
+
+private:
+    wxGridDataTypeInfoArray m_typeinfo;
+};
+
 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------
@@ -180,7 +336,19 @@ private:
 #define WXGRID_DRAW_LINES 1
 #endif
 
-//////////////////////////////////////////////////////////////////////
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+//#define DEBUG_ATTR_CACHE
+#ifdef DEBUG_ATTR_CACHE
+    static size_t gs_nAttrCacheHits = 0;
+    static size_t gs_nAttrCacheMisses = 0;
+#endif // DEBUG_ATTR_CACHE
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
 
 wxGridCellCoords wxGridNoCellCoords( -1, -1 );
 wxRect           wxGridNoCellRect( -1, -1, -1, -1 );
@@ -189,237 +357,2318 @@ wxRect           wxGridNoCellRect( -1, -1, -1, -1 );
 // TODO: fixed so far - make configurable later (and also different for x/y)
 static const size_t GRID_SCROLL_LINE = 10;
 
+// the size of hash tables used a bit everywhere (the max number of elements
+// in these hash tables is the number of rows/columns)
+static const int GRID_HASH_SIZE = 100;
+
+// ============================================================================
+// implementation
+// ============================================================================
+
 // ----------------------------------------------------------------------------
-// wxGridCellAttrProviderData
+// wxGridCellEditor
 // ----------------------------------------------------------------------------
 
-void wxGridCellAttrProviderData::SetAttr(wxGridCellAttr *attr,
-                                         int row, int col)
+wxGridCellEditor::wxGridCellEditor()
 {
-    int n = FindIndex(row, col);
-    if ( n == wxNOT_FOUND )
-    {
-        // add the attribute
-        m_attrs.Add(new wxGridCellWithAttr(row, col, attr));
-    }
-    else
-    {
-        if ( attr )
-        {
-            // change the attribute
-            m_attrs[(size_t)n].attr = attr;
-        }
-        else
-        {
-            // remove this attribute
-            m_attrs.RemoveAt((size_t)n);
-        }
-    }
+    m_control = NULL;
 }
 
-wxGridCellAttr *wxGridCellAttrProviderData::GetAttr(int row, int col) const
+
+wxGridCellEditor::~wxGridCellEditor()
 {
-    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+    Destroy();
+}
 
-    int n = FindIndex(row, col);
-    if ( n != wxNOT_FOUND )
+void wxGridCellEditor::Create(wxWindow* WXUNUSED(parent),
+                              wxWindowID WXUNUSED(id),
+                              wxEvtHandler* evtHandler)
+{
+    if ( evtHandler )
+        m_control->PushEventHandler(evtHandler);
+}
+
+void wxGridCellEditor::PaintBackground(const wxRect& rectCell,
+                                       wxGridCellAttr *attr)
+{
+    // erase the background because we might not fill the cell
+    wxClientDC dc(m_control->GetParent());
+    dc.SetPen(*wxTRANSPARENT_PEN);
+    dc.SetBrush(wxBrush(attr->GetBackgroundColour(), wxSOLID));
+    dc.DrawRectangle(rectCell);
+
+    // redraw the control we just painted over
+    m_control->Refresh();
+}
+
+void wxGridCellEditor::Destroy()
+{
+    if (m_control)
     {
-        attr = m_attrs[(size_t)n].attr;
-        attr->IncRef();
-    }
+        m_control->PopEventHandler(TRUE /* delete it*/);
 
-    return attr;
+        m_control->Destroy();
+        m_control = NULL;
+    }
 }
 
-int wxGridCellAttrProviderData::FindIndex(int row, int col) const
+void wxGridCellEditor::Show(bool show, wxGridCellAttr *attr)
 {
-    size_t count = m_attrs.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+    m_control->Show(show);
+
+    if ( show )
     {
-        const wxGridCellCoords& coords = m_attrs[n].coords;
-        if ( (coords.GetRow() == row) && (coords.GetCol() == col) )
+        // set the colours/fonts if we have any
+        if ( attr )
         {
-            return n;
+            m_colFgOld = m_control->GetForegroundColour();
+            m_control->SetForegroundColour(attr->GetTextColour());
+
+            m_colBgOld = m_control->GetBackgroundColour();
+            m_control->SetBackgroundColour(attr->GetBackgroundColour());
+
+            m_fontOld = m_control->GetFont();
+            m_control->SetFont(attr->GetFont());
+
+            // can't do anything more in the base class version, the other
+            // attributes may only be used by the derived classes
         }
     }
+    else
+    {
+        // restore the standard colours fonts
+        if ( m_colFgOld.Ok() )
+        {
+            m_control->SetForegroundColour(m_colFgOld);
+            m_colFgOld = wxNullColour;
+        }
 
-    return wxNOT_FOUND;
-}
+        if ( m_colBgOld.Ok() )
+        {
+            m_control->SetBackgroundColour(m_colBgOld);
+            m_colBgOld = wxNullColour;
+        }
 
-// ----------------------------------------------------------------------------
-// wxGridCellAttrProvider
-// ----------------------------------------------------------------------------
+        if ( m_fontOld.Ok() )
+        {
+            m_control->SetFont(m_fontOld);
+            m_fontOld = wxNullFont;
+        }
+    }
+}
 
-wxGridCellAttrProvider::wxGridCellAttrProvider()
+void wxGridCellEditor::SetSize(const wxRect& rect)
 {
-    m_data = (wxGridCellAttrProviderData *)NULL;
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+    m_control->SetSize(rect, wxSIZE_ALLOW_MINUS_ONE);
 }
 
-wxGridCellAttrProvider::~wxGridCellAttrProvider()
+void wxGridCellEditor::HandleReturn(wxKeyEvent& event)
 {
-    delete m_data;
+    event.Skip();
 }
 
-void wxGridCellAttrProvider::InitData()
+bool wxGridCellEditor::IsAcceptedKey(wxKeyEvent& event)
 {
-    m_data = new wxGridCellAttrProviderData;
+    // accept the simple key presses, not anything with Ctrl/Alt/Meta
+    return !(event.ControlDown() || event.AltDown());
 }
 
-wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col) const
+void wxGridCellEditor::StartingKey(wxKeyEvent& event)
 {
-    return m_data ? m_data->GetAttr(row, col) : (wxGridCellAttr *)NULL;
+    event.Skip();
 }
 
-void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
-                                     int row, int col)
+void wxGridCellEditor::StartingClick()
 {
-    if ( !m_data )
-        InitData();
-
-    m_data->SetAttr(attr, row, col);
 }
 
-//////////////////////////////////////////////////////////////////////
-//
-// Abstract base class for grid data (the model)
-//
-IMPLEMENT_ABSTRACT_CLASS( wxGridTableBase, wxObject )
-
+// ----------------------------------------------------------------------------
+// wxGridCellTextEditor
+// ----------------------------------------------------------------------------
 
-wxGridTableBase::wxGridTableBase()
+wxGridCellTextEditor::wxGridCellTextEditor()
 {
-    m_view = (wxGrid *) NULL;
-    m_attrProvider = (wxGridCellAttrProvider *) NULL;
+    m_maxChars = 0;
 }
 
-wxGridTableBase::~wxGridTableBase()
+void wxGridCellTextEditor::Create(wxWindow* parent,
+                                  wxWindowID id,
+                                  wxEvtHandler* evtHandler)
 {
-    delete m_attrProvider;
-}
+    m_control = new wxTextCtrl(parent, id, wxEmptyString,
+                               wxDefaultPosition, wxDefaultSize
+#if defined(__WXMSW__)
+                               , wxTE_PROCESS_TAB | wxTE_MULTILINE |
+                                 wxTE_NO_VSCROLL | wxTE_AUTO_SCROLL
+#endif
+                              );
 
-void wxGridTableBase::SetAttrProvider(wxGridCellAttrProvider *attrProvider)
-{
-    delete m_attrProvider;
-    m_attrProvider = attrProvider;
+    // TODO: use m_maxChars
+
+    wxGridCellEditor::Create(parent, id, evtHandler);
 }
 
-wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col)
+void wxGridCellTextEditor::PaintBackground(const wxRect& WXUNUSED(rectCell),
+                                           wxGridCellAttr * WXUNUSED(attr))
 {
-    if ( m_attrProvider )
-        return m_attrProvider->GetAttr(row, col);
-    else
-        return (wxGridCellAttr *)NULL;
+    // as we fill the entire client area, don't do anything here to minimize
+    // flicker
 }
 
-void wxGridTableBase::SetAttr(wxGridCellAttr *attr, int row, int col )
+void wxGridCellTextEditor::SetSize(const wxRect& rectOrig)
 {
-    if ( m_attrProvider )
-    {
-        m_attrProvider->SetAttr(attr, row, col);
-    }
-    else
+    wxRect rect(rectOrig);
+
+    // Make the edit control large enough to allow for internal
+    // margins
+    //
+    // TODO: remove this if the text ctrl sizing is improved esp. for
+    // unix
+    //
+#if defined(__WXGTK__)
+    if (rect.x != 0)
     {
-        // as we take ownership of the pointer and don't store it, we must
-        // free it now
-        attr->SafeDecRef();
+        rect.x += 1;
+        rect.y += 1;
+        rect.width -= 1;
+        rect.height -= 1;
     }
-}
+#else // !GTK
+    int extra_x = ( rect.x > 2 )? 2 : 1;
 
-bool wxGridTableBase::InsertRows( size_t pos, size_t numRows )
-{
-    wxFAIL_MSG( wxT("Called grid table class function InsertRows\n"
-                    "but your derived table class does not override this function") );
+// MB: treat MSW separately here otherwise the caret doesn't show
+// when the editor is in the first row.
+#if defined(__WXMSW__)
+    int extra_y = 2;
+#else
+    int extra_y = ( rect.y > 2 )? 2 : 1;
+#endif // MSW
 
-    return FALSE;
+#if defined(__WXMOTIF__)
+    extra_x *= 2;
+    extra_y *= 2;
+#endif
+    rect.SetLeft( wxMax(0, rect.x - extra_x) );
+    rect.SetTop( wxMax(0, rect.y - extra_y) );
+    rect.SetRight( rect.GetRight() + 2*extra_x );
+    rect.SetBottom( rect.GetBottom() + 2*extra_y );
+#endif // GTK/!GTK
+
+    wxGridCellEditor::SetSize(rect);
 }
 
-bool wxGridTableBase::AppendRows( size_t numRows )
+void wxGridCellTextEditor::BeginEdit(int row, int col, wxGrid* grid)
 {
-    wxFAIL_MSG( wxT("Called grid table class function AppendRows\n"
-                    "but your derived table class does not override this function"));
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
 
-    return FALSE;
+    m_startValue = grid->GetTable()->GetValue(row, col);
+
+    DoBeginEdit(m_startValue);
 }
 
-bool wxGridTableBase::DeleteRows( size_t pos, size_t numRows )
+void wxGridCellTextEditor::DoBeginEdit(const wxString& startValue)
 {
-    wxFAIL_MSG( wxT("Called grid table class function DeleteRows\n"
-                    "but your derived table class does not override this function"));
-
-    return FALSE;
+    Text()->SetValue(startValue);
+    Text()->SetInsertionPointEnd();
+    Text()->SetFocus();
 }
 
-bool wxGridTableBase::InsertCols( size_t pos, size_t numCols )
+bool wxGridCellTextEditor::EndEdit(int row, int col,
+                                   wxGrid* grid)
 {
-    wxFAIL_MSG( wxT("Called grid table class function InsertCols\n"
-                  "but your derived table class does not override this function"));
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
 
-    return FALSE;
-}
+    bool changed = FALSE;
+    wxString value = Text()->GetValue();
+    if (value != m_startValue)
+        changed = TRUE;
 
-bool wxGridTableBase::AppendCols( size_t numCols )
-{
-    wxFAIL_MSG(wxT("Called grid table class function AppendCols\n"
-                   "but your derived table class does not override this function"));
+    if (changed)
+        grid->GetTable()->SetValue(row, col, value);
 
-    return FALSE;
+    m_startValue = wxEmptyString;
+    Text()->SetValue(m_startValue);
+
+    return changed;
 }
 
-bool wxGridTableBase::DeleteCols( size_t pos, size_t numCols )
+
+void wxGridCellTextEditor::Reset()
 {
-    wxFAIL_MSG( wxT("Called grid table class function DeleteCols\n"
-                    "but your derived table class does not override this function"));
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
 
-    return FALSE;
+    DoReset(m_startValue);
 }
 
-
-wxString wxGridTableBase::GetRowLabelValue( int row )
+void wxGridCellTextEditor::DoReset(const wxString& startValue)
 {
-    wxString s;
-    s << row;
-    return s;
+    Text()->SetValue(startValue);
+    Text()->SetInsertionPointEnd();
 }
 
-wxString wxGridTableBase::GetColLabelValue( int col )
+bool wxGridCellTextEditor::IsAcceptedKey(wxKeyEvent& event)
 {
-    // default col labels are:
-    //   cols 0 to 25   : A-Z
-    //   cols 26 to 675 : AA-ZZ
-    //   etc.
-
-    wxString s;
-    unsigned int i, n;
-    for ( n = 1; ; n++ )
+    if ( wxGridCellEditor::IsAcceptedKey(event) )
     {
-        s += (_T('A') + (wxChar)( col%26 ));
-        col = col/26 - 1;
-        if ( col < 0 ) break;
-    }
+        int keycode = event.GetKeyCode();
+        switch ( keycode )
+        {
+            case WXK_NUMPAD0:
+            case WXK_NUMPAD1:
+            case WXK_NUMPAD2:
+            case WXK_NUMPAD3:
+            case WXK_NUMPAD4:
+            case WXK_NUMPAD5:
+            case WXK_NUMPAD6:
+            case WXK_NUMPAD7:
+            case WXK_NUMPAD8:
+            case WXK_NUMPAD9:
+            case WXK_MULTIPLY:
+            case WXK_NUMPAD_MULTIPLY:
+            case WXK_ADD:
+            case WXK_NUMPAD_ADD:
+            case WXK_SUBTRACT:
+            case WXK_NUMPAD_SUBTRACT:
+            case WXK_DECIMAL:
+            case WXK_NUMPAD_DECIMAL:
+            case WXK_DIVIDE:
+            case WXK_NUMPAD_DIVIDE:
+                return TRUE;
 
-    // reverse the string...
-    wxString s2;
-    for ( i = 0;  i < n;  i++ )
-    {
-        s2 += s[n-i-1];
+            default:
+                // accept 8 bit chars too if isprint() agrees
+                if ( (keycode < 255) && (isprint(keycode)) )
+                    return TRUE;
+        }
     }
 
-    return s2;
+    return FALSE;
 }
 
+void wxGridCellTextEditor::StartingKey(wxKeyEvent& event)
+{
+    // we don't check for !HasModifiers() because IsAcceptedKey() did it
 
+    // insert the key in the control
+    wxChar ch;
+    int keycode = event.GetKeyCode();
+    switch ( keycode )
+    {
+        case WXK_NUMPAD0:
+        case WXK_NUMPAD1:
+        case WXK_NUMPAD2:
+        case WXK_NUMPAD3:
+        case WXK_NUMPAD4:
+        case WXK_NUMPAD5:
+        case WXK_NUMPAD6:
+        case WXK_NUMPAD7:
+        case WXK_NUMPAD8:
+        case WXK_NUMPAD9:
+            ch = _T('0') + keycode - WXK_NUMPAD0;
+            break;
 
-//////////////////////////////////////////////////////////////////////
-//
-// Message class for the grid table to send requests and notifications
-// to the grid view
-//
+        case WXK_MULTIPLY:
+        case WXK_NUMPAD_MULTIPLY:
+            ch = _T('*');
+            break;
 
-wxGridTableMessage::wxGridTableMessage()
-{
-    m_table = (wxGridTableBase *) NULL;
-    m_id = -1;
-    m_comInt1 = -1;
+        case WXK_ADD:
+        case WXK_NUMPAD_ADD:
+            ch = _T('+');
+            break;
+
+        case WXK_SUBTRACT:
+        case WXK_NUMPAD_SUBTRACT:
+            ch = _T('-');
+            break;
+
+        case WXK_DECIMAL:
+        case WXK_NUMPAD_DECIMAL:
+            ch = _T('.');
+            break;
+
+        case WXK_DIVIDE:
+        case WXK_NUMPAD_DIVIDE:
+            ch = _T('/');
+            break;
+
+        default:
+            if ( keycode < 256 && keycode >= 0 && isprint(keycode) )
+            {
+                // FIXME this is not going to work for non letters...
+                if ( !event.ShiftDown() )
+                {
+                    keycode = tolower(keycode);
+                }
+
+                ch = (wxChar)keycode;
+            }
+            else
+            {
+                ch = _T('\0');
+            }
+    }
+
+    if ( ch )
+    {
+        Text()->AppendText(ch);
+    }
+    else
+    {
+        event.Skip();
+    }
+}
+
+void wxGridCellTextEditor::HandleReturn( wxKeyEvent&
+                                         WXUNUSED_GTK(WXUNUSED_MOTIF(event)) )
+{
+#if defined(__WXMOTIF__) || defined(__WXGTK__)
+    // wxMotif needs a little extra help...
+    size_t pos = (size_t)( Text()->GetInsertionPoint() );
+    wxString s( Text()->GetValue() );
+    s = s.Left(pos) + "\n" + s.Mid(pos);
+    Text()->SetValue(s);
+    Text()->SetInsertionPoint( pos );
+#else
+    // the other ports can handle a Return key press
+    //
+    event.Skip();
+#endif
+}
+
+void wxGridCellTextEditor::SetParameters(const wxString& params)
+{
+    if ( !params )
+    {
+        // reset to default
+        m_maxChars = 0;
+    }
+    else
+    {
+        long tmp;
+        if ( !params.ToLong(&tmp) )
+        {
+            wxLogDebug(_T("Invalid wxGridCellTextEditor parameter string '%s' ignored"), params.c_str());
+        }
+        else
+        {
+            m_maxChars = (size_t)tmp;
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellNumberEditor
+// ----------------------------------------------------------------------------
+
+wxGridCellNumberEditor::wxGridCellNumberEditor(int min, int max)
+{
+    m_min = min;
+    m_max = max;
+}
+
+void wxGridCellNumberEditor::Create(wxWindow* parent,
+                                    wxWindowID id,
+                                    wxEvtHandler* evtHandler)
+{
+    if ( HasRange() )
+    {
+        // create a spin ctrl
+        m_control = new wxSpinCtrl(parent, -1, wxEmptyString,
+                                   wxDefaultPosition, wxDefaultSize,
+                                   wxSP_ARROW_KEYS,
+                                   m_min, m_max);
+
+        wxGridCellEditor::Create(parent, id, evtHandler);
+    }
+    else
+    {
+        // just a text control
+        wxGridCellTextEditor::Create(parent, id, evtHandler);
+
+#if wxUSE_VALIDATORS
+        Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
+#endif // wxUSE_VALIDATORS
+    }
+}
+
+void wxGridCellNumberEditor::BeginEdit(int row, int col, wxGrid* grid)
+{
+    // first get the value
+    wxGridTableBase *table = grid->GetTable();
+    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
+    {
+        m_valueOld = table->GetValueAsLong(row, col);
+    }
+    else
+    {
+        wxString sValue = table->GetValue(row, col);
+        if (! sValue.ToLong(&m_valueOld))
+        {
+            wxFAIL_MSG( _T("this cell doesn't have numeric value") );
+            return;
+        }
+    }
+
+    if ( HasRange() )
+    {
+        Spin()->SetValue((int)m_valueOld);
+        Spin()->SetFocus();
+    }
+    else
+    {
+        DoBeginEdit(GetString());
+    }
+}
+
+bool wxGridCellNumberEditor::EndEdit(int row, int col,
+                                     wxGrid* grid)
+{
+    bool changed;
+    long value;
+
+    if ( HasRange() )
+    {
+        value = Spin()->GetValue();
+        changed = value != m_valueOld;
+    }
+    else
+    {
+        changed = Text()->GetValue().ToLong(&value) && (value != m_valueOld);
+    }
+
+    if ( changed )
+    {
+        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_NUMBER))
+            grid->GetTable()->SetValueAsLong(row, col, value);
+        else
+            grid->GetTable()->SetValue(row, col, wxString::Format(wxT("%ld"), value));
+    }
+
+    return changed;
+}
+
+void wxGridCellNumberEditor::Reset()
+{
+    if ( HasRange() )
+    {
+        Spin()->SetValue((int)m_valueOld);
+    }
+    else
+    {
+        DoReset(GetString());
+    }
+}
+
+bool wxGridCellNumberEditor::IsAcceptedKey(wxKeyEvent& event)
+{
+    if ( wxGridCellEditor::IsAcceptedKey(event) )
+    {
+        int keycode = event.GetKeyCode();
+        switch ( keycode )
+        {
+            case WXK_NUMPAD0:
+            case WXK_NUMPAD1:
+            case WXK_NUMPAD2:
+            case WXK_NUMPAD3:
+            case WXK_NUMPAD4:
+            case WXK_NUMPAD5:
+            case WXK_NUMPAD6:
+            case WXK_NUMPAD7:
+            case WXK_NUMPAD8:
+            case WXK_NUMPAD9:
+            case WXK_ADD:
+            case WXK_NUMPAD_ADD:
+            case WXK_SUBTRACT:
+            case WXK_NUMPAD_SUBTRACT:
+            case WXK_UP:
+            case WXK_DOWN:
+                return TRUE;
+
+            default:
+                if ( (keycode < 128) && isdigit(keycode) )
+                    return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+void wxGridCellNumberEditor::StartingKey(wxKeyEvent& event)
+{
+    if ( !HasRange() )
+    {
+        int keycode = (int) event.KeyCode();
+        if ( isdigit(keycode) || keycode == '+' || keycode == '-' )
+        {
+            wxGridCellTextEditor::StartingKey(event);
+
+            // skip Skip() below
+            return;
+        }
+    }
+
+    event.Skip();
+}
+
+void wxGridCellNumberEditor::SetParameters(const wxString& params)
+{
+    if ( !params )
+    {
+        // reset to default
+        m_min =
+        m_max = -1;
+    }
+    else
+    {
+        long tmp;
+        if ( params.BeforeFirst(_T(',')).ToLong(&tmp) )
+        {
+            m_min = (int)tmp;
+
+            if ( params.AfterFirst(_T(',')).ToLong(&tmp) )
+            {
+                m_max = (int)tmp;
+
+                // skip the error message below
+                return;
+            }
+        }
+
+        wxLogDebug(_T("Invalid wxGridCellNumberEditor parameter string '%s' ignored"), params.c_str());
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellFloatEditor
+// ----------------------------------------------------------------------------
+
+wxGridCellFloatEditor::wxGridCellFloatEditor(int width, int precision)
+{
+    m_width = width;
+    m_precision = precision;
+}
+
+void wxGridCellFloatEditor::Create(wxWindow* parent,
+                                   wxWindowID id,
+                                   wxEvtHandler* evtHandler)
+{
+    wxGridCellTextEditor::Create(parent, id, evtHandler);
+
+#if wxUSE_VALIDATORS
+    Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
+#endif // wxUSE_VALIDATORS
+}
+
+void wxGridCellFloatEditor::BeginEdit(int row, int col, wxGrid* grid)
+{
+    // first get the value
+    wxGridTableBase *table = grid->GetTable();
+    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
+    {
+        m_valueOld = table->GetValueAsDouble(row, col);
+    }
+    else
+    {
+        wxString sValue = table->GetValue(row, col);
+        if (! sValue.ToDouble(&m_valueOld))
+        {
+            wxFAIL_MSG( _T("this cell doesn't have float value") );
+            return;
+        }
+    }
+
+    DoBeginEdit(GetString());
+}
+
+bool wxGridCellFloatEditor::EndEdit(int row, int col,
+                                     wxGrid* grid)
+{
+    double value;
+    if ( Text()->GetValue().ToDouble(&value) && (value != m_valueOld) )
+    {
+        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_FLOAT))
+            grid->GetTable()->SetValueAsDouble(row, col, value);
+        else
+            grid->GetTable()->SetValue(row, col, wxString::Format(wxT("%f"), value));
+
+        return TRUE;
+    }
+    else
+    {
+        return FALSE;
+    }
+}
+
+void wxGridCellFloatEditor::Reset()
+{
+    DoReset(GetString());
+}
+
+void wxGridCellFloatEditor::StartingKey(wxKeyEvent& event)
+{
+    int keycode = (int)event.KeyCode();
+    if ( isdigit(keycode) ||
+         keycode == '+' || keycode == '-' || keycode == '.' )
+    {
+        wxGridCellTextEditor::StartingKey(event);
+
+        // skip Skip() below
+        return;
+    }
+
+    event.Skip();
+}
+
+void wxGridCellFloatEditor::SetParameters(const wxString& params)
+{
+    if ( !params )
+    {
+        // reset to default
+        m_width =
+        m_precision = -1;
+    }
+    else
+    {
+        long tmp;
+        if ( params.BeforeFirst(_T(',')).ToLong(&tmp) )
+        {
+            m_width = (int)tmp;
+
+            if ( params.AfterFirst(_T(',')).ToLong(&tmp) )
+            {
+                m_precision = (int)tmp;
+
+                // skip the error message below
+                return;
+            }
+        }
+
+        wxLogDebug(_T("Invalid wxGridCellFloatEditor parameter string '%s' ignored"), params.c_str());
+    }
+}
+
+wxString wxGridCellFloatEditor::GetString() const
+{
+    wxString fmt;
+    if ( m_width == -1 )
+    {
+        // default width/precision
+        fmt = _T("%g");
+    }
+    else if ( m_precision == -1 )
+    {
+        // default precision
+        fmt.Printf(_T("%%%d.g"), m_width);
+    }
+    else
+    {
+        fmt.Printf(_T("%%%d.%dg"), m_width, m_precision);
+    }
+
+    return wxString::Format(fmt, m_valueOld);
+}
+
+bool wxGridCellFloatEditor::IsAcceptedKey(wxKeyEvent& event)
+{
+    if ( wxGridCellEditor::IsAcceptedKey(event) )
+    {
+        int keycode = event.GetKeyCode();
+        switch ( keycode )
+        {
+            case WXK_NUMPAD0:
+            case WXK_NUMPAD1:
+            case WXK_NUMPAD2:
+            case WXK_NUMPAD3:
+            case WXK_NUMPAD4:
+            case WXK_NUMPAD5:
+            case WXK_NUMPAD6:
+            case WXK_NUMPAD7:
+            case WXK_NUMPAD8:
+            case WXK_NUMPAD9:
+            case WXK_ADD:
+            case WXK_NUMPAD_ADD:
+            case WXK_SUBTRACT:
+            case WXK_NUMPAD_SUBTRACT:
+            case WXK_DECIMAL:
+            case WXK_NUMPAD_DECIMAL:
+                return TRUE;
+
+            default:
+                // additionally accept 'e' as in '1e+6'
+                if ( (keycode < 128) &&
+                     (isdigit(keycode) || tolower(keycode) == 'e') )
+                    return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellBoolEditor
+// ----------------------------------------------------------------------------
+
+void wxGridCellBoolEditor::Create(wxWindow* parent,
+                                  wxWindowID id,
+                                  wxEvtHandler* evtHandler)
+{
+    m_control = new wxCheckBox(parent, id, wxEmptyString,
+                               wxDefaultPosition, wxDefaultSize,
+                               wxNO_BORDER);
+
+    wxGridCellEditor::Create(parent, id, evtHandler);
+}
+
+void wxGridCellBoolEditor::SetSize(const wxRect& r)
+{
+    bool resize = FALSE;
+    wxSize size = m_control->GetSize();
+    wxCoord minSize = wxMin(r.width, r.height);
+
+    // check if the checkbox is not too big/small for this cell
+    wxSize sizeBest = m_control->GetBestSize();
+    if ( !(size == sizeBest) )
+    {
+        // reset to default size if it had been made smaller
+        size = sizeBest;
+
+        resize = TRUE;
+    }
+
+    if ( size.x >= minSize || size.y >= minSize )
+    {
+        // leave 1 pixel margin
+        size.x = size.y = minSize - 2;
+
+        resize = TRUE;
+    }
+
+    if ( resize )
+    {
+        m_control->SetSize(size);
+    }
+
+    // position it in the centre of the rectangle (TODO: support alignment?)
+
+#if defined(__WXGTK__) || defined (__WXMOTIF__)
+    // the checkbox without label still has some space to the right in wxGTK,
+    // so shift it to the right
+    size.x -= 8;
+#elif defined(__WXMSW__)
+    // here too, but in other way
+    size.x += 1;
+    size.y -= 2;
+#endif
+
+    m_control->Move(r.x + r.width/2 - size.x/2, r.y + r.height/2 - size.y/2);
+}
+
+void wxGridCellBoolEditor::Show(bool show, wxGridCellAttr *attr)
+{
+    m_control->Show(show);
+
+    if ( show )
+    {
+        wxColour colBg = attr ? attr->GetBackgroundColour() : *wxLIGHT_GREY;
+        CBox()->SetBackgroundColour(colBg);
+    }
+}
+
+void wxGridCellBoolEditor::BeginEdit(int row, int col, wxGrid* grid)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    if (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
+        m_startValue = grid->GetTable()->GetValueAsBool(row, col);
+    else
+    {
+        wxString cellval( grid->GetTable()->GetValue(row, col) );
+        m_startValue = !( !cellval || (cellval == "0") );
+    }
+    CBox()->SetValue(m_startValue);
+    CBox()->SetFocus();
+}
+
+bool wxGridCellBoolEditor::EndEdit(int row, int col,
+                                   wxGrid* grid)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    bool changed = FALSE;
+    bool value = CBox()->GetValue();
+    if ( value != m_startValue )
+        changed = TRUE;
+
+    if ( changed )
+    {
+        if (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
+            grid->GetTable()->SetValueAsBool(row, col, value);
+        else
+            grid->GetTable()->SetValue(row, col, value ? _T("1") : wxEmptyString);
+    }
+
+    return changed;
+}
+
+void wxGridCellBoolEditor::Reset()
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    CBox()->SetValue(m_startValue);
+}
+
+void wxGridCellBoolEditor::StartingClick()
+{
+    CBox()->SetValue(!CBox()->GetValue());
+}
+
+bool wxGridCellBoolEditor::IsAcceptedKey(wxKeyEvent& event)
+{
+    if ( wxGridCellEditor::IsAcceptedKey(event) )
+    {
+        int keycode = event.GetKeyCode();
+        switch ( keycode )
+        {
+            case WXK_MULTIPLY:
+            case WXK_NUMPAD_MULTIPLY:
+            case WXK_ADD:
+            case WXK_NUMPAD_ADD:
+            case WXK_SUBTRACT:
+            case WXK_NUMPAD_SUBTRACT:
+            case WXK_SPACE:
+            case '+':
+            case '-':
+                return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellChoiceEditor
+// ----------------------------------------------------------------------------
+
+wxGridCellChoiceEditor::wxGridCellChoiceEditor(size_t count,
+                                               const wxString choices[],
+                                               bool allowOthers)
+                      : m_allowOthers(allowOthers)
+{
+    if ( count )
+    {
+        m_choices.Alloc(count);
+        for ( size_t n = 0; n < count; n++ )
+        {
+            m_choices.Add(choices[n]);
+        }
+    }
+}
+
+wxGridCellEditor *wxGridCellChoiceEditor::Clone() const
+{
+    wxGridCellChoiceEditor *editor = new wxGridCellChoiceEditor;
+    editor->m_allowOthers = m_allowOthers;
+    editor->m_choices = m_choices;
+
+    return editor;
+}
+
+void wxGridCellChoiceEditor::Create(wxWindow* parent,
+                                    wxWindowID id,
+                                    wxEvtHandler* evtHandler)
+{
+    size_t count = m_choices.GetCount();
+    wxString *choices = new wxString[count];
+    for ( size_t n = 0; n < count; n++ )
+    {
+        choices[n] = m_choices[n];
+    }
+
+    m_control = new wxComboBox(parent, id, wxEmptyString,
+                               wxDefaultPosition, wxDefaultSize,
+                               count, choices,
+                               m_allowOthers ? 0 : wxCB_READONLY);
+
+    delete [] choices;
+
+    wxGridCellEditor::Create(parent, id, evtHandler);
+}
+
+void wxGridCellChoiceEditor::PaintBackground(const wxRect& rectCell,
+                                             wxGridCellAttr * attr)
+{
+    // as we fill the entire client area, don't do anything here to minimize
+    // flicker
+
+    // TODO: It doesn't actually fill the client area since the height of a
+    // combo always defaults to the standard...  Until someone has time to
+    // figure out the right rectangle to paint, just do it the normal way...
+    wxGridCellEditor::PaintBackground(rectCell, attr);
+}
+
+void wxGridCellChoiceEditor::BeginEdit(int row, int col, wxGrid* grid)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    m_startValue = grid->GetTable()->GetValue(row, col);
+
+    Combo()->SetValue(m_startValue);
+    size_t count = m_choices.GetCount();
+    for (size_t i=0; i<count; i++)
+    {
+        if (m_startValue == m_choices[i])
+        {
+            Combo()->SetSelection(i);
+            break;
+        }
+    }
+    Combo()->SetInsertionPointEnd();
+    Combo()->SetFocus();
+}
+
+bool wxGridCellChoiceEditor::EndEdit(int row, int col,
+                                     wxGrid* grid)
+{
+    wxString value = Combo()->GetValue();
+    bool changed = value != m_startValue;
+
+    if ( changed )
+        grid->GetTable()->SetValue(row, col, value);
+
+    m_startValue = wxEmptyString;
+    Combo()->SetValue(m_startValue);
+
+    return changed;
+}
+
+void wxGridCellChoiceEditor::Reset()
+{
+    Combo()->SetValue(m_startValue);
+    Combo()->SetInsertionPointEnd();
+}
+
+void wxGridCellChoiceEditor::SetParameters(const wxString& params)
+{
+    if ( !params )
+    {
+        // what can we do?
+        return;
+    }
+
+    m_choices.Empty();
+
+    wxStringTokenizer tk(params, _T(','));
+    while ( tk.HasMoreTokens() )
+    {
+        m_choices.Add(tk.GetNextToken());
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellEditorEvtHandler
+// ----------------------------------------------------------------------------
+
+void wxGridCellEditorEvtHandler::OnKeyDown(wxKeyEvent& event)
+{
+    switch ( event.KeyCode() )
+    {
+        case WXK_ESCAPE:
+            m_editor->Reset();
+            m_grid->DisableCellEditControl();
+            break;
+
+        case WXK_TAB:
+            event.Skip( m_grid->ProcessEvent( event ) );
+            break;
+
+        case WXK_NUMPAD_ENTER:
+        case WXK_RETURN:
+            if (!m_grid->ProcessEvent(event))
+                m_editor->HandleReturn(event);
+            break;
+
+
+        default:
+            event.Skip();
+    }
+}
+
+void wxGridCellEditorEvtHandler::OnChar(wxKeyEvent& event)
+{
+    switch ( event.KeyCode() )
+    {
+        case WXK_ESCAPE:
+        case WXK_TAB:
+        case WXK_RETURN:
+        case WXK_NUMPAD_ENTER:
+            break;
+
+        default:
+            event.Skip();
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellWorker is an (almost) empty common base class for
+// wxGridCellRenderer and wxGridCellEditor managing ref counting
+// ----------------------------------------------------------------------------
+
+void wxGridCellWorker::SetParameters(const wxString& WXUNUSED(params))
+{
+    // nothing to do
+}
+
+wxGridCellWorker::~wxGridCellWorker()
+{
+}
+
+// ============================================================================
+// renderer classes
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxGridCellRenderer
+// ----------------------------------------------------------------------------
+
+void wxGridCellRenderer::Draw(wxGrid& grid,
+                              wxGridCellAttr& attr,
+                              wxDC& dc,
+                              const wxRect& rect,
+                              int WXUNUSED(row), int WXUNUSED(col),
+                              bool isSelected)
+{
+    dc.SetBackgroundMode( wxSOLID );
+
+    if ( isSelected )
+    {
+        dc.SetBrush( wxBrush(grid.GetSelectionBackground(), wxSOLID) );
+    }
+    else
+    {
+        dc.SetBrush( wxBrush(attr.GetBackgroundColour(), wxSOLID) );
+    }
+
+    dc.SetPen( *wxTRANSPARENT_PEN );
+    dc.DrawRectangle(rect);
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellStringRenderer
+// ----------------------------------------------------------------------------
+
+void wxGridCellStringRenderer::SetTextColoursAndFont(wxGrid& grid,
+                                                     wxGridCellAttr& attr,
+                                                     wxDC& dc,
+                                                     bool isSelected)
+{
+    dc.SetBackgroundMode( wxTRANSPARENT );
+
+    // TODO some special colours for attr.IsReadOnly() case?
+
+    if ( isSelected )
+    {
+        dc.SetTextBackground( grid.GetSelectionBackground() );
+        dc.SetTextForeground( grid.GetSelectionForeground() );
+    }
+    else
+    {
+        dc.SetTextBackground( attr.GetBackgroundColour() );
+        dc.SetTextForeground( attr.GetTextColour() );
+    }
+
+    dc.SetFont( attr.GetFont() );
+}
+
+wxSize wxGridCellStringRenderer::DoGetBestSize(wxGridCellAttr& attr,
+                                               wxDC& dc,
+                                               const wxString& text)
+{
+    wxCoord x = 0, y = 0, max_x = 0;
+    dc.SetFont(attr.GetFont());
+    wxStringTokenizer tk(text, _T('\n'));
+    while ( tk.HasMoreTokens() )
+    {
+        dc.GetTextExtent(tk.GetNextToken(), &x, &y);
+        max_x = wxMax(max_x, x);
+    }
+
+    y *= 1 + text.Freq(wxT('\n')); // multiply by the number of lines.
+
+    return wxSize(max_x, y);
+}
+
+wxSize wxGridCellStringRenderer::GetBestSize(wxGrid& grid,
+                                             wxGridCellAttr& attr,
+                                             wxDC& dc,
+                                             int row, int col)
+{
+    return DoGetBestSize(attr, dc, grid.GetCellValue(row, col));
+}
+
+void wxGridCellStringRenderer::Draw(wxGrid& grid,
+                                    wxGridCellAttr& attr,
+                                    wxDC& dc,
+                                    const wxRect& rectCell,
+                                    int row, int col,
+                                    bool isSelected)
+{
+    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
+
+    // now we only have to draw the text
+    SetTextColoursAndFont(grid, attr, dc, isSelected);
+
+    int hAlign, vAlign;
+    attr.GetAlignment(&hAlign, &vAlign);
+
+    wxRect rect = rectCell;
+    rect.Inflate(-1);
+
+    grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
+                           rect, hAlign, vAlign);
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellNumberRenderer
+// ----------------------------------------------------------------------------
+
+wxString wxGridCellNumberRenderer::GetString(wxGrid& grid, int row, int col)
+{
+    wxGridTableBase *table = grid.GetTable();
+    wxString text;
+    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
+    {
+        text.Printf(_T("%ld"), table->GetValueAsLong(row, col));
+    }
+    else
+    {
+        text = table->GetValue(row, col);
+    }
+
+    return text;
+}
+
+void wxGridCellNumberRenderer::Draw(wxGrid& grid,
+                                    wxGridCellAttr& attr,
+                                    wxDC& dc,
+                                    const wxRect& rectCell,
+                                    int row, int col,
+                                    bool isSelected)
+{
+    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
+
+    SetTextColoursAndFont(grid, attr, dc, isSelected);
+
+    // draw the text right aligned by default
+    int hAlign, vAlign;
+    attr.GetAlignment(&hAlign, &vAlign);
+    hAlign = wxALIGN_RIGHT;
+
+    wxRect rect = rectCell;
+    rect.Inflate(-1);
+
+    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
+}
+
+wxSize wxGridCellNumberRenderer::GetBestSize(wxGrid& grid,
+                                             wxGridCellAttr& attr,
+                                             wxDC& dc,
+                                             int row, int col)
+{
+    return DoGetBestSize(attr, dc, GetString(grid, row, col));
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellFloatRenderer
+// ----------------------------------------------------------------------------
+
+wxGridCellFloatRenderer::wxGridCellFloatRenderer(int width, int precision)
+{
+    SetWidth(width);
+    SetPrecision(precision);
+}
+
+wxGridCellRenderer *wxGridCellFloatRenderer::Clone() const
+{
+    wxGridCellFloatRenderer *renderer = new wxGridCellFloatRenderer;
+    renderer->m_width = m_width;
+    renderer->m_precision = m_precision;
+    renderer->m_format = m_format;
+
+    return renderer;
+}
+
+wxString wxGridCellFloatRenderer::GetString(wxGrid& grid, int row, int col)
+{
+    wxGridTableBase *table = grid.GetTable();
+
+    bool hasDouble;
+    double val;
+    wxString text;
+    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
+    {
+        val = table->GetValueAsDouble(row, col);
+        hasDouble = TRUE;
+    }
+    else
+    {
+        text = table->GetValue(row, col);
+        hasDouble = text.ToDouble(&val);
+    }
+
+    if ( hasDouble )
+    {
+        if ( !m_format )
+        {
+            if ( m_width == -1 )
+            {
+                // default width/precision
+                m_format = _T("%f");
+            }
+            else if ( m_precision == -1 )
+            {
+                // default precision
+                m_format.Printf(_T("%%%d.f"), m_width);
+            }
+            else
+            {
+                m_format.Printf(_T("%%%d.%df"), m_width, m_precision);
+            }
+        }
+
+        text.Printf(m_format, val);
+    }
+    //else: text already contains the string
+
+    return text;
+}
+
+void wxGridCellFloatRenderer::Draw(wxGrid& grid,
+                                   wxGridCellAttr& attr,
+                                   wxDC& dc,
+                                   const wxRect& rectCell,
+                                   int row, int col,
+                                   bool isSelected)
+{
+    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
+
+    SetTextColoursAndFont(grid, attr, dc, isSelected);
+
+    // draw the text right aligned by default
+    int hAlign, vAlign;
+    attr.GetAlignment(&hAlign, &vAlign);
+    hAlign = wxALIGN_RIGHT;
+
+    wxRect rect = rectCell;
+    rect.Inflate(-1);
+
+    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
+}
+
+wxSize wxGridCellFloatRenderer::GetBestSize(wxGrid& grid,
+                                            wxGridCellAttr& attr,
+                                            wxDC& dc,
+                                            int row, int col)
+{
+    return DoGetBestSize(attr, dc, GetString(grid, row, col));
+}
+
+void wxGridCellFloatRenderer::SetParameters(const wxString& params)
+{
+    bool ok = TRUE;
+
+    if ( !params )
+    {
+        // reset to defaults
+        SetWidth(-1);
+        SetPrecision(-1);
+    }
+    else
+    {
+        wxString tmp = params.BeforeFirst(_T(','));
+        if ( !!tmp )
+        {
+            long width;
+            if ( !tmp.ToLong(&width) )
+            {
+                ok = FALSE;
+            }
+            else
+            {
+                SetWidth((int)width);
+
+                tmp = params.AfterFirst(_T(','));
+                if ( !!tmp )
+                {
+                    long precision;
+                    if ( !tmp.ToLong(&precision) )
+                    {
+                        ok = FALSE;
+                    }
+                    else
+                    {
+                        SetPrecision((int)precision);
+                    }
+                }
+            }
+        }
+
+        if ( !ok )
+        {
+            wxLogDebug(_T("Invalid wxGridCellFloatRenderer parameter string '%s ignored"), params.c_str());
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellBoolRenderer
+// ----------------------------------------------------------------------------
+
+wxSize wxGridCellBoolRenderer::ms_sizeCheckMark;
+
+// FIXME these checkbox size calculations are really ugly...
+
+// between checkmark and box
+static const wxCoord wxGRID_CHECKMARK_MARGIN = 2;
+
+wxSize wxGridCellBoolRenderer::GetBestSize(wxGrid& grid,
+                                           wxGridCellAttr& WXUNUSED(attr),
+                                           wxDC& WXUNUSED(dc),
+                                           int WXUNUSED(row),
+                                           int WXUNUSED(col))
+{
+    // compute it only once (no locks for MT safeness in GUI thread...)
+    if ( !ms_sizeCheckMark.x )
+    {
+        // get checkbox size
+        wxCoord checkSize = 0;
+        wxCheckBox *checkbox = new wxCheckBox(&grid, -1, wxEmptyString);
+        wxSize size = checkbox->GetBestSize();
+        checkSize = size.y + 2*wxGRID_CHECKMARK_MARGIN;
+
+        // FIXME wxGTK::wxCheckBox::GetBestSize() gives "wrong" result
+#if defined(__WXGTK__) || defined(__WXMOTIF__)
+        checkSize -= size.y / 2;
+#endif
+
+        delete checkbox;
+
+        ms_sizeCheckMark.x = ms_sizeCheckMark.y = checkSize;
+    }
+
+    return ms_sizeCheckMark;
+}
+
+void wxGridCellBoolRenderer::Draw(wxGrid& grid,
+                                  wxGridCellAttr& attr,
+                                  wxDC& dc,
+                                  const wxRect& rect,
+                                  int row, int col,
+                                  bool isSelected)
+{
+    wxGridCellRenderer::Draw(grid, attr, dc, rect, row, col, isSelected);
+
+    // draw a check mark in the centre (ignoring alignment - TODO)
+    wxSize size = GetBestSize(grid, attr, dc, row, col);
+
+    // don't draw outside the cell
+    wxCoord minSize = wxMin(rect.width, rect.height);
+    if ( size.x >= minSize || size.y >= minSize )
+    {
+        // and even leave (at least) 1 pixel margin
+        size.x = size.y = minSize - 2;
+    }
+
+    // draw a border around checkmark
+    wxRect rectBorder;
+    rectBorder.x = rect.x + rect.width/2 - size.x/2;
+    rectBorder.y = rect.y + rect.height/2 - size.y/2;
+    rectBorder.width = size.x;
+    rectBorder.height = size.y;
+
+    bool value;
+    if ( grid.GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL) )
+        value = grid.GetTable()->GetValueAsBool(row, col);
+    else
+    {
+        wxString cellval( grid.GetTable()->GetValue(row, col) );
+        value = !( !cellval || (cellval == "0") );
+    }
+
+    if ( value )
+    {
+        wxRect rectMark = rectBorder;
+#ifdef __WXMSW__
+        // MSW DrawCheckMark() is weird (and should probably be changed...)
+        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN/2);
+        rectMark.x++;
+        rectMark.y++;
+#else // !MSW
+        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN);
+#endif // MSW/!MSW
+
+        dc.SetTextForeground(attr.GetTextColour());
+        dc.DrawCheckMark(rectMark);
+    }
+
+    dc.SetBrush(*wxTRANSPARENT_BRUSH);
+    dc.SetPen(wxPen(attr.GetTextColour(), 1, wxSOLID));
+    dc.DrawRectangle(rectBorder);
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellAttr
+// ----------------------------------------------------------------------------
+
+wxGridCellAttr *wxGridCellAttr::Clone() const
+{
+    wxGridCellAttr *attr = new wxGridCellAttr;
+    if ( HasTextColour() )
+        attr->SetTextColour(GetTextColour());
+    if ( HasBackgroundColour() )
+        attr->SetBackgroundColour(GetBackgroundColour());
+    if ( HasFont() )
+        attr->SetFont(GetFont());
+    if ( HasAlignment() )
+        attr->SetAlignment(m_hAlign, m_vAlign);
+
+    if ( m_renderer )
+    {
+        attr->SetRenderer(m_renderer);
+        m_renderer->IncRef();
+    }
+    if ( m_editor )
+    {
+        attr->SetEditor(m_editor);
+        m_editor->IncRef();
+    }
+
+    if ( IsReadOnly() )
+        attr->SetReadOnly();
+
+    attr->SetDefAttr(m_defGridAttr);
+
+    return attr;
+}
+
+const wxColour& wxGridCellAttr::GetTextColour() const
+{
+    if (HasTextColour())
+    {
+        return m_colText;
+    }
+    else if (m_defGridAttr != this)
+    {
+        return m_defGridAttr->GetTextColour();
+    }
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
+    }
+}
+
+
+const wxColour& wxGridCellAttr::GetBackgroundColour() const
+{
+    if (HasBackgroundColour())
+        return m_colBack;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetBackgroundColour();
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
+    }
+}
+
+
+const wxFont& wxGridCellAttr::GetFont() const
+{
+    if (HasFont())
+        return m_font;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetFont();
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullFont;
+    }
+}
+
+
+void wxGridCellAttr::GetAlignment(int *hAlign, int *vAlign) const
+{
+    if (HasAlignment())
+    {
+        if ( hAlign ) *hAlign = m_hAlign;
+        if ( vAlign ) *vAlign = m_vAlign;
+    }
+    else if (m_defGridAttr != this)
+        m_defGridAttr->GetAlignment(hAlign, vAlign);
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+    }
+}
+
+
+// GetRenderer and GetEditor use a slightly different decision path about
+// which attribute to use.  If a non-default attr object has one then it is
+// used, otherwise the default editor or renderer is fetched from the grid and
+// used.  It should be the default for the data type of the cell.  If it is
+// NULL (because the table has a type that the grid does not have in its
+// registry,) then the grid's default editor or renderer is used.
+
+wxGridCellRenderer* wxGridCellAttr::GetRenderer(wxGrid* grid, int row, int col) const
+{
+    wxGridCellRenderer* renderer = NULL;
+
+    if ( m_defGridAttr != this || grid == NULL )
+    {
+        renderer = m_renderer;      // use local attribute
+        if ( renderer )
+            renderer->IncRef();
+    }
+
+    if ( !renderer && grid )        // get renderer for the data type
+    {
+        // GetDefaultRendererForCell() will do IncRef() for us
+        renderer = grid->GetDefaultRendererForCell(row, col);
+    }
+
+    if ( !renderer )
+    {
+        // if we still don't have one then use the grid default
+        // (no need for IncRef() here neither)
+        renderer = m_defGridAttr->GetRenderer(NULL,0,0);
+    }
+
+    if ( !renderer)
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+    }
+
+    return renderer;
+}
+
+wxGridCellEditor* wxGridCellAttr::GetEditor(wxGrid* grid, int row, int col) const
+{
+    wxGridCellEditor* editor = NULL;
+
+    if ( m_defGridAttr != this || grid == NULL )
+    {
+        editor = m_editor;      // use local attribute
+        if ( editor )
+            editor->IncRef();
+    }
+
+    if ( !editor && grid )                   // get renderer for the data type
+        editor = grid->GetDefaultEditorForCell(row, col);
+
+    if ( !editor )
+        // if we still don't have one then use the grid default
+        editor = m_defGridAttr->GetEditor(NULL,0,0);
+
+    if ( !editor )
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+    }
+
+    return editor;
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellAttrData
+// ----------------------------------------------------------------------------
+
+void wxGridCellAttrData::SetAttr(wxGridCellAttr *attr, int row, int col)
+{
+    int n = FindIndex(row, col);
+    if ( n == wxNOT_FOUND )
+    {
+        // add the attribute
+        m_attrs.Add(new wxGridCellWithAttr(row, col, attr));
+    }
+    else
+    {
+        if ( attr )
+        {
+            // change the attribute
+            m_attrs[(size_t)n].attr = attr;
+        }
+        else
+        {
+            // remove this attribute
+            m_attrs.RemoveAt((size_t)n);
+        }
+    }
+}
+
+wxGridCellAttr *wxGridCellAttrData::GetAttr(int row, int col) const
+{
+    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+
+    int n = FindIndex(row, col);
+    if ( n != wxNOT_FOUND )
+    {
+        attr = m_attrs[(size_t)n].attr;
+        attr->IncRef();
+    }
+
+    return attr;
+}
+
+void wxGridCellAttrData::UpdateAttrRows( size_t pos, int numRows )
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        wxGridCellCoords& coords = m_attrs[n].coords;
+        wxCoord row = coords.GetRow();
+        if ((size_t)row >= pos)
+        {
+            if (numRows > 0)
+            {
+                // If rows inserted, include row counter where necessary
+                coords.SetRow(row + numRows);
+            }
+            else if (numRows < 0)
+            {
+                // If rows deleted ...
+                if ((size_t)row >= pos - numRows)
+                {
+                    // ...either decrement row counter (if row still exists)...
+                    coords.SetRow(row + numRows);
+                }
+                else
+                {
+                    // ...or remove the attribute
+                    m_attrs.RemoveAt((size_t)n);
+                    n--; count--;
+                }
+            }
+        }
+    }
+}
+
+void wxGridCellAttrData::UpdateAttrCols( size_t pos, int numCols )
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        wxGridCellCoords& coords = m_attrs[n].coords;
+        wxCoord col = coords.GetCol();
+        if ( (size_t)col >= pos )
+        {
+            if ( numCols > 0 )
+            {
+                // If rows inserted, include row counter where necessary
+                coords.SetCol(col + numCols);
+            }
+            else if (numCols < 0)
+            {
+                // If rows deleted ...
+                if ((size_t)col >= pos - numCols)
+                {
+                    // ...either decrement row counter (if row still exists)...
+                    coords.SetCol(col + numCols);
+                }
+                else
+                {
+                    // ...or remove the attribute
+                    m_attrs.RemoveAt((size_t)n);
+                    n--; count--;
+                }
+            }
+        }
+    }
+}
+
+int wxGridCellAttrData::FindIndex(int row, int col) const
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        const wxGridCellCoords& coords = m_attrs[n].coords;
+        if ( (coords.GetRow() == row) && (coords.GetCol() == col) )
+        {
+            return n;
+        }
+    }
+
+    return wxNOT_FOUND;
+}
+
+// ----------------------------------------------------------------------------
+// wxGridRowOrColAttrData
+// ----------------------------------------------------------------------------
+
+wxGridRowOrColAttrData::~wxGridRowOrColAttrData()
+{
+    size_t count = m_attrs.Count();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        m_attrs[n]->DecRef();
+    }
+}
+
+wxGridCellAttr *wxGridRowOrColAttrData::GetAttr(int rowOrCol) const
+{
+    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+
+    int n = m_rowsOrCols.Index(rowOrCol);
+    if ( n != wxNOT_FOUND )
+    {
+        attr = m_attrs[(size_t)n];
+        attr->IncRef();
+    }
+
+    return attr;
+}
+
+void wxGridRowOrColAttrData::SetAttr(wxGridCellAttr *attr, int rowOrCol)
+{
+    int i = m_rowsOrCols.Index(rowOrCol);
+    if ( i == wxNOT_FOUND )
+    {
+        // add the attribute
+        m_rowsOrCols.Add(rowOrCol);
+        m_attrs.Add(attr);
+    }
+    else
+    {
+        size_t n = (size_t)i;
+        if ( attr )
+        {
+            // change the attribute
+            m_attrs[n]->DecRef();
+            m_attrs[n] = attr;
+        }
+        else
+        {
+            // remove this attribute
+            m_attrs[n]->DecRef();
+            m_rowsOrCols.RemoveAt(n);
+            m_attrs.RemoveAt(n);
+        }
+    }
+}
+
+void wxGridRowOrColAttrData::UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols )
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        int & rowOrCol = m_rowsOrCols[n];
+        if ( (size_t)rowOrCol >= pos )
+        {
+            if ( numRowsOrCols > 0 )
+            {
+                // If rows inserted, include row counter where necessary
+                rowOrCol += numRowsOrCols;
+            }
+            else if ( numRowsOrCols < 0)
+            {
+                // If rows deleted, either decrement row counter (if row still exists)
+                if ((size_t)rowOrCol >= pos - numRowsOrCols)
+                    rowOrCol += numRowsOrCols;
+                else
+                {
+                    m_rowsOrCols.RemoveAt((size_t)n);
+                    m_attrs.RemoveAt((size_t)n);
+                    n--; count--;
+                }
+            }
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellAttrProvider
+// ----------------------------------------------------------------------------
+
+wxGridCellAttrProvider::wxGridCellAttrProvider()
+{
+    m_data = (wxGridCellAttrProviderData *)NULL;
+}
+
+wxGridCellAttrProvider::~wxGridCellAttrProvider()
+{
+    delete m_data;
+}
+
+void wxGridCellAttrProvider::InitData()
+{
+    m_data = new wxGridCellAttrProviderData;
+}
+
+wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col) const
+{
+    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+    if ( m_data )
+    {
+        // first look for the attribute of this specific cell
+        attr = m_data->m_cellAttrs.GetAttr(row, col);
+
+        if ( !attr )
+        {
+            // then look for the col attr (col attributes are more common than
+            // the row ones, hence they have priority)
+            attr = m_data->m_colAttrs.GetAttr(col);
+        }
+
+        if ( !attr )
+        {
+            // finally try the row attributes
+            attr = m_data->m_rowAttrs.GetAttr(row);
+        }
+    }
+
+    return attr;
+}
+
+void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
+                                     int row, int col)
+{
+    if ( !m_data )
+        InitData();
+
+    m_data->m_cellAttrs.SetAttr(attr, row, col);
+}
+
+void wxGridCellAttrProvider::SetRowAttr(wxGridCellAttr *attr, int row)
+{
+    if ( !m_data )
+        InitData();
+
+    m_data->m_rowAttrs.SetAttr(attr, row);
+}
+
+void wxGridCellAttrProvider::SetColAttr(wxGridCellAttr *attr, int col)
+{
+    if ( !m_data )
+        InitData();
+
+    m_data->m_colAttrs.SetAttr(attr, col);
+}
+
+void wxGridCellAttrProvider::UpdateAttrRows( size_t pos, int numRows )
+{
+    if ( m_data )
+    {
+        m_data->m_cellAttrs.UpdateAttrRows( pos, numRows );
+
+        m_data->m_rowAttrs.UpdateAttrRowsOrCols( pos, numRows );
+    }
+}
+
+void wxGridCellAttrProvider::UpdateAttrCols( size_t pos, int numCols )
+{
+    if ( m_data )
+    {
+        m_data->m_cellAttrs.UpdateAttrCols( pos, numCols );
+
+        m_data->m_colAttrs.UpdateAttrRowsOrCols( pos, numCols );
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridTypeRegistry
+// ----------------------------------------------------------------------------
+
+wxGridTypeRegistry::~wxGridTypeRegistry()
+{
+    size_t count = m_typeinfo.Count();
+    for ( size_t i = 0; i < count; i++ )
+        delete m_typeinfo[i];
+}
+
+
+void wxGridTypeRegistry::RegisterDataType(const wxString& typeName,
+                                          wxGridCellRenderer* renderer,
+                                          wxGridCellEditor* editor)
+{
+    wxGridDataTypeInfo* info = new wxGridDataTypeInfo(typeName, renderer, editor);
+
+    // is it already registered?
+    int loc = FindRegisteredDataType(typeName);
+    if ( loc != wxNOT_FOUND )
+    {
+        delete m_typeinfo[loc];
+        m_typeinfo[loc] = info;
+    }
+    else
+    {
+        m_typeinfo.Add(info);
+    }
+}
+
+int wxGridTypeRegistry::FindRegisteredDataType(const wxString& typeName)
+{
+    size_t count = m_typeinfo.GetCount();
+    for ( size_t i = 0; i < count; i++ )
+    {
+        if ( typeName == m_typeinfo[i]->m_typeName )
+        {
+            return i;
+        }
+    }
+
+    return wxNOT_FOUND;
+}
+
+int wxGridTypeRegistry::FindDataType(const wxString& typeName)
+{
+    int index = FindRegisteredDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        // check whether this is one of the standard ones, in which case
+        // register it "on the fly"
+        if ( typeName == wxGRID_VALUE_STRING )
+        {
+            RegisterDataType(wxGRID_VALUE_STRING,
+                             new wxGridCellStringRenderer,
+                             new wxGridCellTextEditor);
+        }
+        else if ( typeName == wxGRID_VALUE_BOOL )
+        {
+            RegisterDataType(wxGRID_VALUE_BOOL,
+                             new wxGridCellBoolRenderer,
+                             new wxGridCellBoolEditor);
+        }
+        else if ( typeName == wxGRID_VALUE_NUMBER )
+        {
+            RegisterDataType(wxGRID_VALUE_NUMBER,
+                             new wxGridCellNumberRenderer,
+                             new wxGridCellNumberEditor);
+        }
+        else if ( typeName == wxGRID_VALUE_FLOAT )
+        {
+            RegisterDataType(wxGRID_VALUE_FLOAT,
+                             new wxGridCellFloatRenderer,
+                             new wxGridCellFloatEditor);
+        }
+        else if ( typeName == wxGRID_VALUE_CHOICE )
+        {
+            RegisterDataType(wxGRID_VALUE_CHOICE,
+                             new wxGridCellStringRenderer,
+                             new wxGridCellChoiceEditor);
+        }
+        else
+        {
+            return wxNOT_FOUND;
+        }
+
+        // we get here only if just added the entry for this type, so return
+        // the last index
+        index = m_typeinfo.GetCount() - 1;
+    }
+
+    return index;
+}
+
+int wxGridTypeRegistry::FindOrCloneDataType(const wxString& typeName)
+{
+    int index = FindDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        // the first part of the typename is the "real" type, anything after ':'
+        // are the parameters for the renderer
+        index = FindDataType(typeName.BeforeFirst(_T(':')));
+        if ( index == wxNOT_FOUND )
+        {
+            return wxNOT_FOUND;
+        }
+
+        wxGridCellRenderer *renderer = GetRenderer(index);
+        wxGridCellRenderer *rendererOld = renderer;
+        renderer = renderer->Clone();
+        rendererOld->DecRef();
+
+        wxGridCellEditor *editor = GetEditor(index);
+        wxGridCellEditor *editorOld = editor;
+        editor = editor->Clone();
+        editorOld->DecRef();
+
+        // do it even if there are no parameters to reset them to defaults
+        wxString params = typeName.AfterFirst(_T(':'));
+        renderer->SetParameters(params);
+        editor->SetParameters(params);
+
+        // register the new typename
+        RegisterDataType(typeName, renderer, editor);
+
+        // we just registered it, it's the last one
+        index = m_typeinfo.GetCount() - 1;
+    }
+
+    return index;
+}
+
+wxGridCellRenderer* wxGridTypeRegistry::GetRenderer(int index)
+{
+    wxGridCellRenderer* renderer = m_typeinfo[index]->m_renderer;
+       if (renderer)
+               renderer->IncRef();
+    return renderer;
+}
+
+wxGridCellEditor* wxGridTypeRegistry::GetEditor(int index)
+{
+    wxGridCellEditor* editor = m_typeinfo[index]->m_editor;
+       if (editor)
+               editor->IncRef();
+    return editor;
+}
+
+// ----------------------------------------------------------------------------
+// wxGridTableBase
+// ----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS( wxGridTableBase, wxObject )
+
+
+wxGridTableBase::wxGridTableBase()
+{
+    m_view = (wxGrid *) NULL;
+    m_attrProvider = (wxGridCellAttrProvider *) NULL;
+}
+
+wxGridTableBase::~wxGridTableBase()
+{
+    delete m_attrProvider;
+}
+
+void wxGridTableBase::SetAttrProvider(wxGridCellAttrProvider *attrProvider)
+{
+    delete m_attrProvider;
+    m_attrProvider = attrProvider;
+}
+
+bool wxGridTableBase::CanHaveAttributes()
+{
+    if ( ! GetAttrProvider() )
+    {
+        // use the default attr provider by default
+        SetAttrProvider(new wxGridCellAttrProvider);
+    }
+    return TRUE;
+}
+
+wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col)
+{
+    if ( m_attrProvider )
+        return m_attrProvider->GetAttr(row, col);
+    else
+        return (wxGridCellAttr *)NULL;
+}
+
+void wxGridTableBase::SetAttr(wxGridCellAttr* attr, int row, int col)
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->SetAttr(attr, row, col);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
+    }
+}
+
+void wxGridTableBase::SetRowAttr(wxGridCellAttr *attr, int row)
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->SetRowAttr(attr, row);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
+    }
+}
+
+void wxGridTableBase::SetColAttr(wxGridCellAttr *attr, int col)
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->SetColAttr(attr, col);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
+    }
+}
+
+bool wxGridTableBase::InsertRows( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numRows) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function InsertRows\nbut your derived table class does not override this function") );
+
+    return FALSE;
+}
+
+bool wxGridTableBase::AppendRows( size_t WXUNUSED(numRows) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function AppendRows\nbut your derived table class does not override this function"));
+
+    return FALSE;
+}
+
+bool wxGridTableBase::DeleteRows( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numRows) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function DeleteRows\nbut your derived table class does not override this function"));
+
+    return FALSE;
+}
+
+bool wxGridTableBase::InsertCols( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numCols) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function InsertCols\nbut your derived table class does not override this function"));
+
+    return FALSE;
+}
+
+bool wxGridTableBase::AppendCols( size_t WXUNUSED(numCols) )
+{
+    wxFAIL_MSG(wxT("Called grid table class function AppendCols\nbut your derived table class does not override this function"));
+
+    return FALSE;
+}
+
+bool wxGridTableBase::DeleteCols( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numCols) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function DeleteCols\nbut your derived table class does not override this function"));
+
+    return FALSE;
+}
+
+
+wxString wxGridTableBase::GetRowLabelValue( int row )
+{
+    wxString s;
+    s << row + 1; // RD: Starting the rows at zero confuses users, no matter
+                  //     how much it makes sense to us geeks.
+    return s;
+}
+
+wxString wxGridTableBase::GetColLabelValue( int col )
+{
+    // default col labels are:
+    //   cols 0 to 25   : A-Z
+    //   cols 26 to 675 : AA-ZZ
+    //   etc.
+
+    wxString s;
+    unsigned int i, n;
+    for ( n = 1; ; n++ )
+    {
+        s += (_T('A') + (wxChar)( col%26 ));
+        col = col/26 - 1;
+        if ( col < 0 ) break;
+    }
+
+    // reverse the string...
+    wxString s2;
+    for ( i = 0;  i < n;  i++ )
+    {
+        s2 += s[n-i-1];
+    }
+
+    return s2;
+}
+
+
+wxString wxGridTableBase::GetTypeName( int WXUNUSED(row), int WXUNUSED(col) )
+{
+    return wxGRID_VALUE_STRING;
+}
+
+bool wxGridTableBase::CanGetValueAs( int WXUNUSED(row), int WXUNUSED(col),
+                                     const wxString& typeName )
+{
+    return typeName == wxGRID_VALUE_STRING;
+}
+
+bool wxGridTableBase::CanSetValueAs( int row, int col, const wxString& typeName )
+{
+    return CanGetValueAs(row, col, typeName);
+}
+
+long wxGridTableBase::GetValueAsLong( int WXUNUSED(row), int WXUNUSED(col) )
+{
+    return 0;
+}
+
+double wxGridTableBase::GetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col) )
+{
+    return 0.0;
+}
+
+bool wxGridTableBase::GetValueAsBool( int WXUNUSED(row), int WXUNUSED(col) )
+{
+    return FALSE;
+}
+
+void wxGridTableBase::SetValueAsLong( int WXUNUSED(row), int WXUNUSED(col),
+                                      long WXUNUSED(value) )
+{
+}
+
+void wxGridTableBase::SetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col),
+                                        double WXUNUSED(value) )
+{
+}
+
+void wxGridTableBase::SetValueAsBool( int WXUNUSED(row), int WXUNUSED(col),
+                                      bool WXUNUSED(value) )
+{
+}
+
+
+void* wxGridTableBase::GetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
+                                         const wxString& WXUNUSED(typeName) )
+{
+    return NULL;
+}
+
+void  wxGridTableBase::SetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
+                                         const wxString& WXUNUSED(typeName),
+                                         void* WXUNUSED(value) )
+{
+}
+
+//////////////////////////////////////////////////////////////////////
+//
+// Message class for the grid table to send requests and notifications
+// to the grid view
+//
+
+wxGridTableMessage::wxGridTableMessage()
+{
+    m_table = (wxGridTableBase *) NULL;
+    m_id = -1;
+    m_comInt1 = -1;
     m_comInt2 = -1;
 }
 
@@ -473,12 +2722,12 @@ wxGridStringTable::~wxGridStringTable()
 {
 }
 
-long wxGridStringTable::GetNumberRows()
+int wxGridStringTable::GetNumberRows()
 {
     return m_data.GetCount();
 }
 
-long wxGridStringTable::GetNumberCols()
+int wxGridStringTable::GetNumberCols()
 {
     if ( m_data.GetCount() > 0 )
         return m_data[0].GetCount();
@@ -488,26 +2737,28 @@ long wxGridStringTable::GetNumberCols()
 
 wxString wxGridStringTable::GetValue( int row, int col )
 {
-    // TODO: bounds checking
-    //
+    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
+                  _T("invalid row or column index in wxGridStringTable") );
+
     return m_data[row][col];
 }
 
-void wxGridStringTable::SetValue( int row, int col, const wxString& s )
+void wxGridStringTable::SetValue( int row, int col, const wxString& value )
 {
-    // TODO: bounds checking
-    //
-    m_data[row][col] = s;
+    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
+                  _T("invalid row or column index in wxGridStringTable") );
+
+    m_data[row][col] = value;
 }
 
 bool wxGridStringTable::IsEmptyCell( int row, int col )
 {
-    // TODO: bounds checking
-    //
+    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
+                  _T("invalid row or column index in wxGridStringTable") );
+
     return (m_data[row][col] == wxEmptyString);
 }
 
-
 void wxGridStringTable::Clear()
 {
     int row, col;
@@ -534,7 +2785,8 @@ bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
     size_t row, col;
 
     size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
     if ( pos >= curNumRows )
     {
@@ -552,7 +2804,6 @@ bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
     {
         m_data.Insert( sa, row );
     }
-
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -571,7 +2822,8 @@ bool wxGridStringTable::AppendRows( size_t numRows )
     size_t row, col;
 
     size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
     wxArrayString sa;
     if ( curNumCols > 0 )
@@ -609,10 +2861,9 @@ bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
     if ( pos >= curNumRows )
     {
         wxString errmsg;
-        errmsg.Printf("Called wxGridStringTable::DeleteRows(pos=%d, N=%d)\n"
-                      "Pos value is invalid for present table with %d rows",
+        errmsg.Printf(wxT("Called wxGridStringTable::DeleteRows(pos=%d, N=%d)\nPos value is invalid for present table with %d rows"),
                       pos, numRows, curNumRows );
-        wxFAIL_MSG( wxT(errmsg) );
+        wxFAIL_MSG( errmsg );
         return FALSE;
     }
 
@@ -632,7 +2883,6 @@ bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
             m_data.Remove( pos );
         }
     }
-
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -651,7 +2901,8 @@ bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
     size_t row, col;
 
     size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
     if ( pos >= curNumCols )
     {
@@ -665,7 +2916,6 @@ bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
             m_data[row].Insert( wxEmptyString, col );
         }
     }
-
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -684,14 +2934,15 @@ bool wxGridStringTable::AppendCols( size_t numCols )
     size_t row, n;
 
     size_t curNumRows = m_data.GetCount();
+#if 0
     if ( !curNumRows )
     {
         // TODO: something better than this ?
         //
-        wxFAIL_MSG( wxT("Unable to append cols to a grid table with no rows.\n"
-                        "Call AppendRows() first") );
+        wxFAIL_MSG( wxT("Unable to append cols to a grid table with no rows.\nCall AppendRows() first") );
         return FALSE;
     }
+#endif
 
     for ( row = 0;  row < curNumRows;  row++ )
     {
@@ -718,15 +2969,15 @@ bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
     size_t row, n;
 
     size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
     if ( pos >= curNumCols )
     {
         wxString errmsg;
-        errmsg.Printf( "Called wxGridStringTable::DeleteCols(pos=%d, N=%d)...\n"
-                        "Pos value is invalid for present table with %d cols",
+        errmsg.Printf( wxT("Called wxGridStringTable::DeleteCols(pos=%d, N=%d)...\nPos value is invalid for present table with %d cols"),
                         pos, numCols, curNumCols );
-        wxFAIL_MSG( wxT( errmsg ) );
+        wxFAIL_MSG( errmsg );
         return FALSE;
     }
 
@@ -749,7 +3000,6 @@ bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
             }
         }
     }
-
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -823,116 +3073,7 @@ void wxGridStringTable::SetColLabelValue( int col, const wxString& value )
 
 
 
-
 //////////////////////////////////////////////////////////////////////
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridTextCtrl, wxTextCtrl )
-
-BEGIN_EVENT_TABLE( wxGridTextCtrl, wxTextCtrl )
-    EVT_KEY_DOWN( wxGridTextCtrl::OnKeyDown )
-END_EVENT_TABLE()
-
-
-wxGridTextCtrl::wxGridTextCtrl( wxWindow *par,
-                                wxGrid *grid,
-                                bool isCellControl,
-                                wxWindowID id,
-                                const wxString& value,
-                                const wxPoint& pos,
-                                const wxSize& size,
-                                long style )
-        : wxTextCtrl( par, id, value, pos, size, style )
-{
-    m_grid = grid;
-    m_isCellControl = isCellControl;
-}
-
-
-void wxGridTextCtrl::OnKeyDown( wxKeyEvent& event )
-{
-    switch ( event.KeyCode() )
-    {
-        case WXK_ESCAPE:
-            m_grid->SetEditControlValue( startValue );
-            SetInsertionPointEnd();
-            break;
-
-        case WXK_UP:
-        case WXK_DOWN:
-        case WXK_LEFT:
-        case WXK_RIGHT:
-        case WXK_PRIOR:
-        case WXK_NEXT:
-        case WXK_SPACE:
-            if ( m_isCellControl )
-            {
-                // send the event to the parent grid, skipping the
-                // event if nothing happens
-                //
-                event.Skip( m_grid->ProcessEvent( event ) );
-            }
-            else
-            {
-                // default text control response within the top edit
-                // control
-                //
-                event.Skip();
-            }
-            break;
-
-        case WXK_RETURN:
-            if ( m_isCellControl )
-            {
-                if ( !m_grid->ProcessEvent( event ) )
-                {
-#if defined(__WXMOTIF__) || defined(__WXGTK__)
-                    // wxMotif needs a little extra help...
-                    //
-                    int pos = GetInsertionPoint();
-                    wxString s( GetValue() );
-                    s = s.Left(pos) + "\n" + s.Mid(pos);
-                    SetValue(s);
-                    SetInsertionPoint( pos );
-#else
-                    // the other ports can handle a Return key press
-                    //
-                    event.Skip();
-#endif
-                }
-            }
-            break;
-
-        case WXK_HOME:
-        case WXK_END:
-            if ( m_isCellControl )
-            {
-                // send the event to the parent grid, skipping the
-                // event if nothing happens
-                //
-                event.Skip( m_grid->ProcessEvent( event ) );
-            }
-            else
-            {
-                // default text control response within the top edit
-                // control
-                //
-                event.Skip();
-            }
-            break;
-
-        default:
-            event.Skip();
-    }
-}
-
-void wxGridTextCtrl::SetStartValue( const wxString& s )
-{
-    startValue = s;
-    wxTextCtrl::SetValue(s);
-}
-
-
-
 //////////////////////////////////////////////////////////////////////
 
 IMPLEMENT_DYNAMIC_CLASS( wxGridRowLabelWindow, wxWindow )
@@ -941,17 +3082,18 @@ BEGIN_EVENT_TABLE( wxGridRowLabelWindow, wxWindow )
     EVT_PAINT( wxGridRowLabelWindow::OnPaint )
     EVT_MOUSE_EVENTS( wxGridRowLabelWindow::OnMouseEvent )
     EVT_KEY_DOWN( wxGridRowLabelWindow::OnKeyDown )
+    EVT_KEY_UP( wxGridRowLabelWindow::OnKeyUp )
 END_EVENT_TABLE()
 
 wxGridRowLabelWindow::wxGridRowLabelWindow( wxGrid *parent,
                                             wxWindowID id,
                                             const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size )
+  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
 {
     m_owner = parent;
 }
 
-void wxGridRowLabelWindow::OnPaint( wxPaintEvent &event )
+void wxGridRowLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
     wxPaintDC dc(this);
 
@@ -984,6 +3126,11 @@ void wxGridRowLabelWindow::OnKeyDown( wxKeyEvent& event )
     if ( !m_owner->ProcessEvent( event ) ) event.Skip();
 }
 
+void wxGridRowLabelWindow::OnKeyUp( wxKeyEvent& event )
+{
+    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
+}
+
 
 
 //////////////////////////////////////////////////////////////////////
@@ -994,17 +3141,18 @@ BEGIN_EVENT_TABLE( wxGridColLabelWindow, wxWindow )
     EVT_PAINT( wxGridColLabelWindow::OnPaint )
     EVT_MOUSE_EVENTS( wxGridColLabelWindow::OnMouseEvent )
     EVT_KEY_DOWN( wxGridColLabelWindow::OnKeyDown )
+    EVT_KEY_UP( wxGridColLabelWindow::OnKeyUp )
 END_EVENT_TABLE()
 
 wxGridColLabelWindow::wxGridColLabelWindow( wxGrid *parent,
                                             wxWindowID id,
                                             const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size )
+  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
 {
     m_owner = parent;
 }
 
-void wxGridColLabelWindow::OnPaint( wxPaintEvent &event )
+void wxGridColLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
     wxPaintDC dc(this);
 
@@ -1037,6 +3185,11 @@ void wxGridColLabelWindow::OnKeyDown( wxKeyEvent& event )
     if ( !m_owner->ProcessEvent( event ) ) event.Skip();
 }
 
+void wxGridColLabelWindow::OnKeyUp( wxKeyEvent& event )
+{
+    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
+}
+
 
 
 //////////////////////////////////////////////////////////////////////
@@ -1047,12 +3200,13 @@ BEGIN_EVENT_TABLE( wxGridCornerLabelWindow, wxWindow )
     EVT_MOUSE_EVENTS( wxGridCornerLabelWindow::OnMouseEvent )
     EVT_PAINT( wxGridCornerLabelWindow::OnPaint)
     EVT_KEY_DOWN( wxGridCornerLabelWindow::OnKeyDown )
+    EVT_KEY_UP( wxGridCornerLabelWindow::OnKeyUp )
 END_EVENT_TABLE()
 
 wxGridCornerLabelWindow::wxGridCornerLabelWindow( wxGrid *parent,
                                                   wxWindowID id,
                                                   const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size )
+  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
 {
     m_owner = parent;
 }
@@ -1089,6 +3243,11 @@ void wxGridCornerLabelWindow::OnKeyDown( wxKeyEvent& event )
     if ( !m_owner->ProcessEvent( event ) ) event.Skip();
 }
 
+void wxGridCornerLabelWindow::OnKeyUp( wxKeyEvent& event )
+{
+    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
+}
+
 
 
 //////////////////////////////////////////////////////////////////////
@@ -1099,18 +3258,19 @@ BEGIN_EVENT_TABLE( wxGridWindow, wxPanel )
     EVT_PAINT( wxGridWindow::OnPaint )
     EVT_MOUSE_EVENTS( wxGridWindow::OnMouseEvent )
     EVT_KEY_DOWN( wxGridWindow::OnKeyDown )
+    EVT_KEY_UP( wxGridWindow::OnKeyUp )
+    EVT_ERASE_BACKGROUND( wxGridWindow::OnEraseBackground )
 END_EVENT_TABLE()
 
 wxGridWindow::wxGridWindow( wxGrid *parent,
                             wxGridRowLabelWindow *rowLblWin,
                             wxGridColLabelWindow *colLblWin,
                             wxWindowID id, const wxPoint &pos, const wxSize &size )
-        : wxPanel( parent, id, pos, size, 0, "grid window" )
+        : wxPanel( parent, id, pos, size, wxWANTS_CHARS, "grid window" )
 {
     m_owner = parent;
     m_rowLabelWin = rowLblWin;
     m_colLabelWin = colLblWin;
-
     SetBackgroundColour( "WHITE" );
 }
 
@@ -1130,6 +3290,8 @@ void wxGridWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 #if WXGRID_DRAW_LINES
     m_owner->DrawAllGridLines( dc, reg );
 #endif
+    m_owner->DrawGridSpace( dc );
+    m_owner->DrawHighlight( dc );
 }
 
 
@@ -1147,7 +3309,7 @@ void wxGridWindow::OnMouseEvent( wxMouseEvent& event )
 }
 
 
-// This seems to be required for wxMotif otherwise the mouse
+// This seems to be required for wxMotif/wxGTK otherwise the mouse
 // cursor must be in the cell edit control to get key events
 //
 void wxGridWindow::OnKeyDown( wxKeyEvent& event )
@@ -1155,16 +3317,27 @@ void wxGridWindow::OnKeyDown( wxKeyEvent& event )
     if ( !m_owner->ProcessEvent( event ) ) event.Skip();
 }
 
+void wxGridWindow::OnKeyUp( wxKeyEvent& event )
+{
+    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
+}
+
+void wxGridWindow::OnEraseBackground( wxEraseEvent& WXUNUSED(event) )
+{
+}
 
 
 //////////////////////////////////////////////////////////////////////
 
+
 IMPLEMENT_DYNAMIC_CLASS( wxGrid, wxScrolledWindow )
 
 BEGIN_EVENT_TABLE( wxGrid, wxScrolledWindow )
     EVT_PAINT( wxGrid::OnPaint )
     EVT_SIZE( wxGrid::OnSize )
     EVT_KEY_DOWN( wxGrid::OnKeyDown )
+    EVT_KEY_UP( wxGrid::OnKeyUp )
+    EVT_ERASE_BACKGROUND( wxGrid::OnEraseBackground )
 END_EVENT_TABLE()
 
 wxGrid::wxGrid( wxWindow *parent,
@@ -1173,7 +3346,9 @@ wxGrid::wxGrid( wxWindow *parent,
                  const wxSize& size,
                  long style,
                  const wxString& name )
-  : wxScrolledWindow( parent, id, pos, size, style, name )
+  : wxScrolledWindow( parent, id, pos, size, (style | wxWANTS_CHARS), name ),
+    m_colMinWidths(GRID_HASH_SIZE),
+    m_rowMinHeights(GRID_HASH_SIZE)
 {
     Create();
 }
@@ -1181,7 +3356,22 @@ wxGrid::wxGrid( wxWindow *parent,
 
 wxGrid::~wxGrid()
 {
-    delete m_table;
+    ClearAttrCache();
+    wxSafeDecRef(m_defaultCellAttr);
+
+#ifdef DEBUG_ATTR_CACHE
+    size_t total = gs_nAttrCacheHits + gs_nAttrCacheMisses;
+    wxPrintf(_T("wxGrid attribute cache statistics: "
+                "total: %u, hits: %u (%u%%)\n"),
+             total, gs_nAttrCacheHits,
+             total ? (gs_nAttrCacheHits*100) / total : 0);
+#endif
+
+    if (m_ownTable)
+        delete m_table;
+
+    delete m_typeRegistry;
+    delete m_selection;
 }
 
 
@@ -1192,10 +3382,25 @@ wxGrid::~wxGrid()
 void wxGrid::Create()
 {
     m_created = FALSE;    // set to TRUE by CreateGrid
-    m_displayed = FALSE;  // set to TRUE by OnPaint
 
     m_table        = (wxGridTableBase *) NULL;
-    m_cellEditCtrl = (wxWindow *) NULL;
+    m_ownTable     = FALSE;
+
+    m_cellEditCtrlEnabled = FALSE;
+
+    m_defaultCellAttr = new wxGridCellAttr;
+    m_defaultCellAttr->SetDefAttr(m_defaultCellAttr);
+
+    // Set default cell attributes
+    m_defaultCellAttr->SetFont(GetFont());
+    m_defaultCellAttr->SetAlignment(wxALIGN_LEFT, wxALIGN_TOP);
+    m_defaultCellAttr->SetTextColour(
+        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT));
+    m_defaultCellAttr->SetBackgroundColour(
+        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+    m_defaultCellAttr->SetRenderer(new wxGridCellStringRenderer);
+    m_defaultCellAttr->SetEditor(new wxGridCellTextEditor);
+
 
     m_numRows = 0;
     m_numCols = 0;
@@ -1204,6 +3409,10 @@ void wxGrid::Create()
     m_rowLabelWidth = WXGRID_DEFAULT_ROW_LABEL_WIDTH;
     m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
 
+    // create the type registry
+    m_typeRegistry = new wxGridTypeRegistry;
+    m_selection = 0;
+    // subwindow components that make up the wxGrid
     m_cornerLabelWin = new wxGridCornerLabelWindow( this,
                                                     -1,
                                                     wxDefaultPosition,
@@ -1230,20 +3439,60 @@ void wxGrid::Create()
 }
 
 
-bool wxGrid::CreateGrid( int numRows, int numCols )
+bool wxGrid::CreateGrid( int numRows, int numCols,
+                         wxGrid::wxGridSelectionModes selmode )
+{
+    wxCHECK_MSG( !m_created,
+                 FALSE,
+                 wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
+
+    m_numRows = numRows;
+    m_numCols = numCols;
+
+    m_table = new wxGridStringTable( m_numRows, m_numCols );
+    m_table->SetView( this );
+    m_ownTable = TRUE;
+    m_selection = new wxGridSelection( this, selmode );
+    Init();
+    m_created = TRUE;
+
+    return m_created;
+}
+
+void wxGrid::SetSelectionMode(wxGrid::wxGridSelectionModes selmode)
+{
+    if ( !m_created )
+    {
+        wxFAIL_MSG( wxT("Called wxGrid::SetSelectionMode() before calling CreateGrid()") );
+    }
+    else
+        m_selection->SetSelectionMode( selmode );
+}
+
+bool wxGrid::SetTable( wxGridTableBase *table, bool takeOwnership,
+                       wxGrid::wxGridSelectionModes selmode )
 {
     if ( m_created )
     {
-        wxFAIL_MSG( wxT("wxGrid::CreateGrid called more than once") );
+        // RD: Actually, this should probably be allowed.  I think it would be
+        // nice to be able to switch multiple Tables in and out of a single
+        // View at runtime.  Is there anything in the implmentation that would
+        // prevent this?
+
+        // At least, you now have to cope with m_selection
+        wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
         return FALSE;
     }
     else
     {
-        m_numRows = numRows;
-        m_numCols = numCols;
+        m_numRows = table->GetNumberRows();
+        m_numCols = table->GetNumberCols();
 
-        m_table = new wxGridStringTable( m_numRows, m_numCols );
+        m_table = table;
         m_table->SetView( this );
+        if (takeOwnership)
+            m_ownTable = TRUE;
+        m_selection = new wxGridSelection( this, selmode );
         Init();
         m_created = TRUE;
     }
@@ -1254,14 +3503,6 @@ bool wxGrid::CreateGrid( int numRows, int numCols )
 
 void wxGrid::Init()
 {
-    int i;
-
-    if ( m_numRows <= 0 )
-        m_numRows = WXGRID_DEFAULT_NUMBER_ROWS;
-
-    if ( m_numCols <= 0 )
-        m_numCols = WXGRID_DEFAULT_NUMBER_COLS;
-
     m_rowLabelWidth  = WXGRID_DEFAULT_ROW_LABEL_WIDTH;
     m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
 
@@ -1276,16 +3517,19 @@ void wxGrid::Init()
 
     m_labelTextColour = wxColour( _T("BLACK") );
 
+    // init attr cache
+    m_attrCache.row = -1;
+
     // TODO: something better than this ?
     //
     m_labelFont = this->GetFont();
     m_labelFont.SetWeight( m_labelFont.GetWeight() + 2 );
 
-    m_rowLabelHorizAlign = wxLEFT;
-    m_rowLabelVertAlign  = wxCENTRE;
+    m_rowLabelHorizAlign = wxALIGN_LEFT;
+    m_rowLabelVertAlign  = wxALIGN_CENTRE;
 
-    m_colLabelHorizAlign = wxCENTRE;
-    m_colLabelVertAlign  = wxTOP;
+    m_colLabelHorizAlign = wxALIGN_CENTRE;
+    m_colLabelVertAlign  = wxALIGN_TOP;
 
     m_defaultColWidth  = WXGRID_DEFAULT_COL_WIDTH;
     m_defaultRowHeight = m_gridWin->GetCharHeight();
@@ -1296,84 +3540,129 @@ void wxGrid::Init()
     m_defaultRowHeight += 4;
 #endif
 
+    m_gridLineColour = wxColour( 128, 128, 255 );
+    m_gridLinesEnabled = TRUE;
+    m_cellHighlightColour = m_gridLineColour;
+
+    m_cursorMode  = WXGRID_CURSOR_SELECT_CELL;
+    m_winCapture = (wxWindow *)NULL;
+    m_canDragRowSize = TRUE;
+    m_canDragColSize = TRUE;
+    m_canDragGridSize = TRUE;
+    m_dragLastPos  = -1;
+    m_dragRowOrCol = -1;
+    m_isDragging = FALSE;
+    m_startDragPos = wxDefaultPosition;
+
+    m_waitForSlowClick = FALSE;
+
+    m_rowResizeCursor = wxCursor( wxCURSOR_SIZENS );
+    m_colResizeCursor = wxCursor( wxCURSOR_SIZEWE );
+
+    m_currentCellCoords = wxGridNoCellCoords;
+
+    m_selectingTopLeft = wxGridNoCellCoords;
+    m_selectingBottomRight = wxGridNoCellCoords;
+    m_selectionBackground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT);
+    m_selectionForeground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
+
+    m_editable = TRUE;  // default for whole grid
+
+    m_inOnKeyDown = FALSE;
+    m_batchCount = 0;
+
+    m_extraWidth =
+    m_extraHeight = 50;
+
+    CalcDimensions();
+}
+
+// ----------------------------------------------------------------------------
+// the idea is to call these functions only when necessary because they create
+// quite big arrays which eat memory mostly unnecessary - in particular, if
+// default widths/heights are used for all rows/columns, we may not use these
+// arrays at all
+//
+// with some extra code, it should be possible to only store the
+// widths/heights different from default ones but this will be done later...
+// ----------------------------------------------------------------------------
+
+void wxGrid::InitRowHeights()
+{
+    m_rowHeights.Empty();
+    m_rowBottoms.Empty();
+
     m_rowHeights.Alloc( m_numRows );
     m_rowBottoms.Alloc( m_numRows );
+
     int rowBottom = 0;
-    for ( i = 0;  i < m_numRows;  i++ )
+    for ( int i = 0;  i < m_numRows;  i++ )
     {
         m_rowHeights.Add( m_defaultRowHeight );
         rowBottom += m_defaultRowHeight;
         m_rowBottoms.Add( rowBottom );
     }
+}
+
+void wxGrid::InitColWidths()
+{
+    m_colWidths.Empty();
+    m_colRights.Empty();
 
     m_colWidths.Alloc( m_numCols );
     m_colRights.Alloc( m_numCols );
     int colRight = 0;
-    for ( i = 0;  i < m_numCols;  i++ )
+    for ( int i = 0;  i < m_numCols;  i++ )
     {
         m_colWidths.Add( m_defaultColWidth );
         colRight += m_defaultColWidth;
         m_colRights.Add( colRight );
     }
+}
 
-    // TODO: improve this by using wxSystemSettings?
-    //
-    m_defaultCellFont = GetFont();
-
-    m_defaultCellHAlign = wxLEFT;
-    m_defaultCellVAlign = wxTOP;
-
-    m_gridLineColour = wxColour( 128, 128, 255 );
-    m_gridLinesEnabled = TRUE;
-
-    m_cursorMode  = WXGRID_CURSOR_SELECT_CELL;
-    m_winCapture = (wxWindow *)NULL;
-    m_dragLastPos  = -1;
-    m_dragRowOrCol = -1;
-    m_isDragging = FALSE;
-
-    m_rowResizeCursor = wxCursor( wxCURSOR_SIZENS );
-    m_colResizeCursor = wxCursor( wxCURSOR_SIZEWE );
-
-    m_currentCellCoords = wxGridNoCellCoords;
-
-    m_selectedTopLeft = wxGridNoCellCoords;
-    m_selectedBottomRight = wxGridNoCellCoords;
+int wxGrid::GetColWidth(int col) const
+{
+    return m_colWidths.IsEmpty() ? m_defaultColWidth : m_colWidths[col];
+}
 
-    m_editable = TRUE;  // default for whole grid
+int wxGrid::GetColLeft(int col) const
+{
+    return m_colRights.IsEmpty() ? col * m_defaultColWidth
+                                 : m_colRights[col] - m_colWidths[col];
+}
 
-    m_inOnKeyDown = FALSE;
-    m_batchCount = 0;
+int wxGrid::GetColRight(int col) const
+{
+    return m_colRights.IsEmpty() ? (col + 1) * m_defaultColWidth
+                                 : m_colRights[col];
+}
 
-    // TODO: extend this to other types of controls
-    //
-    m_cellEditCtrl = new wxGridTextCtrl( m_gridWin,
-                                         this,
-                                         TRUE,
-                                         wxGRID_CELLCTRL,
-                                         "",
-                                         wxPoint(1,1),
-                                         wxSize(1,1)
-#if defined(__WXMSW__)
-                                         , wxTE_MULTILINE | wxTE_NO_VSCROLL
-#endif
-                                         );
+int wxGrid::GetRowHeight(int row) const
+{
+    return m_rowHeights.IsEmpty() ? m_defaultRowHeight : m_rowHeights[row];
+}
 
-    m_cellEditCtrl->Show( FALSE );
-    m_cellEditCtrlEnabled = TRUE;
-    m_editCtrlType = wxGRID_TEXTCTRL;
+int wxGrid::GetRowTop(int row) const
+{
+    return m_rowBottoms.IsEmpty() ? row * m_defaultRowHeight
+                                  : m_rowBottoms[row] - m_rowHeights[row];
 }
 
+int wxGrid::GetRowBottom(int row) const
+{
+    return m_rowBottoms.IsEmpty() ? (row + 1) * m_defaultRowHeight
+                                  : m_rowBottoms[row];
+}
 
 void wxGrid::CalcDimensions()
 {
     int cw, ch;
     GetClientSize( &cw, &ch );
 
-    if ( m_numRows > 0  &&  m_numCols > 0 )
+    if ( m_numRows > 0  ||  m_numCols > 0 )
     {
-        int right = m_colRights[ m_numCols-1 ] + 50;
-        int bottom = m_rowBottoms[ m_numRows-1 ] + 50;
+        int right = m_numCols > 0 ? GetColRight( m_numCols-1 ) + m_extraWidth : 0;
+        int bottom = m_numRows > 0 ? GetRowBottom( m_numRows-1 ) + m_extraHeight : 0;
 
         // TODO: restore the scroll position that we had before sizing
         //
@@ -1411,6 +3700,21 @@ void wxGrid::CalcWindowSizes()
 bool wxGrid::Redimension( wxGridTableMessage& msg )
 {
     int i;
+    bool result = FALSE;
+
+#if 0
+    // if we were using the default widths/heights so far, we must change them
+    // now
+    if ( m_colWidths.IsEmpty() )
+    {
+        InitColWidths();
+    }
+
+    if ( m_rowHeights.IsEmpty() )
+    {
+        InitRowHeights();
+    }
+#endif
 
     switch ( msg.GetId() )
     {
@@ -1418,155 +3722,235 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
         {
             size_t pos = msg.GetCommandInt();
             int numRows = msg.GetCommandInt2();
-            for ( i = 0;  i < numRows;  i++ )
-            {
-                m_rowHeights.Insert( m_defaultRowHeight, pos );
-                m_rowBottoms.Insert( 0, pos );
-            }
+
             m_numRows += numRows;
 
-            int bottom = 0;
-            if ( pos > 0 ) bottom = m_rowBottoms[pos-1];
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                for ( i = 0;  i < numRows;  i++ )
+                {
+                    m_rowHeights.Insert( m_defaultRowHeight, pos );
+                    m_rowBottoms.Insert( 0, pos );
+                }
+
+                int bottom = 0;
+                if ( pos > 0 ) bottom = m_rowBottoms[pos-1];
+
+                for ( i = pos;  i < m_numRows;  i++ )
+                {
+                    bottom += m_rowHeights[i];
+                    m_rowBottoms[i] = bottom;
+                }
+            }
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+            m_selection->UpdateRows( pos, numRows );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+                attrProvider->UpdateAttrRows( pos, numRows );
 
-            for ( i = pos;  i < m_numRows;  i++ )
+            if ( !GetBatchCount() )
             {
-                bottom += m_rowHeights[i];
-                m_rowBottoms[i] = bottom;
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
             }
-            CalcDimensions();
         }
-        return TRUE;
+        result = TRUE;
+        break;
 
         case wxGRIDTABLE_NOTIFY_ROWS_APPENDED:
         {
             int numRows = msg.GetCommandInt();
-            for ( i = 0;  i < numRows;  i++ )
-            {
-                m_rowHeights.Add( m_defaultRowHeight );
-                m_rowBottoms.Add( 0 );
-            }
-
             int oldNumRows = m_numRows;
             m_numRows += numRows;
 
-            int bottom = 0;
-            if ( oldNumRows > 0 ) bottom = m_rowBottoms[oldNumRows-1];
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                for ( i = 0;  i < numRows;  i++ )
+                {
+                    m_rowHeights.Add( m_defaultRowHeight );
+                    m_rowBottoms.Add( 0 );
+                }
+
+                int bottom = 0;
+                if ( oldNumRows > 0 ) bottom = m_rowBottoms[oldNumRows-1];
 
-            for ( i = oldNumRows;  i < m_numRows;  i++ )
+                for ( i = oldNumRows;  i < m_numRows;  i++ )
+                {
+                    bottom += m_rowHeights[i];
+                    m_rowBottoms[i] = bottom;
+                }
+            }
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+            if ( !GetBatchCount() )
             {
-                bottom += m_rowHeights[i];
-                m_rowBottoms[i] = bottom;
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
             }
-            CalcDimensions();
         }
-        return TRUE;
+        result = TRUE;
+        break;
 
         case wxGRIDTABLE_NOTIFY_ROWS_DELETED:
         {
             size_t pos = msg.GetCommandInt();
             int numRows = msg.GetCommandInt2();
-            for ( i = 0;  i < numRows;  i++ )
-            {
-                m_rowHeights.Remove( pos );
-                m_rowBottoms.Remove( pos );
-            }
             m_numRows -= numRows;
 
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                for ( i = 0;  i < numRows;  i++ )
+                {
+                    m_rowHeights.Remove( pos );
+                    m_rowBottoms.Remove( pos );
+                }
+
+                int h = 0;
+                for ( i = 0;  i < m_numRows;  i++ )
+                {
+                    h += m_rowHeights[i];
+                    m_rowBottoms[i] = h;
+                }
+            }
             if ( !m_numRows )
             {
-                m_numCols = 0;
-                m_colWidths.Clear();
-                m_colRights.Clear();
                 m_currentCellCoords = wxGridNoCellCoords;
             }
             else
             {
-                if ( m_currentCellCoords.GetRow() >= m_numRows )
-                    m_currentCellCoords.Set( 0, 0 );
-
-                int h = 0;
-                for ( i = 0;  i < m_numRows;  i++ )
-                {
-                    h += m_rowHeights[i];
-                    m_rowBottoms[i] = h;
-                }
+                if ( m_currentCellCoords.GetRow() >= m_numRows )
+                    m_currentCellCoords.Set( 0, 0 );
+            }
+            m_selection->UpdateRows( pos, -((int)numRows) );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider) {
+                attrProvider->UpdateAttrRows( pos, -((int)numRows) );
+// ifdef'd out following patch from Paul Gammans
+#if 0
+                // No need to touch column attributes, unless we
+                // removed _all_ rows, in this case, we remove
+                // all column attributes.
+                // I hate to do this here, but the
+                // needed data is not available inside UpdateAttrRows.
+                if ( !GetNumberRows() )
+                    attrProvider->UpdateAttrCols( 0, -GetNumberCols() );
+#endif
+            }
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
             }
-
-            CalcDimensions();
         }
-        return TRUE;
+        result = TRUE;
+        break;
 
         case wxGRIDTABLE_NOTIFY_COLS_INSERTED:
         {
             size_t pos = msg.GetCommandInt();
             int numCols = msg.GetCommandInt2();
-            for ( i = 0;  i < numCols;  i++ )
-            {
-                m_colWidths.Insert( m_defaultColWidth, pos );
-                m_colRights.Insert( 0, pos );
-            }
             m_numCols += numCols;
 
-            int right = 0;
-            if ( pos > 0 ) right = m_colRights[pos-1];
+            if ( !m_colWidths.IsEmpty() )
+            {
+                for ( i = 0;  i < numCols;  i++ )
+                {
+                    m_colWidths.Insert( m_defaultColWidth, pos );
+                    m_colRights.Insert( 0, pos );
+                }
+
+                int right = 0;
+                if ( pos > 0 ) right = m_colRights[pos-1];
 
-            for ( i = pos;  i < m_numCols;  i++ )
+                for ( i = pos;  i < m_numCols;  i++ )
+                {
+                    right += m_colWidths[i];
+                    m_colRights[i] = right;
+                }
+            }
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+            m_selection->UpdateCols( pos, numCols );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+                attrProvider->UpdateAttrCols( pos, numCols );
+            if ( !GetBatchCount() )
             {
-                right += m_colWidths[i];
-                m_colRights[i] = right;
+                CalcDimensions();
+                m_colLabelWin->Refresh();
             }
-            CalcDimensions();
+
         }
-        return TRUE;
+        result = TRUE;
+        break;
 
         case wxGRIDTABLE_NOTIFY_COLS_APPENDED:
         {
             int numCols = msg.GetCommandInt();
-            for ( i = 0;  i < numCols;  i++ )
-            {
-                m_colWidths.Add( m_defaultColWidth );
-                m_colRights.Add( 0 );
-            }
-
             int oldNumCols = m_numCols;
             m_numCols += numCols;
+            if ( !m_colWidths.IsEmpty() )
+            {
+                for ( i = 0;  i < numCols;  i++ )
+                {
+                    m_colWidths.Add( m_defaultColWidth );
+                    m_colRights.Add( 0 );
+                }
 
-            int right = 0;
-            if ( oldNumCols > 0 ) right = m_colRights[oldNumCols-1];
+                int right = 0;
+                if ( oldNumCols > 0 ) right = m_colRights[oldNumCols-1];
 
-            for ( i = oldNumCols;  i < m_numCols;  i++ )
+                for ( i = oldNumCols;  i < m_numCols;  i++ )
+                {
+                    right += m_colWidths[i];
+                    m_colRights[i] = right;
+                }
+            }
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+            if ( !GetBatchCount() )
             {
-                right += m_colWidths[i];
-                m_colRights[i] = right;
+                CalcDimensions();
+                m_colLabelWin->Refresh();
             }
-            CalcDimensions();
         }
-        return TRUE;
+        result = TRUE;
+        break;
 
         case wxGRIDTABLE_NOTIFY_COLS_DELETED:
         {
             size_t pos = msg.GetCommandInt();
             int numCols = msg.GetCommandInt2();
-            for ( i = 0;  i < numCols;  i++ )
-            {
-                m_colWidths.Remove( pos );
-                m_colRights.Remove( pos );
-            }
             m_numCols -= numCols;
 
-            if ( !m_numCols )
-            {
-#if 0  // leave the row alone here so that AppendCols will work subsequently
-                m_numRows = 0;
-                m_rowHeights.Clear();
-                m_rowBottoms.Clear();
-#endif
-                m_currentCellCoords = wxGridNoCellCoords;
-            }
-            else
+            if ( !m_colWidths.IsEmpty() )
             {
-                if ( m_currentCellCoords.GetCol() >= m_numCols )
-                    m_currentCellCoords.Set( 0, 0 );
+                for ( i = 0;  i < numCols;  i++ )
+                {
+                    m_colWidths.Remove( pos );
+                    m_colRights.Remove( pos );
+                }
 
                 int w = 0;
                 for ( i = 0;  i < m_numCols;  i++ )
@@ -1575,16 +3959,51 @@ bool wxGrid::Redimension( wxGridTableMessage& msg )
                     m_colRights[i] = w;
                 }
             }
-            CalcDimensions();
+            if ( !m_numCols )
+            {
+                m_currentCellCoords = wxGridNoCellCoords;
+            }
+            else
+            {
+                if ( m_currentCellCoords.GetCol() >= m_numCols )
+                  m_currentCellCoords.Set( 0, 0 );
+            }
+            m_selection->UpdateCols( pos, -((int)numCols) );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider) {
+                attrProvider->UpdateAttrCols( pos, -((int)numCols) );
+// ifdef'd out following patch from Paul Gammans
+#if 0
+                // No need to touch row attributes, unless we
+                // removed _all_ columns, in this case, we remove
+                // all row attributes.
+                // I hate to do this here, but the
+                // needed data is not available inside UpdateAttrCols.
+                if ( !GetNumberCols() )
+                    attrProvider->UpdateAttrRows( 0, -GetNumberRows() );
+#endif
+            }
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_colLabelWin->Refresh();
+            }
+            return TRUE;
         }
-        return TRUE;
+#if 0
+// There is no path to this code !!!!!!
+       result = TRUE;
+        break;
+#endif
     }
 
-    return FALSE;
+    if (result && !GetBatchCount() )
+        m_gridWin->Refresh();
+    return result;
 }
 
 
-void wxGrid::CalcRowLabelsExposed( wxRegion& reg )
+void wxGrid::CalcRowLabelsExposed( const wxRegion& reg )
 {
     wxRegionIterator iter( reg );
     wxRect r;
@@ -1617,13 +4036,13 @@ void wxGrid::CalcRowLabelsExposed( wxRegion& reg )
         // find the row labels within these bounds
         //
         int row;
-        int rowTop;
         for ( row = 0;  row < m_numRows;  row++ )
         {
-            if ( m_rowBottoms[row] < top ) continue;
+            if ( GetRowBottom(row) < top )
+                continue;
 
-            rowTop = m_rowBottoms[row] - m_rowHeights[row];
-            if ( rowTop > bottom ) break;
+            if ( GetRowTop(row) > bottom )
+                break;
 
             m_rowLabelsExposed.Add( row );
         }
@@ -1633,7 +4052,7 @@ void wxGrid::CalcRowLabelsExposed( wxRegion& reg )
 }
 
 
-void wxGrid::CalcColLabelsExposed( wxRegion& reg )
+void wxGrid::CalcColLabelsExposed( const wxRegion& reg )
 {
     wxRegionIterator iter( reg );
     wxRect r;
@@ -1666,13 +4085,13 @@ void wxGrid::CalcColLabelsExposed( wxRegion& reg )
         // find the cells within these bounds
         //
         int col;
-        int colLeft;
         for ( col = 0;  col < m_numCols;  col++ )
         {
-            if ( m_colRights[col] < left ) continue;
+            if ( GetColRight(col) < left )
+                continue;
 
-            colLeft = m_colRights[col] - m_colWidths[col];
-            if ( colLeft > right ) break;
+            if ( GetColLeft(col) > right )
+                break;
 
             m_colLabelsExposed.Add( col );
         }
@@ -1682,7 +4101,7 @@ void wxGrid::CalcColLabelsExposed( wxRegion& reg )
 }
 
 
-void wxGrid::CalcCellsExposed( wxRegion& reg )
+void wxGrid::CalcCellsExposed( const wxRegion& reg )
 {
     wxRegionIterator iter( reg );
     wxRect r;
@@ -1718,29 +4137,31 @@ void wxGrid::CalcCellsExposed( wxRegion& reg )
         // find the cells within these bounds
         //
         int row, col;
-        int colLeft, rowTop;
         for ( row = 0;  row < m_numRows;  row++ )
         {
-            if ( m_rowBottoms[row] < top ) continue;
+            if ( GetRowBottom(row) <= top )
+                continue;
 
-            rowTop = m_rowBottoms[row] - m_rowHeights[row];
-            if ( rowTop > bottom ) break;
+            if ( GetRowTop(row) > bottom )
+                break;
 
             m_rowsExposed.Add( row );
 
             for ( col = 0;  col < m_numCols;  col++ )
             {
-                if ( m_colRights[col] < left ) continue;
+                if ( GetColRight(col) <= left )
+                    continue;
 
-                colLeft = m_colRights[col] - m_colWidths[col];
-                if ( colLeft > right ) break;
+                if ( GetColLeft(col) > right )
+                    break;
 
-                if ( m_colsExposed.Index( col ) == wxNOT_FOUND ) m_colsExposed.Add( col );
+                if ( m_colsExposed.Index( col ) == wxNOT_FOUND )
+                    m_colsExposed.Add( col );
                 m_cellsExposed.Add( wxGridCellCoords( row, col ) );
             }
         }
 
-        iter++ ;
+        iter++;
     }
 }
 
@@ -1767,6 +4188,9 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
 
                     wxClientDC dc( m_gridWin );
                     PrepareDC( dc );
+                    y = wxMax( y,
+                               GetRowTop(m_dragRowOrCol) +
+                               GetRowMinimalHeight(m_dragRowOrCol) );
                     dc.SetLogicalFunction(wxINVERT);
                     if ( m_dragLastPos >= 0 )
                     {
@@ -1778,10 +4202,13 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
                 break;
 
                 case WXGRID_CURSOR_SELECT_ROW:
-                    if ( (row = YToRow( y )) >= 0  &&
-                         !IsInSelection( row, 0 ) )
+                    if ( (row = YToRow( y )) >= 0 )
                     {
-                        SelectRow( row, TRUE );
+                        m_selection->SelectRow( row,
+                                                event.ControlDown(),
+                                                event.ShiftDown(),
+                                                event.AltDown(),
+                                                event.MetaDown() );
                     }
 
                 // default label to suppress warnings about "enumeration value
@@ -1816,9 +4243,25 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
         {
             row = YToRow(y);
             if ( row >= 0  &&
-                 !SendEvent( EVT_GRID_LABEL_LEFT_CLICK, row, -1, event ) )
+                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, row, -1, event ) )
             {
-                SelectRow( row, event.ShiftDown() );
+                if ( !event.ShiftDown() && !event.ControlDown() )
+                    ClearSelection();
+                if ( event.ShiftDown() )
+                    m_selection->SelectBlock( m_currentCellCoords.GetRow(),
+                                              0,
+                                              row,
+                                              GetNumberCols() - 1,
+                                              event.ControlDown(),
+                                              event.ShiftDown(),
+                                              event.AltDown(),
+                                              event.MetaDown() );
+                else
+                    m_selection->SelectRow( row,
+                                            event.ControlDown(),
+                                            event.ShiftDown(),
+                                            event.AltDown(),
+                                            event.MetaDown() );
                 ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin);
             }
         }
@@ -1826,7 +4269,8 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
         {
             // starting to drag-resize a row
             //
-            ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin);
+            if ( CanDragRowSize() )
+                ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin);
         }
     }
 
@@ -1838,7 +4282,7 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
         if ( YToEdgeOfRow(y) < 0 )
         {
             row = YToRow(y);
-            SendEvent(  EVT_GRID_LABEL_LEFT_DCLICK, row, -1, event );
+            SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, row, -1, event );
         }
     }
 
@@ -1854,7 +4298,7 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
             // Note: we are ending the event *after* doing
             // default processing in this case
             //
-            SendEvent( EVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
+            SendEvent( wxEVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
         }
 
         ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin);
@@ -1867,7 +4311,7 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
     else if ( event.RightDown() )
     {
         row = YToRow(y);
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_CLICK, row, -1, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, row, -1, event ) )
         {
             // no default action at the moment
         }
@@ -1879,7 +4323,7 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
     else if ( event.RightDClick() )
     {
         row = YToRow(y);
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_DCLICK, row, -1, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, row, -1, event ) )
         {
             // no default action at the moment
         }
@@ -1896,7 +4340,8 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
             if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
             {
                 // don't capture the mouse yet
-                ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin, FALSE);
+                if ( CanDragRowSize() )
+                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin, FALSE);
             }
         }
         else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
@@ -1929,6 +4374,9 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
 
                     wxClientDC dc( m_gridWin );
                     PrepareDC( dc );
+
+                    x = wxMax( x, GetColLeft(m_dragRowOrCol) +
+                                  GetColMinimalWidth(m_dragRowOrCol));
                     dc.SetLogicalFunction(wxINVERT);
                     if ( m_dragLastPos >= 0 )
                     {
@@ -1940,10 +4388,13 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
                 break;
 
                 case WXGRID_CURSOR_SELECT_COL:
-                    if ( (col = XToCol( x )) >= 0  &&
-                         !IsInSelection( 0, col ) )
+                    if ( (col = XToCol( x )) >= 0 )
                     {
-                        SelectCol( col, TRUE );
+                        m_selection->SelectCol( col,
+                                                event.ControlDown(),
+                                                event.ShiftDown(),
+                                                event.AltDown(),
+                                                event.MetaDown() );
                     }
 
                 // default label to suppress warnings about "enumeration value
@@ -1978,9 +4429,24 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
         {
             col = XToCol(x);
             if ( col >= 0  &&
-                 !SendEvent( EVT_GRID_LABEL_LEFT_CLICK, -1, col, event ) )
+                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, col, event ) )
             {
-                SelectCol( col, event.ShiftDown() );
+                if ( !event.ShiftDown() && !event.ControlDown() )
+                    ClearSelection();
+                if ( event.ShiftDown() )
+                    m_selection->SelectBlock( 0,
+                                              m_currentCellCoords.GetCol(),
+                                              GetNumberRows() - 1, col,
+                                              event.ControlDown(),
+                                              event.ShiftDown(),
+                                              event.AltDown(),
+                                              event.MetaDown() );
+                else
+                    m_selection->SelectCol( col,
+                                            event.ControlDown(),
+                                            event.ShiftDown(),
+                                            event.AltDown(),
+                                            event.MetaDown() );
                 ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, m_colLabelWin);
             }
         }
@@ -1988,7 +4454,8 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
         {
             // starting to drag-resize a col
             //
-            ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin);
+            if ( CanDragColSize() )
+                ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin);
         }
     }
 
@@ -2000,7 +4467,7 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
         if ( XToEdgeOfCol(x) < 0 )
         {
             col = XToCol(x);
-            SendEvent(  EVT_GRID_LABEL_LEFT_DCLICK, -1, col, event );
+            SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, col, event );
         }
     }
 
@@ -2016,7 +4483,7 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
             // Note: we are ending the event *after* doing
             // default processing in this case
             //
-            SendEvent( EVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
+            SendEvent( wxEVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
         }
 
         ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_colLabelWin);
@@ -2029,7 +4496,7 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
     else if ( event.RightDown() )
     {
         col = XToCol(x);
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_CLICK, -1, col, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, col, event ) )
         {
             // no default action at the moment
         }
@@ -2041,7 +4508,7 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
     else if ( event.RightDClick() )
     {
         col = XToCol(x);
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_DCLICK, -1, col, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, col, event ) )
         {
             // no default action at the moment
         }
@@ -2058,7 +4525,8 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
             if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
             {
                 // don't capture the cursor yet
-                ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin, FALSE);
+                if ( CanDragColSize() )
+                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin, FALSE);
             }
         }
         else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
@@ -2076,7 +4544,7 @@ void wxGrid::ProcessCornerLabelMouseEvent( wxMouseEvent& event )
         // indicate corner label by having both row and
         // col args == -1
         //
-        if ( !SendEvent( EVT_GRID_LABEL_LEFT_CLICK, -1, -1, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, -1, event ) )
         {
             SelectAll();
         }
@@ -2084,12 +4552,12 @@ void wxGrid::ProcessCornerLabelMouseEvent( wxMouseEvent& event )
 
     else if ( event.LeftDClick() )
     {
-        SendEvent( EVT_GRID_LABEL_LEFT_DCLICK, -1, -1, event );
+        SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, -1, event );
     }
 
     else if ( event.RightDown() )
     {
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_CLICK, -1, -1, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, -1, event ) )
         {
             // no default action at the moment
         }
@@ -2097,7 +4565,7 @@ void wxGrid::ProcessCornerLabelMouseEvent( wxMouseEvent& event )
 
     else if ( event.RightDClick() )
     {
-        if ( !SendEvent( EVT_GRID_LABEL_RIGHT_DCLICK, -1, -1, event ) )
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, -1, event ) )
         {
             // no default action at the moment
         }
@@ -2179,22 +4647,64 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
     if ( event.Dragging() )
     {
+        //wxLogDebug("pos(%d, %d) coords(%d, %d)", pos.x, pos.y, coords.GetRow(), coords.GetCol());
+
+        // Don't start doing anything until the mouse has been drug at
+        // least 3 pixels in any direction...
+        if (! m_isDragging)
+        {
+            if (m_startDragPos == wxDefaultPosition)
+            {
+                m_startDragPos = pos;
+                return;
+            }
+            if (abs(m_startDragPos.x - pos.x) < 4 && abs(m_startDragPos.y - pos.y) < 4)
+                return;
+        }
+
         m_isDragging = TRUE;
         if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
         {
             // Hide the edit control, so it
             // won't interfer with drag-shrinking.
-            if ( IsCellEditControlEnabled() )
+            if ( IsCellEditControlShown() )
+            {
                 HideCellEditControl();
+                SaveEditControlValue();
+            }
+
+            // Have we captured the mouse yet?
+            if (! m_winCapture)
+            {
+                m_winCapture = m_gridWin;
+                m_winCapture->CaptureMouse();
+            }
+
             if ( coords != wxGridNoCellCoords )
             {
-                if ( !IsSelection() )
+                if ( event.ControlDown() )
                 {
-                    SelectBlock( coords, coords );
+                    if ( m_selectingKeyboard == wxGridNoCellCoords)
+                        m_selectingKeyboard = coords;
+                    HighlightBlock ( m_selectingKeyboard, coords );
                 }
                 else
                 {
-                    SelectBlock( m_currentCellCoords, coords );
+                    if ( !IsSelection() )
+                    {
+                        HighlightBlock( coords, coords );
+                    }
+                    else
+                    {
+                        HighlightBlock( m_currentCellCoords, coords );
+                    }
+                }
+
+                if (! IsVisible(coords))
+                {
+                    MakeCellVisible(coords);
+                    // TODO: need to introduce a delay or something here.  The
+                    // scrolling is way to fast, at least on MSW - also on GTK.
                 }
             }
         }
@@ -2206,6 +4716,8 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
             wxClientDC dc( m_gridWin );
             PrepareDC( dc );
+            y = wxMax( y, GetRowTop(m_dragRowOrCol) +
+                          GetRowMinimalHeight(m_dragRowOrCol) );
             dc.SetLogicalFunction(wxINVERT);
             if ( m_dragLastPos >= 0 )
             {
@@ -2222,6 +4734,8 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
             wxClientDC dc( m_gridWin );
             PrepareDC( dc );
+            x = wxMax( x, GetColLeft(m_dragRowOrCol) +
+                          GetColMinimalWidth(m_dragRowOrCol) );
             dc.SetLogicalFunction(wxINVERT);
             if ( m_dragLastPos >= 0 )
             {
@@ -2235,172 +4749,246 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
     }
 
     m_isDragging = FALSE;
+    m_startDragPos = wxDefaultPosition;
 
-    if ( coords != wxGridNoCellCoords )
-    {
-        // VZ: if we do this, the mode is reset to WXGRID_CURSOR_SELECT_CELL
-        //     immediately after it becomes WXGRID_CURSOR_RESIZE_ROW/COL under
-        //     wxGTK
+    // VZ: if we do this, the mode is reset to WXGRID_CURSOR_SELECT_CELL
+    //     immediately after it becomes WXGRID_CURSOR_RESIZE_ROW/COL under
+    //     wxGTK
 #if 0
-        if ( event.Entering() || event.Leaving() )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-            m_gridWin->SetCursor( *wxSTANDARD_CURSOR );
-        }
-        else
+    if ( event.Entering() || event.Leaving() )
+    {
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        m_gridWin->SetCursor( *wxSTANDARD_CURSOR );
+    }
+    else
 #endif // 0
 
-        // ------------ Left button pressed
-        //
-        if ( event.LeftDown() )
+    // ------------ Left button pressed
+    //
+    if ( event.LeftDown() && coords != wxGridNoCellCoords )
+    {
+        if ( !SendEvent( wxEVT_GRID_CELL_LEFT_CLICK,
+                       coords.GetRow(),
+                       coords.GetCol(),
+                       event ) )
         {
+            if ( !event.ControlDown() )
+                ClearSelection();
             if ( event.ShiftDown() )
             {
-                SelectBlock( m_currentCellCoords, coords );
+                m_selection->SelectBlock( m_currentCellCoords.GetRow(),
+                                          m_currentCellCoords.GetCol(),
+                                          coords.GetRow(),
+                                          coords.GetCol(),
+                                          event.ControlDown(),
+                                          event.ShiftDown(),
+                                          event.AltDown(),
+                                          event.MetaDown() );
             }
             else if ( XToEdgeOfCol(x) < 0  &&
                       YToEdgeOfRow(y) < 0 )
             {
-                if ( !SendEvent( EVT_GRID_CELL_LEFT_CLICK,
-                                 coords.GetRow(),
-                                 coords.GetCol(),
-                                 event ) )
+                DisableCellEditControl();
+                MakeCellVisible( coords );
+
+                // if this is the second click on this cell then start
+                // the edit control
+                if ( m_waitForSlowClick &&
+                     (coords == m_currentCellCoords) &&
+                     CanEnableCellControl())
+                {
+                    EnableCellEditControl();
+
+                    wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+                    wxGridCellEditor *editor = attr->GetEditor(this,
+                                                               coords.GetRow(),
+                                                               coords.GetCol());
+                    editor->StartingClick();
+                    editor->DecRef();
+                    attr->DecRef();
+
+                    m_waitForSlowClick = FALSE;
+                }
+                else
                 {
-                    MakeCellVisible( coords );
-                    SetCurrentCell( coords );
+                    if ( event.ControlDown() )
+                    {
+                        m_selection->ToggleCellSelection( coords.GetRow(),
+                                                          coords.GetCol(),
+                                                          event.ControlDown(),
+                                                          event.ShiftDown(),
+                                                          event.AltDown(),
+                                                          event.MetaDown() );
+                        m_selectingTopLeft = wxGridNoCellCoords;
+                        m_selectingBottomRight = wxGridNoCellCoords;
+                        m_selectingKeyboard = coords;
+                    }
+                    else
+                    {
+                        SetCurrentCell( coords );
+                        if ( m_selection->GetSelectionMode()
+                             != wxGrid::wxGridSelectCells)
+                            HighlightBlock( coords, coords );
+                    }
+                    m_waitForSlowClick = TRUE;
                 }
             }
         }
+    }
 
 
-        // ------------ Left double click
-        //
-        else if ( event.LeftDClick() )
+    // ------------ Left double click
+    //
+    else if ( event.LeftDClick() && coords != wxGridNoCellCoords )
+    {
+        DisableCellEditControl();
+
+        if ( XToEdgeOfCol(x) < 0  &&  YToEdgeOfRow(y) < 0 )
         {
-            if ( XToEdgeOfCol(x) < 0  &&  YToEdgeOfRow(y) < 0 )
-            {
-                SendEvent( EVT_GRID_CELL_LEFT_DCLICK,
-                           coords.GetRow(),
-                           coords.GetCol(),
-                           event );
-            }
+            SendEvent( wxEVT_GRID_CELL_LEFT_DCLICK,
+                       coords.GetRow(),
+                       coords.GetCol(),
+                       event );
         }
+    }
 
 
-        // ------------ Left button released
-        //
-        else if ( event.LeftUp() )
+    // ------------ Left button released
+    //
+    else if ( event.LeftUp() )
+    {
+        if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
         {
-            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+            if ( m_selectingTopLeft != wxGridNoCellCoords &&
+                 m_selectingBottomRight != wxGridNoCellCoords )
             {
-                if ( IsSelection() )
+                if (m_winCapture)
                 {
-                    SendEvent( EVT_GRID_RANGE_SELECT, -1, -1, event );
+                    m_winCapture->ReleaseMouse();
+                    m_winCapture = NULL;
                 }
-
-                // Show the edit control, if it has
-                // been hidden for drag-shrinking.
-                if ( IsCellEditControlEnabled() )
-                    ShowCellEditControl();
+                m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
+                                          m_selectingTopLeft.GetCol(),
+                                          m_selectingBottomRight.GetRow(),
+                                          m_selectingBottomRight.GetCol(),
+                                          event.ControlDown(),
+                                          event.ShiftDown(),
+                                          event.AltDown(),
+                                          event.MetaDown() );
+                m_selectingTopLeft = wxGridNoCellCoords;
+                m_selectingBottomRight = wxGridNoCellCoords;
             }
-            else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
-            {
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-                DoEndDragResizeRow();
 
-                // Note: we are ending the event *after* doing
-                // default processing in this case
-                //
-                SendEvent( EVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
-            }
-            else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
-            {
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-                DoEndDragResizeCol();
+            // Show the edit control, if it has been hidden for
+            // drag-shrinking.
+            ShowCellEditControl();
+        }
+        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+            DoEndDragResizeRow();
 
-                // Note: we are ending the event *after* doing
-                // default processing in this case
-                //
-                SendEvent( EVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
-            }
+            // Note: we are ending the event *after* doing
+            // default processing in this case
+            //
+            SendEvent( wxEVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
+        }
+        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+            DoEndDragResizeCol();
 
-            m_dragLastPos = -1;
+            // Note: we are ending the event *after* doing
+            // default processing in this case
+            //
+            SendEvent( wxEVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
         }
 
+        m_dragLastPos = -1;
+    }
 
-        // ------------ Right button down
-        //
-        else if ( event.RightDown() )
+
+    // ------------ Right button down
+    //
+    else if ( event.RightDown() && coords != wxGridNoCellCoords )
+    {
+        DisableCellEditControl();
+        if ( !SendEvent( wxEVT_GRID_CELL_RIGHT_CLICK,
+                         coords.GetRow(),
+                         coords.GetCol(),
+                         event ) )
         {
-            if ( !SendEvent( EVT_GRID_CELL_RIGHT_CLICK,
-                             coords.GetRow(),
-                             coords.GetCol(),
-                             event ) )
-            {
-                // no default action at the moment
-            }
+            // no default action at the moment
         }
+    }
 
 
-        // ------------ Right double click
-        //
-        else if ( event.RightDClick() )
+    // ------------ Right double click
+    //
+    else if ( event.RightDClick() && coords != wxGridNoCellCoords )
+    {
+        DisableCellEditControl();
+        if ( !SendEvent( wxEVT_GRID_CELL_RIGHT_DCLICK,
+                         coords.GetRow(),
+                         coords.GetCol(),
+                         event ) )
         {
-            if ( !SendEvent( EVT_GRID_CELL_RIGHT_DCLICK,
-                             coords.GetRow(),
-                             coords.GetCol(),
-                             event ) )
-            {
-                // no default action at the moment
-            }
+            // no default action at the moment
         }
+    }
+
+    // ------------ Moving and no button action
+    //
+    else if ( event.Moving() && !event.IsButton() )
+    {
+        int dragRow = YToEdgeOfRow( y );
+        int dragCol = XToEdgeOfCol( x );
 
-        // ------------ Moving and no button action
+        // Dragging on the corner of a cell to resize in both
+        // directions is not implemented yet...
         //
-        else if ( event.Moving() && !event.IsButton() )
+        if ( dragRow >= 0  &&  dragCol >= 0 )
         {
-            int dragRow = YToEdgeOfRow( y );
-            int dragCol = XToEdgeOfCol( x );
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+            return;
+        }
 
-            // Dragging on the corner of a cell to resize in both
-            // directions is not implemented yet...
-            //
-            if ( dragRow >= 0  &&  dragCol >= 0 )
-            {
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-                return;
-            }
+        if ( dragRow >= 0 )
+        {
+            m_dragRowOrCol = dragRow;
 
-            if ( dragRow >= 0 )
+            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
             {
-                m_dragRowOrCol = dragRow;
-
-                if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
-                {
+                if ( CanDragRowSize() && CanDragGridSize() )
                     ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW);
-                }
-
-                return;
             }
 
             if ( dragCol >= 0 )
             {
                 m_dragRowOrCol = dragCol;
+            }
 
-                if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
-                {
-                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL);
-                }
+            return;
+        }
 
-                return;
-            }
+        if ( dragCol >= 0 )
+        {
+            m_dragRowOrCol = dragCol;
 
-            // Neither on a row or col edge
-            //
-            if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
+            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
             {
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+                if ( CanDragColSize() && CanDragGridSize() )
+                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL);
             }
+
+            return;
+        }
+
+        // Neither on a row or col edge
+        //
+        if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
         }
     }
 }
@@ -2421,8 +5009,9 @@ void wxGrid::DoEndDragResizeRow()
         dc.SetLogicalFunction( wxINVERT );
         dc.DrawLine( left, m_dragLastPos, left+cw, m_dragLastPos );
         HideCellEditControl();
+        SaveEditControlValue();
 
-        int rowTop = m_rowBottoms[m_dragRowOrCol] - m_rowHeights[m_dragRowOrCol];
+        int rowTop = GetRowTop(m_dragRowOrCol);
         SetRowSize( m_dragRowOrCol,
                     wxMax( m_dragLastPos - rowTop, WXGRID_MIN_ROW_HEIGHT ) );
 
@@ -2459,10 +5048,12 @@ void wxGrid::DoEndDragResizeCol()
         dc.SetLogicalFunction( wxINVERT );
         dc.DrawLine( m_dragLastPos, top, m_dragLastPos, top+ch );
         HideCellEditControl();
+        SaveEditControlValue();
 
-        int colLeft = m_colRights[m_dragRowOrCol] - m_colWidths[m_dragRowOrCol];
+        int colLeft = GetColLeft(m_dragRowOrCol);
         SetColSize( m_dragRowOrCol,
-                    wxMax( m_dragLastPos - colLeft, WXGRID_MIN_COL_WIDTH ) );
+                    wxMax( m_dragLastPos - colLeft,
+                           GetColMinimalWidth(m_dragRowOrCol) ) );
 
         if ( !GetBatchCount() )
         {
@@ -2520,8 +5111,10 @@ void wxGrid::ClearGrid()
 {
     if ( m_table )
     {
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
+
         m_table->Clear();
-        SetEditControlValue();
         if ( !GetBatchCount() ) m_gridWin->Refresh();
     }
 }
@@ -2536,44 +5129,18 @@ bool wxGrid::InsertRows( int pos, int numRows, bool WXUNUSED(updateLabels) )
         wxFAIL_MSG( wxT("Called wxGrid::InsertRows() before calling CreateGrid()") );
         return FALSE;
     }
-
-    if ( m_table )
-    {
-        bool ok = m_table->InsertRows( pos, numRows );
-
-        // the table will have sent the results of the insert row
-        // operation to this view object as a grid table message
-        //
-        if ( ok )
-        {
-            if ( m_numCols == 0 )
-            {
-                m_table->AppendCols( WXGRID_DEFAULT_NUMBER_COLS );
-                //
-                // TODO: perhaps instead of appending the default number of cols
-                // we should remember what the last non-zero number of cols was ?
-                //
-            }
-
-            if ( m_currentCellCoords == wxGridNoCellCoords )
-            {
-                // if we have just inserted cols into an empty grid the current
-                // cell will be undefined...
-                //
-                SetCurrentCell( 0, 0 );
-            }
-
-            ClearSelection();
-            if ( !GetBatchCount() ) Refresh();
-        }
-
-        SetEditControlValue();
-        return ok;
-    }
-    else
+
+    if ( m_table )
     {
-        return FALSE;
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
+
+        return m_table->InsertRows( pos, numRows );
+
+        // the table will have sent the results of the insert row
+        // operation to this view object as a grid table message
     }
+    return FALSE;
 }
 
 
@@ -2587,27 +5154,9 @@ bool wxGrid::AppendRows( int numRows, bool WXUNUSED(updateLabels) )
         return FALSE;
     }
 
-    if ( m_table && m_table->AppendRows( numRows ) )
-    {
-        if ( m_currentCellCoords == wxGridNoCellCoords )
-        {
-            // if we have just inserted cols into an empty grid the current
-            // cell will be undefined...
-            //
-            SetCurrentCell( 0, 0 );
-        }
-
-        // the table will have sent the results of the append row
-        // operation to this view object as a grid table message
-        //
-        ClearSelection();
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
-    }
+    return ( m_table && m_table->AppendRows( numRows ) );
+    // the table will have sent the results of the append row
+    // operation to this view object as a grid table message
 }
 
 
@@ -2621,24 +5170,16 @@ bool wxGrid::DeleteRows( int pos, int numRows, bool WXUNUSED(updateLabels) )
         return FALSE;
     }
 
-    if ( m_table && m_table->DeleteRows( pos, numRows ) )
+    if ( m_table )
     {
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
+
+        return (m_table->DeleteRows( pos, numRows ));
         // the table will have sent the results of the delete row
         // operation to this view object as a grid table message
-        //
-        if ( m_numRows > 0 )
-            SetEditControlValue();
-        else
-            HideCellEditControl();
-
-        ClearSelection();
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
     }
+    return FALSE;
 }
 
 
@@ -2654,33 +5195,14 @@ bool wxGrid::InsertCols( int pos, int numCols, bool WXUNUSED(updateLabels) )
 
     if ( m_table )
     {
-        HideCellEditControl();
-        bool ok = m_table->InsertCols( pos, numCols );
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
 
+        return m_table->InsertCols( pos, numCols );
         // the table will have sent the results of the insert col
         // operation to this view object as a grid table message
-        //
-        if ( ok )
-        {
-            if ( m_currentCellCoords == wxGridNoCellCoords )
-            {
-                // if we have just inserted cols into an empty grid the current
-                // cell will be undefined...
-                //
-                SetCurrentCell( 0, 0 );
-            }
-
-            ClearSelection();
-            if ( !GetBatchCount() ) Refresh();
-        }
-
-        SetEditControlValue();
-        return ok;
-    }
-    else
-    {
-        return FALSE;
     }
+    return FALSE;
 }
 
 
@@ -2694,27 +5216,9 @@ bool wxGrid::AppendCols( int numCols, bool WXUNUSED(updateLabels) )
         return FALSE;
     }
 
-    if ( m_table && m_table->AppendCols( numCols ) )
-    {
-        // the table will have sent the results of the append col
-        // operation to this view object as a grid table message
-        //
-        if ( m_currentCellCoords == wxGridNoCellCoords )
-        {
-            // if we have just inserted cols into an empty grid the current
-            // cell will be undefined...
-            //
-            SetCurrentCell( 0, 0 );
-        }
-
-        ClearSelection();
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
-    }
+    return ( m_table && m_table->AppendCols( numCols ) );
+    // the table will have sent the results of the append col
+    // operation to this view object as a grid table message
 }
 
 
@@ -2728,24 +5232,16 @@ bool wxGrid::DeleteCols( int pos, int numCols, bool WXUNUSED(updateLabels) )
         return FALSE;
     }
 
-    if ( m_table && m_table->DeleteCols( pos, numCols ) )
+    if ( m_table )
     {
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
+
+        return ( m_table->DeleteCols( pos, numCols ) );
         // the table will have sent the results of the delete col
         // operation to this view object as a grid table message
-        //
-        if ( m_numCols > 0 )
-            SetEditControlValue();
-        else
-            HideCellEditControl();
-
-        ClearSelection();
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
     }
+    return FALSE;
 }
 
 
@@ -2761,8 +5257,7 @@ bool wxGrid::SendEvent( const wxEventType type,
                         int row, int col,
                         wxMouseEvent& mouseEv )
 {
-    if ( type == EVT_GRID_ROW_SIZE ||
-         type == EVT_GRID_COL_SIZE )
+    if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
     {
         int rowOrCol = (row == -1 ? col : row);
 
@@ -2770,7 +5265,8 @@ bool wxGrid::SendEvent( const wxEventType type,
                                  type,
                                  this,
                                  rowOrCol,
-                                 mouseEv.GetX(), mouseEv.GetY(),
+                                 mouseEv.GetX() + GetColLabelSize(),
+                                 mouseEv.GetY() + GetRowLabelSize(),
                                  mouseEv.ControlDown(),
                                  mouseEv.ShiftDown(),
                                  mouseEv.AltDown(),
@@ -2778,13 +5274,15 @@ bool wxGrid::SendEvent( const wxEventType type,
 
         return GetEventHandler()->ProcessEvent(gridEvt);
     }
-    else if ( type == EVT_GRID_RANGE_SELECT )
+    else if ( type == wxEVT_GRID_RANGE_SELECT )
     {
+        // Right now, it should _never_ end up here!
         wxGridRangeSelectEvent gridEvt( GetId(),
                                         type,
                                         this,
-                                        m_selectedTopLeft,
-                                        m_selectedBottomRight,
+                                        m_selectingTopLeft,
+                                        m_selectingBottomRight,
+                                        TRUE,
                                         mouseEv.ControlDown(),
                                         mouseEv.ShiftDown(),
                                         mouseEv.AltDown(),
@@ -2798,7 +5296,9 @@ bool wxGrid::SendEvent( const wxEventType type,
                              type,
                              this,
                              row, col,
-                             mouseEv.GetX(), mouseEv.GetY(),
+                             mouseEv.GetX() + GetColLabelSize(),
+                             mouseEv.GetY() + GetRowLabelSize(),
+                             FALSE,
                              mouseEv.ControlDown(),
                              mouseEv.ShiftDown(),
                              mouseEv.AltDown(),
@@ -2815,8 +5315,7 @@ bool wxGrid::SendEvent( const wxEventType type,
 bool wxGrid::SendEvent( const wxEventType type,
                         int row, int col )
 {
-    if ( type == EVT_GRID_ROW_SIZE ||
-         type == EVT_GRID_COL_SIZE )
+    if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
     {
         int rowOrCol = (row == -1 ? col : row);
 
@@ -2841,17 +5340,7 @@ bool wxGrid::SendEvent( const wxEventType type,
 
 void wxGrid::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
-    wxPaintDC dc( this );
-
-    if ( m_currentCellCoords == wxGridNoCellCoords  &&
-         m_numRows && m_numCols )
-    {
-        m_currentCellCoords.Set(0, 0);
-        SetEditControlValue();
-        ShowCellEditControl();
-    }
-
-    m_displayed = TRUE;
+    wxPaintDC dc(this);  // needed to prevent zillions of paint events on MSW
 }
 
 
@@ -2859,7 +5348,7 @@ void wxGrid::OnPaint( wxPaintEvent& WXUNUSED(event) )
 // the grid view is resized... then the size event is skipped to allow
 // the box sizers to handle everything
 //
-void wxGrid::OnSize( wxSizeEvent& event )
+void wxGrid::OnSize( wxSizeEvent& WXUNUSED(event) )
 {
     CalcWindowSizes();
     CalcDimensions();
@@ -2872,7 +5361,7 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
     {
         // shouldn't be here - we are going round in circles...
         //
-        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while alread active") );
+        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while already active") );
     }
 
     m_inOnKeyDown = TRUE;
@@ -2885,6 +5374,7 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
 
     if ( !parent->GetEventHandler()->ProcessEvent( keyEvt ) )
     {
+
         // try local handlers
         //
         switch ( event.KeyCode() )
@@ -2892,66 +5382,98 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
             case WXK_UP:
                 if ( event.ControlDown() )
                 {
-                    MoveCursorUpBlock();
+                    MoveCursorUpBlock( event.ShiftDown() );
                 }
                 else
                 {
-                    MoveCursorUp();
+                    MoveCursorUp( event.ShiftDown() );
                 }
                 break;
 
             case WXK_DOWN:
                 if ( event.ControlDown() )
                 {
-                    MoveCursorDownBlock();
+                    MoveCursorDownBlock( event.ShiftDown() );
                 }
                 else
                 {
-                    MoveCursorDown();
+                    MoveCursorDown( event.ShiftDown() );
                 }
                 break;
 
             case WXK_LEFT:
                 if ( event.ControlDown() )
                 {
-                    MoveCursorLeftBlock();
+                    MoveCursorLeftBlock( event.ShiftDown() );
                 }
                 else
                 {
-                    MoveCursorLeft();
+                    MoveCursorLeft( event.ShiftDown() );
                 }
                 break;
 
             case WXK_RIGHT:
                 if ( event.ControlDown() )
                 {
-                    MoveCursorRightBlock();
+                    MoveCursorRightBlock( event.ShiftDown() );
                 }
                 else
                 {
-                    MoveCursorRight();
+                    MoveCursorRight( event.ShiftDown() );
                 }
                 break;
 
-            case WXK_SPACE:
-                if ( !IsEditable() )
+            case WXK_RETURN:
+            case WXK_NUMPAD_ENTER:
+                if ( event.ControlDown() )
                 {
-                    MoveCursorRight();
+                    event.Skip();  // to let the edit control have the return
                 }
                 else
                 {
-                    event.Skip();
+                    if ( GetGridCursorRow() < GetNumberRows()-1 )
+                    {
+                        MoveCursorDown( event.ShiftDown() );
+                    }
+                    else
+                    {
+                        // at the bottom of a column
+                        HideCellEditControl();
+                        SaveEditControlValue();
+                    }
                 }
                 break;
 
-            case WXK_RETURN:
-                if ( event.ControlDown() )
+            case WXK_ESCAPE:
+                ClearSelection();
+                break;
+
+            case WXK_TAB:
+                if (event.ShiftDown())
                 {
-                    event.Skip();  // to let the edit control have the return
+                    if ( GetGridCursorCol() > 0 )
+                    {
+                        MoveCursorLeft( FALSE );
+                    }
+                    else
+                    {
+                        // at left of grid
+                        HideCellEditControl();
+                        SaveEditControlValue();
+                    }
                 }
                 else
                 {
-                    MoveCursorDown();
+                    if ( GetGridCursorCol() < GetNumberCols()-1 )
+                    {
+                        MoveCursorRight( FALSE );
+                    }
+                    else
+                    {
+                        // at right of grid
+                        HideCellEditControl();
+                        SaveEditControlValue();
+                    }
                 }
                 break;
 
@@ -2987,13 +5509,55 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
                 MovePageDown();
                 break;
 
+            case WXK_SPACE:
+                if ( event.ControlDown() )
+                {
+                    m_selection->ToggleCellSelection( m_currentCellCoords.GetRow(),
+                                                      m_currentCellCoords.GetCol(),
+                                                      event.ControlDown(),
+                                                      event.ShiftDown(),
+                                                      event.AltDown(),
+                                                      event.MetaDown() );
+                    break;
+                }
+                if ( !IsEditable() )
+                {
+                    MoveCursorRight( FALSE );
+                    break;
+                }
+                // Otherwise fall through to default
+
             default:
-                // now try the cell edit control
-                //
-                if ( IsCellEditControlEnabled() )
+                // is it possible to edit the current cell at all?
+                if ( !IsCellEditControlEnabled() && CanEnableCellControl() )
+                {
+                    // yes, now check whether the cells editor accepts the key
+                    int row = m_currentCellCoords.GetRow();
+                    int col = m_currentCellCoords.GetCol();
+                    wxGridCellAttr* attr = GetCellAttr(row, col);
+                    wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+
+                    // <F2> is special and will always start editing, for
+                    // other keys - ask the editor itself
+                    if ( (event.KeyCode() == WXK_F2 && !event.HasModifiers())
+                         || editor->IsAcceptedKey(event) )
+                    {
+                        EnableCellEditControl();
+                        editor->StartingKey(event);
+                    }
+                    else
+                    {
+                        event.Skip();
+                    }
+
+                    editor->DecRef();
+                    attr->DecRef();
+                }
+                else
                 {
-                    event.SetEventObject( m_cellEditCtrl );
-                    m_cellEditCtrl->GetEventHandler()->ProcessEvent( event );
+                    // let others process char events with modifiers or all
+                    // char events for readonly cells
+                    event.Skip();
                 }
                 break;
         }
@@ -3002,37 +5566,210 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
     m_inOnKeyDown = FALSE;
 }
 
+void wxGrid::OnKeyUp( wxKeyEvent& event )
+{
+    // try local handlers
+    //
+    if ( event.KeyCode() == WXK_SHIFT )
+    {
+        if ( m_selectingTopLeft != wxGridNoCellCoords &&
+             m_selectingBottomRight != wxGridNoCellCoords )
+            m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
+                                      m_selectingTopLeft.GetCol(),
+                                      m_selectingBottomRight.GetRow(),
+                                      m_selectingBottomRight.GetCol(),
+                                      event.ControlDown(),
+                                      TRUE,
+                                      event.AltDown(),
+                                      event.MetaDown() );
+        m_selectingTopLeft = wxGridNoCellCoords;
+        m_selectingBottomRight = wxGridNoCellCoords;
+        m_selectingKeyboard = wxGridNoCellCoords;
+    }
+}
+
+void wxGrid::OnEraseBackground(wxEraseEvent&)
+{
+}
 
 void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
 {
-    if ( SendEvent( EVT_GRID_SELECT_CELL, coords.GetRow(), coords.GetCol() ) )
+    if ( SendEvent( wxEVT_GRID_SELECT_CELL, coords.GetRow(), coords.GetCol() ) )
     {
         // the event has been intercepted - do nothing
         return;
     }
 
-    if ( m_displayed  &&
-         m_currentCellCoords != wxGridNoCellCoords )
+    wxClientDC dc(m_gridWin);
+    PrepareDC(dc);
+
+    if ( m_currentCellCoords != wxGridNoCellCoords )
     {
         HideCellEditControl();
-        SaveEditControlValue();
+        DisableCellEditControl();
+
+        if ( IsVisible( m_currentCellCoords, FALSE ) )
+        {
+            wxRect r;
+            r = BlockToDeviceRect(m_currentCellCoords, m_currentCellCoords);
+            if ( !m_gridLinesEnabled )
+            {
+                r.x--;
+                r.y--;
+                r.width++;
+                r.height++;
+            }
+
+            CalcCellsExposed( r );
+
+            // Otherwise refresh redraws the highlight!
+            m_currentCellCoords = coords;
+
+            DrawGridCellArea(dc);
+            DrawAllGridLines( dc, r );
+        }
     }
 
     m_currentCellCoords = coords;
 
-    SetEditControlValue();
+    wxGridCellAttr* attr = GetCellAttr(coords);
+    DrawCellHighlight(dc, attr);
+    attr->DecRef();
+}
+
+
+void wxGrid::HighlightBlock( int topRow, int leftCol, int bottomRow, int rightCol )
+{
+    int temp;
+    wxGridCellCoords updateTopLeft, updateBottomRight;
 
-    if ( m_displayed )
+    if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectRows )
     {
-        ShowCellEditControl();
+        leftCol = 0;
+        rightCol = GetNumberCols() - 1;
+    }
+    else if ( m_selection->GetSelectionMode() == wxGrid::wxGridSelectColumns )
+    {
+        topRow = 0;
+        bottomRow = GetNumberRows() - 1;
+    }
+    if ( topRow > bottomRow )
+    {
+        temp = topRow;
+        topRow = bottomRow;
+        bottomRow = temp;
+    }
+
+    if ( leftCol > rightCol )
+    {
+        temp = leftCol;
+        leftCol = rightCol;
+        rightCol = temp;
+    }
+
+    updateTopLeft = wxGridCellCoords( topRow, leftCol );
+    updateBottomRight = wxGridCellCoords( bottomRow, rightCol );
+
+    if ( m_selectingTopLeft != updateTopLeft ||
+         m_selectingBottomRight != updateBottomRight )
+    {
+        // Compute two optimal update rectangles:
+        // Either one rectangle is a real subset of the
+        // other, or they are (almost) disjoint!
+        wxRect  rect[4];
+        bool    need_refresh[4];
+        need_refresh[0] =
+        need_refresh[1] =
+        need_refresh[2] =
+        need_refresh[3] = FALSE;
+        int     i;
+
+        // Store intermediate values
+        wxCoord oldLeft   = m_selectingTopLeft.GetCol();
+        wxCoord oldTop    = m_selectingTopLeft.GetRow();
+        wxCoord oldRight  = m_selectingBottomRight.GetCol();
+        wxCoord oldBottom = m_selectingBottomRight.GetRow();
+
+        // Determine the outer/inner coordinates.
+        if (oldLeft > leftCol)
+        {
+            temp = oldLeft;
+            oldLeft = leftCol;
+            leftCol = temp;
+        }
+        if (oldTop > topRow )
+        {
+            temp = oldTop;
+            oldTop = topRow;
+            topRow = temp;
+        }
+        if (oldRight < rightCol )
+        {
+            temp = oldRight;
+            oldRight = rightCol;
+            rightCol = temp;
+        }
+        if (oldBottom < bottomRow)
+        {
+            temp = oldBottom;
+            oldBottom = bottomRow;
+            bottomRow = temp;
+        }
+
+        // Now, either the stuff marked old is the outer
+        // rectangle or we don't have a situation where one
+        // is contained in the other.
+
+        if ( oldLeft < leftCol )
+        {
+            need_refresh[0] = TRUE;
+            rect[0] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
+                                                            oldLeft ),
+                                         wxGridCellCoords ( oldBottom,
+                                                            leftCol - 1 ) );
+        }
+
+        if ( oldTop  < topRow )
+        {
+            need_refresh[1] = TRUE;
+            rect[1] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
+                                                            leftCol ),
+                                         wxGridCellCoords ( topRow - 1,
+                                                            rightCol ) );
+        }
+
+        if ( oldRight > rightCol )
+        {
+            need_refresh[2] = TRUE;
+            rect[2] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
+                                                            rightCol + 1 ),
+                                         wxGridCellCoords ( oldBottom,
+                                                            oldRight ) );
+        }
+
+        if ( oldBottom > bottomRow )
+        {
+            need_refresh[3] = TRUE;
+            rect[3] = BlockToDeviceRect( wxGridCellCoords ( bottomRow + 1,
+                                                            leftCol ),
+                                         wxGridCellCoords ( oldBottom,
+                                                            rightCol ) );
+        }
+
+
+        // Change Selection
+        m_selectingTopLeft = updateTopLeft;
+        m_selectingBottomRight = updateBottomRight;
 
-        if ( IsSelection() )
-        {
-            wxRect r( SelectionToDeviceRect() );
-            ClearSelection();
-            if ( !GetBatchCount() ) m_gridWin->Refresh( FALSE, &r );
-        }
+        // various Refresh() calls
+        for (i = 0; i < 4; i++ )
+            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
+                m_gridWin->Refresh( FALSE, &(rect[i]) );
     }
+
+    // never generate an event as it will be generated from
+    // wxGridSelection::SelectBlock!
+    // (old comment from when this was the body of SelectBlock)
 }
 
 
@@ -3094,119 +5831,177 @@ void wxGrid::DrawGridCellArea( wxDC& dc )
 }
 
 
-void wxGrid::DrawCell( wxDC& dc, const wxGridCellCoords& coords )
+void wxGrid::DrawGridSpace( wxDC& dc )
 {
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
+  int cw, ch;
+  m_gridWin->GetClientSize( &cw, &ch );
 
-#if !WXGRID_DRAW_LINES
-    if ( m_gridLinesEnabled )
-        DrawCellBorder( dc, coords );
-#endif
+  int right, bottom;
+  CalcUnscrolledPosition( cw, ch, &right, &bottom );
 
-    DrawCellBackground( dc, coords );
+  int rightCol = m_numCols > 0 ? GetColRight(m_numCols - 1) : 0;
+  int bottomRow = m_numRows > 0 ? GetRowBottom(m_numRows - 1) : 0 ;
 
-    // TODO: separate functions here for different kinds of cells ?
-    // e.g. text, image
-    //
-    DrawCellValue( dc, coords );
+  if ( right > rightCol || bottom > bottomRow )
+  {
+      int left, top;
+      CalcUnscrolledPosition( 0, 0, &left, &top );
+
+      dc.SetBrush( wxBrush(GetDefaultCellBackgroundColour(), wxSOLID) );
+      dc.SetPen( *wxTRANSPARENT_PEN );
+
+      if ( right > rightCol )
+      {
+          dc.DrawRectangle( rightCol, top, right - rightCol, ch);
+      }
+
+      if ( bottom > bottomRow )
+      {
+          dc.DrawRectangle( left, bottomRow, cw, bottom - bottomRow);
+      }
+  }
 }
 
 
-void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
+void wxGrid::DrawCell( wxDC& dc, const wxGridCellCoords& coords )
 {
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
-
-    dc.SetPen( wxPen(GetGridLineColour(), 1, wxSOLID) );
     int row = coords.GetRow();
     int col = coords.GetCol();
 
-    // right hand border
-    //
-    dc.DrawLine( m_colRights[col], m_rowBottoms[row] - m_rowHeights[row],
-                 m_colRights[col], m_rowBottoms[row] );
-
-    // bottom border
-    //
-    dc.DrawLine( m_colRights[col] - m_colWidths[col], m_rowBottoms[row],
-                 m_colRights[col], m_rowBottoms[row] );
-}
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
 
+    // we draw the cell border ourselves
+#if !WXGRID_DRAW_LINES
+    if ( m_gridLinesEnabled )
+        DrawCellBorder( dc, coords );
+#endif
 
-void wxGrid::DrawCellBackground( wxDC& dc, const wxGridCellCoords& coords )
-{
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
+    wxGridCellAttr* attr = GetCellAttr(row, col);
 
-    int row = coords.GetRow();
-    int col = coords.GetCol();
+    bool isCurrent = coords == m_currentCellCoords;
 
-    dc.SetBackgroundMode( wxSOLID );
+    wxRect rect = CellToRect( row, col );
 
-    if ( IsInSelection( coords ) )
+    // if the editor is shown, we should use it and not the renderer
+    // Note: However, only if it is really _shown_, i.e. not hidden!
+    if ( isCurrent && IsCellEditControlShown() )
     {
-        // TODO: improve this
-        //
-        dc.SetBrush( *wxBLACK_BRUSH );
+        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+        editor->PaintBackground(rect, attr);
+        editor->DecRef();
     }
     else
     {
-        dc.SetBrush( wxBrush(GetCellBackgroundColour(row, col), wxSOLID) );
+        // but all the rest is drawn by the cell renderer and hence may be
+        // customized
+        wxGridCellRenderer *renderer = attr->GetRenderer(this, row, col);
+        renderer->Draw(*this, *attr, dc, rect, row, col, IsInSelection(coords));
+        renderer->DecRef();
     }
 
-    dc.SetPen( *wxTRANSPARENT_PEN );
+    attr->DecRef();
+}
+
+void wxGrid::DrawCellHighlight( wxDC& dc, const wxGridCellAttr *attr )
+{
+    int row = m_currentCellCoords.GetRow();
+    int col = m_currentCellCoords.GetCol();
+
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
+
+    wxRect rect = CellToRect(row, col);
+
+    // hmmm... what could we do here to show that the cell is disabled?
+    // for now, I just draw a thinner border than for the other ones, but
+    // it doesn't look really good
+    dc.SetPen(wxPen(m_cellHighlightColour, attr->IsReadOnly() ? 1 : 3, wxSOLID));
+    dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+    dc.DrawRectangle(rect);
 
-    dc.DrawRectangle( m_colRights[col] - m_colWidths[col] + 1,
-                      m_rowBottoms[row] - m_rowHeights[row] + 1,
-                      m_colWidths[col]-1,
-                      m_rowHeights[row]-1 );
+#if 0
+        // VZ: my experiments with 3d borders...
+
+        // how to properly set colours for arbitrary bg?
+        wxCoord x1 = rect.x,
+                y1 = rect.y,
+                x2 = rect.x + rect.width -1,
+                y2 = rect.y + rect.height -1;
+
+        dc.SetPen(*wxWHITE_PEN);
+        dc.DrawLine(x1, y1, x2, y1);
+        dc.DrawLine(x1, y1, x1, y2);
+
+        dc.DrawLine(x1 + 1, y2 - 1, x2 - 1, y2 - 1);
+        dc.DrawLine(x2 - 1, y1 + 1, x2 - 1, y2 );
+
+        dc.SetPen(*wxBLACK_PEN);
+        dc.DrawLine(x1, y2, x2, y2);
+        dc.DrawLine(x2, y1, x2, y2+1);
+#endif // 0
 }
 
 
-void wxGrid::DrawCellValue( wxDC& dc, const wxGridCellCoords& coords )
+void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
 {
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
-
     int row = coords.GetRow();
     int col = coords.GetCol();
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
 
-    dc.SetBackgroundMode( wxTRANSPARENT );
+    dc.SetPen( wxPen(GetGridLineColour(), 1, wxSOLID) );
+
+    // right hand border
+    //
+    dc.DrawLine( GetColRight(col), GetRowTop(row),
+                 GetColRight(col), GetRowBottom(row) );
+
+    // bottom border
+    //
+    dc.DrawLine( GetColLeft(col), GetRowBottom(row),
+                 GetColRight(col), GetRowBottom(row) );
+}
 
-    if ( IsInSelection( row, col ) )
+void wxGrid::DrawHighlight(wxDC& dc)
+{
+    // This if block was previously in wxGrid::OnPaint but that doesn't
+    // seem to get called under wxGTK - MB
+    //
+    if ( m_currentCellCoords == wxGridNoCellCoords  &&
+         m_numRows && m_numCols )
     {
-        // TODO: improve this
-        //
-        dc.SetTextBackground( wxColour(0, 0, 0) );
-        dc.SetTextForeground( wxColour(255, 255, 255) );
+        m_currentCellCoords.Set(0, 0);
     }
-    else
+
+    if ( IsCellEditControlShown() )
     {
-        dc.SetTextBackground( GetCellBackgroundColour(row, col) );
-        dc.SetTextForeground( GetCellTextColour(row, col) );
+        // don't show highlight when the edit control is shown
+        return;
     }
-    dc.SetFont( GetCellFont(row, col) );
-
-    int hAlign, vAlign;
-    GetCellAlignment( row, col, &hAlign, &vAlign );
 
-    wxRect rect;
-    rect.SetX( m_colRights[col] - m_colWidths[col] + 2 );
-    rect.SetY( m_rowBottoms[row] - m_rowHeights[row] + 2 );
-    rect.SetWidth( m_colWidths[col] - 4 );
-    rect.SetHeight( m_rowHeights[row] - 4 );
+    // if the active cell was repainted, repaint its highlight too because it
+    // might have been damaged by the grid lines
+    size_t count = m_cellsExposed.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        if ( m_cellsExposed[n] == m_currentCellCoords )
+        {
+            wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+            DrawCellHighlight(dc, attr);
+            attr->DecRef();
 
-    DrawTextRectangle( dc, GetCellValue( row, col ), rect, hAlign, vAlign );
+            break;
+        }
+    }
 }
 
-
-
 // TODO: remove this ???
 // This is used to redraw all grid lines e.g. when the grid line colour
 // has been changed
 //
-void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
+void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED_GTK(reg) )
 {
     if ( !m_gridLinesEnabled ||
          !m_numRows ||
@@ -3214,7 +6009,9 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
 
     int top, bottom, left, right;
 
-    if (reg.IsEmpty()){
+#if 0  //#ifndef __WXGTK__
+    if (reg.IsEmpty())
+    {
       int cw, ch;
       m_gridWin->GetClientSize(&cw, &ch);
 
@@ -3223,17 +6020,24 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
       CalcUnscrolledPosition( 0, 0, &left, &top );
       CalcUnscrolledPosition( cw, ch, &right, &bottom );
     }
-    else{
+    else
+    {
       wxCoord x, y, w, h;
       reg.GetBox(x, y, w, h);
       CalcUnscrolledPosition( x, y, &left, &top );
       CalcUnscrolledPosition( x + w, y + h, &right, &bottom );
     }
+#else
+      int cw, ch;
+      m_gridWin->GetClientSize(&cw, &ch);
+      CalcUnscrolledPosition( 0, 0, &left, &top );
+      CalcUnscrolledPosition( cw, ch, &right, &bottom );
+#endif
 
     // avoid drawing grid lines past the last row and col
     //
-    right = wxMin( right, m_colRights[m_numCols-1] );
-    bottom = wxMin( bottom, m_rowBottoms[m_numRows-1] );
+    right = wxMin( right, GetColRight(m_numCols - 1) );
+    bottom = wxMin( bottom, GetRowBottom(m_numRows - 1) );
 
     dc.SetPen( wxPen(GetGridLineColour(), 1, wxSOLID) );
 
@@ -3242,13 +6046,16 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
     int i;
     for ( i = 0; i < m_numRows; i++ )
     {
-        if ( m_rowBottoms[i] > bottom )
+        int bot = GetRowBottom(i) - 1;
+
+        if ( bot > bottom )
         {
             break;
         }
-        else if ( m_rowBottoms[i] >= top )
+
+        if ( bot >= top )
         {
-            dc.DrawLine( left, m_rowBottoms[i], right, m_rowBottoms[i] );
+            dc.DrawLine( left, bot, right, bot );
         }
     }
 
@@ -3257,13 +6064,15 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
     //
     for ( i = 0; i < m_numCols; i++ )
     {
-        if ( m_colRights[i] > right )
+        int colRight = GetColRight(i) - 1;
+        if ( colRight > right )
         {
             break;
         }
-        else if ( m_colRights[i] >= left )
+
+        if ( colRight >= left )
         {
-            dc.DrawLine( m_colRights[i], top, m_colRights[i], bottom );
+            dc.DrawLine( colRight, top, colRight, bottom );
         }
     }
 }
@@ -3271,7 +6080,7 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
 
 void wxGrid::DrawRowLabels( wxDC& dc )
 {
-    if ( !m_numRows || !m_numCols ) return;
+    if ( !m_numRows ) return;
 
     size_t i;
     size_t numLabels = m_rowLabelsExposed.GetCount();
@@ -3285,19 +6094,20 @@ void wxGrid::DrawRowLabels( wxDC& dc )
 
 void wxGrid::DrawRowLabel( wxDC& dc, int row )
 {
-    if ( m_rowHeights[row] <= 0 ) return;
+    if ( GetRowHeight(row) <= 0 )
+        return;
 
-    int rowTop = m_rowBottoms[row] - m_rowHeights[row];
+    int rowTop = GetRowTop(row),
+        rowBottom = GetRowBottom(row) - 1;
 
     dc.SetPen( *wxBLACK_PEN );
     dc.DrawLine( m_rowLabelWidth-1, rowTop,
-                 m_rowLabelWidth-1, m_rowBottoms[row]-1 );
+                 m_rowLabelWidth-1, rowBottom );
 
-    dc.DrawLine( 0, m_rowBottoms[row]-1,
-                 m_rowLabelWidth-1, m_rowBottoms[row]-1 );
+    dc.DrawLine( 0, rowBottom, m_rowLabelWidth-1, rowBottom );
 
     dc.SetPen( *wxWHITE_PEN );
-    dc.DrawLine( 0, rowTop, 0, m_rowBottoms[row]-1 );
+    dc.DrawLine( 0, rowTop, 0, rowBottom );
     dc.DrawLine( 0, rowTop, m_rowLabelWidth-1, rowTop );
 
     dc.SetBackgroundMode( wxTRANSPARENT );
@@ -3309,16 +6119,16 @@ void wxGrid::DrawRowLabel( wxDC& dc, int row )
 
     wxRect rect;
     rect.SetX( 2 );
-    rect.SetY( m_rowBottoms[row] - m_rowHeights[row] + 2 );
+    rect.SetY( GetRowTop(row) + 2 );
     rect.SetWidth( m_rowLabelWidth - 4 );
-    rect.SetHeight( m_rowHeights[row] - 4 );
+    rect.SetHeight( GetRowHeight(row) - 4 );
     DrawTextRectangle( dc, GetRowLabelValue( row ), rect, hAlign, vAlign );
 }
 
 
 void wxGrid::DrawColLabels( wxDC& dc )
 {
-    if ( !m_numRows || !m_numCols ) return;
+    if ( !m_numCols ) return;
 
     size_t i;
     size_t numLabels = m_colLabelsExposed.GetCount();
@@ -3332,20 +6142,22 @@ void wxGrid::DrawColLabels( wxDC& dc )
 
 void wxGrid::DrawColLabel( wxDC& dc, int col )
 {
-    if ( m_colWidths[col] <= 0 ) return;
+    if ( GetColWidth(col) <= 0 )
+        return;
 
-    int colLeft = m_colRights[col] - m_colWidths[col];
+    int colLeft = GetColLeft(col),
+        colRight = GetColRight(col) - 1;
 
     dc.SetPen( *wxBLACK_PEN );
-    dc.DrawLine( m_colRights[col]-1, 0,
-                 m_colRights[col]-1, m_colLabelHeight-1 );
+    dc.DrawLine( colRight, 0,
+                 colRight, m_colLabelHeight-1 );
 
     dc.DrawLine( colLeft, m_colLabelHeight-1,
-                 m_colRights[col]-1, m_colLabelHeight-1 );
+                 colRight, m_colLabelHeight-1 );
 
     dc.SetPen( *wxWHITE_PEN );
     dc.DrawLine( colLeft, 0, colLeft, m_colLabelHeight-1 );
-    dc.DrawLine( colLeft, 0, m_colRights[col]-1, 0 );
+    dc.DrawLine( colLeft, 0, colRight, 0 );
 
     dc.SetBackgroundMode( wxTRANSPARENT );
     dc.SetTextForeground( GetLabelTextColour() );
@@ -3359,9 +6171,9 @@ void wxGrid::DrawColLabel( wxDC& dc, int col )
     GetColLabelAlignment( &hAlign, &vAlign );
 
     wxRect rect;
-    rect.SetX( m_colRights[col] - m_colWidths[col] + 2 );
+    rect.SetX( colLeft + 2 );
     rect.SetY( 2 );
-    rect.SetWidth( m_colWidths[col] - 4 );
+    rect.SetWidth( GetColWidth(col) - 4 );
     rect.SetHeight( m_colLabelHeight - 4 );
     DrawTextRectangle( dc, GetColLabelValue( col ), rect, hAlign, vAlign );
 }
@@ -3387,15 +6199,15 @@ void wxGrid::DrawTextRectangle( wxDC& dc,
         float x, y;
         switch ( horizAlign )
         {
-            case wxRIGHT:
+            case wxALIGN_RIGHT:
                 x = rect.x + (rect.width - textWidth - 1);
                 break;
 
-            case wxCENTRE:
+            case wxALIGN_CENTRE:
                 x = rect.x + ((rect.width - textWidth)/2);
                 break;
 
-            case wxLEFT:
+            case wxALIGN_LEFT:
             default:
                 x = rect.x + 1;
                 break;
@@ -3403,15 +6215,15 @@ void wxGrid::DrawTextRectangle( wxDC& dc,
 
         switch ( vertAlign )
         {
-            case wxBOTTOM:
+            case wxALIGN_BOTTOM:
                 y = rect.y + (rect.height - textHeight - 1);
                 break;
 
-            case wxCENTRE:
+            case wxALIGN_CENTRE:
                 y = rect.y + ((rect.height - textHeight)/2);
                 break;
 
-            case wxTOP:
+            case wxALIGN_TOP:
             default:
                 y = rect.y + 1;
                 break;
@@ -3419,7 +6231,7 @@ void wxGrid::DrawTextRectangle( wxDC& dc,
 
         for ( size_t i = 0;  i < lines.GetCount();  i++ )
         {
-            dc.DrawText( lines[i], (long)x, (long)y );
+            dc.DrawText( lines[i], (int)x, (int)y );
             y += lineHeight;
         }
     }
@@ -3482,6 +6294,35 @@ void wxGrid::GetTextBoxSize( wxDC& dc,
     *height = h;
 }
 
+//
+// ------ Batch processing.
+//
+void wxGrid::EndBatch()
+{
+    if ( m_batchCount > 0 )
+    {
+        m_batchCount--;
+        if ( !m_batchCount )
+        {
+            CalcDimensions();
+            m_rowLabelWin->Refresh();
+            m_colLabelWin->Refresh();
+            m_cornerLabelWin->Refresh();
+            m_gridWin->Refresh();
+        }
+    }
+}
+
+// Use this, rather than wxWindow::Refresh(), to force an immediate
+// repainting of the grid. Has no effect if you are already inside a
+// BeginBatch / EndBatch block.
+//
+void wxGrid::ForceRefresh()
+{
+    BeginBatch();
+    EndBatch();
+}
+
 
 //
 // ------ Edit control functions
@@ -3494,133 +6335,146 @@ void wxGrid::EnableEditing( bool edit )
     //
     if ( edit != m_editable )
     {
+        if(!edit) EnableCellEditControl(edit);
         m_editable = edit;
-
-        // TODO: extend this for other edit control types
-        //
-        if ( m_editCtrlType == wxGRID_TEXTCTRL )
-        {
-            ((wxTextCtrl *)m_cellEditCtrl)->SetEditable( m_editable );
-        }
     }
 }
 
 
-#if 0  // disabled for the moment - the cell control is always active
 void wxGrid::EnableCellEditControl( bool enable )
 {
-    if ( m_cellEditCtrl &&
-         enable != m_cellEditCtrlEnabled )
+    if (! m_editable)
+        return;
+
+    if ( m_currentCellCoords == wxGridNoCellCoords )
+        SetCurrentCell( 0, 0 );
+
+    if ( enable != m_cellEditCtrlEnabled )
     {
-        m_cellEditCtrlEnabled = enable;
+        // TODO allow the app to Veto() this event?
+        SendEvent(enable ? wxEVT_GRID_EDITOR_SHOWN : wxEVT_GRID_EDITOR_HIDDEN);
 
-        if ( m_cellEditCtrlEnabled )
+        if ( enable )
         {
-            SetEditControlValue();
+            // this should be checked by the caller!
+            wxASSERT_MSG( CanEnableCellControl(),
+                          _T("can't enable editing for this cell!") );
+
+            // do it before ShowCellEditControl()
+            m_cellEditCtrlEnabled = enable;
+
             ShowCellEditControl();
         }
         else
         {
             HideCellEditControl();
             SaveEditControlValue();
+
+            // do it after HideCellEditControl()
+            m_cellEditCtrlEnabled = enable;
         }
     }
 }
-#endif
 
+bool wxGrid::IsCurrentCellReadOnly() const
+{
+    // const_cast
+    wxGridCellAttr* attr = ((wxGrid *)this)->GetCellAttr(m_currentCellCoords);
+    bool readonly = attr->IsReadOnly();
+    attr->DecRef();
 
-void wxGrid::ShowCellEditControl()
+    return readonly;
+}
+
+bool wxGrid::CanEnableCellControl() const
 {
-    wxRect rect;
+    return m_editable && !IsCurrentCellReadOnly();
+}
+
+bool wxGrid::IsCellEditControlEnabled() const
+{
+    // the cell edit control might be disable for all cells or just for the
+    // current one if it's read only
+    return m_cellEditCtrlEnabled ? !IsCurrentCellReadOnly() : FALSE;
+}
+
+bool wxGrid::IsCellEditControlShown() const
+{
+    bool isShown = FALSE;
+
+    if ( m_cellEditCtrlEnabled )
+    {
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellEditor* editor = attr->GetEditor((wxGrid*) this, row, col);
+        attr->DecRef();
+
+        if ( editor )
+        {
+            if ( editor->IsCreated() )
+            {
+                isShown = editor->GetControl()->IsShown();
+            }
+
+            editor->DecRef();
+        }
+    }
+
+    return isShown;
+}
 
+void wxGrid::ShowCellEditControl()
+{
     if ( IsCellEditControlEnabled() )
     {
         if ( !IsVisible( m_currentCellCoords ) )
         {
+            m_cellEditCtrlEnabled = FALSE;
             return;
         }
         else
         {
-            rect = CellToRect( m_currentCellCoords );
+            wxRect rect = CellToRect( m_currentCellCoords );
+            int row = m_currentCellCoords.GetRow();
+            int col = m_currentCellCoords.GetCol();
 
             // convert to scrolled coords
             //
-            int left, top, right, bottom;
-            CalcScrolledPosition( rect.GetLeft(), rect.GetTop(), &left, &top );
-            CalcScrolledPosition( rect.GetRight(), rect.GetBottom(), &right, &bottom );
-
-            int cw, ch;
-            m_gridWin->GetClientSize( &cw, &ch );
-
-            // Make the edit control large enough to allow for internal margins
-            // TODO: remove this if the text ctrl sizing is improved esp. for unix
-            //
-            int extra;
-#if defined(__WXMOTIF__)
-            if ( m_currentCellCoords.GetRow() == 0  ||
-                 m_currentCellCoords.GetCol() == 0 )
-            {
-                extra = 2;
-            }
-            else
-            {
-                extra = 4;
-            }
-#else
-            if ( m_currentCellCoords.GetRow() == 0  ||
-                 m_currentCellCoords.GetCol() == 0 )
-            {
-                extra = 1;
-            }
-            else
-            {
-                extra = 2;
-            }
-#endif
+            CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
 
-#if defined(__WXGTK__)
-            int top_diff = 0;
-            int left_diff = 0;
-            if (left != 0) left_diff++;
-            if (top != 0) top_diff++;
-            rect.SetLeft( left + left_diff );
-            rect.SetTop( top + top_diff );
-            rect.SetRight( rect.GetRight() - left_diff );
-            rect.SetBottom( rect.GetBottom() - top_diff );
-#else
-            rect.SetLeft( wxMax(0, left - extra) );
-            rect.SetTop( wxMax(0, top - extra) );
-            rect.SetRight( rect.GetRight() + 2*extra );
-            rect.SetBottom( rect.GetBottom() + 2*extra );
-#endif
+            // done in PaintBackground()
+#if 0
+            // erase the highlight and the cell contents because the editor
+            // might not cover the entire cell
+            wxClientDC dc( m_gridWin );
+            PrepareDC( dc );
+            dc.SetBrush(*wxLIGHT_GREY_BRUSH); //wxBrush(attr->GetBackgroundColour(), wxSOLID));
+            dc.SetPen(*wxTRANSPARENT_PEN);
+            dc.DrawRectangle(rect);
+#endif // 0
 
-            m_cellEditCtrl->SetSize( rect );
-            m_cellEditCtrl->Show( TRUE );
+            // cell is shifted by one pixel
+            rect.x--;
+            rect.y--;
 
-            switch ( m_editCtrlType )
+            wxGridCellAttr* attr = GetCellAttr(row, col);
+            wxGridCellEditor* editor = attr->GetEditor(this, row, col);
+            if ( !editor->IsCreated() )
             {
-                case wxGRID_TEXTCTRL:
-                    ((wxTextCtrl *) m_cellEditCtrl)->SetInsertionPointEnd();
-                    break;
+                editor->Create(m_gridWin, -1,
+                               new wxGridCellEditorEvtHandler(this, editor));
+            }
 
-                case wxGRID_CHECKBOX:
-                    // TODO: anything ???
-                    //
-                    break;
+            editor->Show( TRUE, attr );
 
-                case wxGRID_CHOICE:
-                    // TODO: anything ???
-                    //
-                    break;
+            editor->SetSize( rect );
 
-                case wxGRID_COMBOBOX:
-                    // TODO: anything ???
-                    //
-                    break;
-            }
+            editor->BeginEdit(row, col, this);
 
-            m_cellEditCtrl->SetFocus();
-        }
+            editor->DecRef();
+            attr->DecRef();
+         }
     }
 }
 
@@ -3629,94 +6483,38 @@ void wxGrid::HideCellEditControl()
 {
     if ( IsCellEditControlEnabled() )
     {
-        m_cellEditCtrl->Show( FALSE );
-    }
-}
-
-
-void wxGrid::SetEditControlValue( const wxString& value )
-{
-    if ( m_table )
-    {
-        wxString s;
-        if ( !value )
-            s = GetCellValue(m_currentCellCoords);
-        else
-            s = value;
-
-        if ( IsCellEditControlEnabled() )
-        {
-            switch ( m_editCtrlType )
-            {
-                case wxGRID_TEXTCTRL:
-                    ((wxGridTextCtrl *)m_cellEditCtrl)->SetStartValue(s);
-                    break;
-
-                case wxGRID_CHECKBOX:
-                    // TODO: implement this
-                    //
-                    break;
-
-                case wxGRID_CHOICE:
-                    // TODO: implement this
-                    //
-                    break;
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
 
-                case wxGRID_COMBOBOX:
-                    // TODO: implement this
-                    //
-                    break;
-            }
-        }
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+        editor->Show( FALSE );
+        editor->DecRef();
+        attr->DecRef();
+        m_gridWin->SetFocus();
+        wxRect rect( CellToRect( row, col ) );
+        m_gridWin->Refresh( FALSE, &rect );
     }
 }
 
 
 void wxGrid::SaveEditControlValue()
 {
-    if ( m_table )
+    if ( IsCellEditControlEnabled() )
     {
-        wxWindow *ctrl = (wxWindow *)NULL;
-
-        if ( IsCellEditControlEnabled() )
-        {
-            ctrl = m_cellEditCtrl;
-        }
-        else
-        {
-            return;
-        }
-
-        bool valueChanged = FALSE;
-
-        switch ( m_editCtrlType )
-        {
-            case wxGRID_TEXTCTRL:
-                valueChanged = (((wxGridTextCtrl *)ctrl)->GetValue() !=
-                                ((wxGridTextCtrl *)ctrl)->GetStartValue());
-                SetCellValue( m_currentCellCoords,
-                              ((wxTextCtrl *) ctrl)->GetValue() );
-                break;
-
-            case wxGRID_CHECKBOX:
-                // TODO: implement this
-                //
-                break;
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
 
-            case wxGRID_CHOICE:
-                // TODO: implement this
-                //
-                break;
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellEditor* editor = attr->GetEditor(this, row, col);
+        bool changed = editor->EndEdit(row, col, this);
 
-            case wxGRID_COMBOBOX:
-                // TODO: implement this
-                //
-                break;
-        }
+        editor->DecRef();
+        attr->DecRef();
 
-        if ( valueChanged )
+        if (changed)
         {
-            SendEvent( EVT_GRID_CELL_CHANGE,
+            SendEvent( wxEVT_GRID_CELL_CHANGE,
                        m_currentCellCoords.GetRow(),
                        m_currentCellCoords.GetCol() );
         }
@@ -3753,7 +6551,8 @@ int wxGrid::YToRow( int y )
 
     for ( i = 0;  i < m_numRows;  i++ )
     {
-        if ( y < m_rowBottoms[i] ) return i;
+        if ( y < GetRowBottom(i) )
+            return i;
     }
 
     return -1;
@@ -3766,7 +6565,8 @@ int wxGrid::XToCol( int x )
 
     for ( i = 0;  i < m_numCols;  i++ )
     {
-        if ( x < m_colRights[i] ) return i;
+        if ( x < GetColRight(i) )
+            return i;
     }
 
     return -1;
@@ -3782,12 +6582,11 @@ int wxGrid::YToEdgeOfRow( int y )
 
     for ( i = 0;  i < m_numRows;  i++ )
     {
-        if ( m_rowHeights[i] > WXGRID_LABEL_EDGE_ZONE )
+        if ( GetRowHeight(i) > WXGRID_LABEL_EDGE_ZONE )
         {
-            d = abs( y - m_rowBottoms[i] );
-            {
-                if ( d < WXGRID_LABEL_EDGE_ZONE ) return i;
-            }
+            d = abs( y - GetRowBottom(i) );
+            if ( d < WXGRID_LABEL_EDGE_ZONE )
+                return i;
         }
     }
 
@@ -3804,12 +6603,11 @@ int wxGrid::XToEdgeOfCol( int x )
 
     for ( i = 0;  i < m_numCols;  i++ )
     {
-        if ( m_colWidths[i] > WXGRID_LABEL_EDGE_ZONE )
+        if ( GetColWidth(i) > WXGRID_LABEL_EDGE_ZONE )
         {
-            d = abs( x - m_colRights[i] );
-            {
-                if ( d < WXGRID_LABEL_EDGE_ZONE ) return i;
-            }
+            d = abs( x - GetColRight(i) );
+            if ( d < WXGRID_LABEL_EDGE_ZONE )
+                return i;
         }
     }
 
@@ -3824,12 +6622,17 @@ wxRect wxGrid::CellToRect( int row, int col )
     if ( row >= 0  &&  row < m_numRows  &&
          col >= 0  &&  col < m_numCols )
     {
-        rect.x = m_colRights[col] - m_colWidths[col];
-        rect.y = m_rowBottoms[row] - m_rowHeights[row];
-        rect.width = m_colWidths[col];
-        rect.height = m_rowHeights[ row ];
+        rect.x = GetColLeft(col);
+        rect.y = GetRowTop(row);
+        rect.width = GetColWidth(col);
+        rect.height = GetRowHeight(row);
     }
 
+    // if grid lines are enabled, then the area of the cell is a bit smaller
+    if (m_gridLinesEnabled) {
+        rect.width -= 1;
+        rect.height -= 1;
+    }
     return rect;
 }
 
@@ -3902,10 +6705,12 @@ void wxGrid::MakeCellVisible( int row, int col )
             ypos = r.GetTop();
             for ( i = row-1;  i >= 0;  i-- )
             {
-                if ( h + m_rowHeights[i] > ch ) break;
+                int rowHeight = GetRowHeight(i);
+                if ( h + rowHeight > ch )
+                    break;
 
-                h += m_rowHeights[i];
-                ypos -= m_rowHeights[i];
+                h += rowHeight;
+                ypos -= rowHeight;
             }
 
             // we divide it later by GRID_SCROLL_LINE, make sure that we don't
@@ -3924,10 +6729,12 @@ void wxGrid::MakeCellVisible( int row, int col )
             xpos = r.GetLeft();
             for ( i = col-1;  i >= 0;  i-- )
             {
-                if ( w + m_colWidths[i] > cw ) break;
+                int colWidth = GetColWidth(i);
+                if ( w + colWidth > cw )
+                    break;
 
-                w += m_colWidths[i];
-                xpos -= m_colWidths[i];
+                w += colWidth;
+                xpos -= colWidth;
             }
 
             // see comment for ypos above
@@ -3949,17 +6756,33 @@ void wxGrid::MakeCellVisible( int row, int col )
 // ------ Grid cursor movement functions
 //
 
-bool wxGrid::MoveCursorUp()
+bool wxGrid::MoveCursorUp( bool expandSelection )
 {
     if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() > 0 )
+         m_currentCellCoords.GetRow() >= 0 )
     {
-        MakeCellVisible( m_currentCellCoords.GetRow() - 1,
-                        m_currentCellCoords.GetCol() );
-
-        SetCurrentCell( m_currentCellCoords.GetRow() - 1,
-                        m_currentCellCoords.GetCol() );
-
+        if ( expandSelection)
+        {
+            if ( m_selectingKeyboard == wxGridNoCellCoords )
+                m_selectingKeyboard = m_currentCellCoords;
+            if ( m_selectingKeyboard.GetRow() > 0 )
+            {
+                m_selectingKeyboard.SetRow( m_selectingKeyboard.GetRow() - 1 );
+                MakeCellVisible( m_selectingKeyboard.GetRow(),
+                                 m_selectingKeyboard.GetCol() );
+                HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+            }
+        }
+        else if ( m_currentCellCoords.GetRow() > 0 )
+        {
+            ClearSelection();
+            MakeCellVisible( m_currentCellCoords.GetRow() - 1,
+                             m_currentCellCoords.GetCol() );
+            SetCurrentCell( m_currentCellCoords.GetRow() - 1,
+                            m_currentCellCoords.GetCol() );
+        }
+        else
+            return FALSE;
         return TRUE;
     }
 
@@ -3967,19 +6790,33 @@ bool wxGrid::MoveCursorUp()
 }
 
 
-bool wxGrid::MoveCursorDown()
+bool wxGrid::MoveCursorDown( bool expandSelection )
 {
-    // TODO: allow for scrolling
-    //
     if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() < m_numRows-1 )
+         m_currentCellCoords.GetRow() < m_numRows )
     {
-        MakeCellVisible( m_currentCellCoords.GetRow() + 1,
-                        m_currentCellCoords.GetCol() );
-
-        SetCurrentCell( m_currentCellCoords.GetRow() + 1,
-                        m_currentCellCoords.GetCol() );
-
+        if ( expandSelection )
+        {
+            if ( m_selectingKeyboard == wxGridNoCellCoords )
+                m_selectingKeyboard = m_currentCellCoords;
+            if ( m_selectingKeyboard.GetRow() < m_numRows-1 )
+            {
+                m_selectingKeyboard.SetRow( m_selectingKeyboard.GetRow() + 1 );
+                MakeCellVisible( m_selectingKeyboard.GetRow(),
+                        m_selectingKeyboard.GetCol() );
+                HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+            }
+        }
+        else if ( m_currentCellCoords.GetRow() < m_numRows - 1 )
+        {
+            ClearSelection();
+            MakeCellVisible( m_currentCellCoords.GetRow() + 1,
+                             m_currentCellCoords.GetCol() );
+            SetCurrentCell( m_currentCellCoords.GetRow() + 1,
+                            m_currentCellCoords.GetCol() );
+        }
+        else
+            return FALSE;
         return TRUE;
     }
 
@@ -3987,17 +6824,33 @@ bool wxGrid::MoveCursorDown()
 }
 
 
-bool wxGrid::MoveCursorLeft()
+bool wxGrid::MoveCursorLeft( bool expandSelection )
 {
     if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() > 0 )
+         m_currentCellCoords.GetCol() >= 0 )
     {
-        MakeCellVisible( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() - 1 );
-
-        SetCurrentCell( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() - 1 );
-
+        if ( expandSelection )
+        {
+            if ( m_selectingKeyboard == wxGridNoCellCoords )
+                m_selectingKeyboard = m_currentCellCoords;
+            if ( m_selectingKeyboard.GetCol() > 0 )
+            {
+                m_selectingKeyboard.SetCol( m_selectingKeyboard.GetCol() - 1 );
+                MakeCellVisible( m_selectingKeyboard.GetRow(),
+                        m_selectingKeyboard.GetCol() );
+                HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+            }
+        }
+        else if ( m_currentCellCoords.GetCol() > 0 )
+        {
+            ClearSelection();
+            MakeCellVisible( m_currentCellCoords.GetRow(),
+                             m_currentCellCoords.GetCol() - 1 );
+            SetCurrentCell( m_currentCellCoords.GetRow(),
+                            m_currentCellCoords.GetCol() - 1 );
+        }
+        else
+            return FALSE;
         return TRUE;
     }
 
@@ -4005,17 +6858,33 @@ bool wxGrid::MoveCursorLeft()
 }
 
 
-bool wxGrid::MoveCursorRight()
+bool wxGrid::MoveCursorRight( bool expandSelection )
 {
     if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() < m_numCols - 1 )
+         m_currentCellCoords.GetCol() < m_numCols )
     {
-        MakeCellVisible( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() + 1 );
-
-        SetCurrentCell( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() + 1 );
-
+        if ( expandSelection )
+        {
+            if ( m_selectingKeyboard == wxGridNoCellCoords )
+                m_selectingKeyboard = m_currentCellCoords;
+            if ( m_selectingKeyboard.GetCol() < m_numCols - 1 )
+            {
+                m_selectingKeyboard.SetCol( m_selectingKeyboard.GetCol() + 1 );
+                MakeCellVisible( m_selectingKeyboard.GetRow(),
+                        m_selectingKeyboard.GetCol() );
+                HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+            }
+        }
+        else if ( m_currentCellCoords.GetCol() < m_numCols - 1 )
+        {
+            ClearSelection();
+            MakeCellVisible( m_currentCellCoords.GetRow(),
+                             m_currentCellCoords.GetCol() + 1 );
+            SetCurrentCell( m_currentCellCoords.GetRow(),
+                            m_currentCellCoords.GetCol() + 1 );
+        }
+        else
+            return FALSE;
         return TRUE;
     }
 
@@ -4033,7 +6902,7 @@ bool wxGrid::MovePageUp()
         int cw, ch;
         m_gridWin->GetClientSize( &cw, &ch );
 
-        int y = m_rowBottoms[ row ] - m_rowHeights[ row ];
+        int y = GetRowTop(row);
         int newRow = YToRow( y - ch + 1 );
         if ( newRow == -1 )
         {
@@ -4063,7 +6932,7 @@ bool wxGrid::MovePageDown()
         int cw, ch;
         m_gridWin->GetClientSize( &cw, &ch );
 
-        int y = m_rowBottoms[ row ] - m_rowHeights[ row ];
+        int y = GetRowTop(row);
         int newRow = YToRow( y + ch );
         if ( newRow == -1 )
         {
@@ -4083,7 +6952,7 @@ bool wxGrid::MovePageDown()
     return FALSE;
 }
 
-bool wxGrid::MoveCursorUpBlock()
+bool wxGrid::MoveCursorUpBlock( bool expandSelection )
 {
     if ( m_table &&
          m_currentCellCoords != wxGridNoCellCoords  &&
@@ -4130,15 +6999,23 @@ bool wxGrid::MoveCursorUpBlock()
         }
 
         MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
-
+        if ( expandSelection )
+        {
+            m_selectingKeyboard = wxGridCellCoords( row, col );
+            HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+        }
+        else
+        {
+            ClearSelection();
+            SetCurrentCell( row, col );
+        }
         return TRUE;
     }
 
     return FALSE;
 }
 
-bool wxGrid::MoveCursorDownBlock()
+bool wxGrid::MoveCursorDownBlock( bool expandSelection )
 {
     if ( m_table &&
          m_currentCellCoords != wxGridNoCellCoords  &&
@@ -4185,7 +7062,16 @@ bool wxGrid::MoveCursorDownBlock()
         }
 
         MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+        if ( expandSelection )
+        {
+            m_selectingKeyboard = wxGridCellCoords( row, col );
+            HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+        }
+        else
+        {
+            ClearSelection();
+            SetCurrentCell( row, col );
+        }
 
         return TRUE;
     }
@@ -4193,7 +7079,7 @@ bool wxGrid::MoveCursorDownBlock()
     return FALSE;
 }
 
-bool wxGrid::MoveCursorLeftBlock()
+bool wxGrid::MoveCursorLeftBlock( bool expandSelection )
 {
     if ( m_table &&
          m_currentCellCoords != wxGridNoCellCoords  &&
@@ -4240,7 +7126,16 @@ bool wxGrid::MoveCursorLeftBlock()
         }
 
         MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+        if ( expandSelection )
+        {
+            m_selectingKeyboard = wxGridCellCoords( row, col );
+            HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+        }
+        else
+        {
+            ClearSelection();
+            SetCurrentCell( row, col );
+        }
 
         return TRUE;
     }
@@ -4248,7 +7143,7 @@ bool wxGrid::MoveCursorLeftBlock()
     return FALSE;
 }
 
-bool wxGrid::MoveCursorRightBlock()
+bool wxGrid::MoveCursorRightBlock( bool expandSelection )
 {
     if ( m_table &&
          m_currentCellCoords != wxGridNoCellCoords  &&
@@ -4295,7 +7190,16 @@ bool wxGrid::MoveCursorRightBlock()
         }
 
         MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+        if ( expandSelection )
+        {
+            m_selectingKeyboard = wxGridCellCoords( row, col );
+            HighlightBlock( m_currentCellCoords, m_selectingKeyboard );
+        }
+        else
+        {
+            ClearSelection();
+            SetCurrentCell( row, col );
+        }
 
         return TRUE;
     }
@@ -4439,12 +7343,27 @@ void wxGrid::SetLabelFont( const wxFont& font )
 
 void wxGrid::SetRowLabelAlignment( int horiz, int vert )
 {
-    if ( horiz == wxLEFT || horiz == wxCENTRE || horiz == wxRIGHT )
+    // allow old (incorrect) defs to be used
+    switch ( horiz )
+    {
+        case wxLEFT:   horiz = wxALIGN_LEFT; break;
+        case wxRIGHT:  horiz = wxALIGN_RIGHT; break;
+        case wxCENTRE: horiz = wxALIGN_CENTRE; break;
+    }
+
+    switch ( vert )
+    {
+        case wxTOP:    vert = wxALIGN_TOP;    break;
+        case wxBOTTOM: vert = wxALIGN_BOTTOM; break;
+        case wxCENTRE: vert = wxALIGN_CENTRE; break;
+    }
+
+    if ( horiz == wxALIGN_LEFT || horiz == wxALIGN_CENTRE || horiz == wxALIGN_RIGHT )
     {
         m_rowLabelHorizAlign = horiz;
     }
 
-    if ( vert == wxTOP || vert == wxCENTRE || vert == wxBOTTOM )
+    if ( vert == wxALIGN_TOP || vert == wxALIGN_CENTRE || vert == wxALIGN_BOTTOM )
     {
         m_rowLabelVertAlign = vert;
     }
@@ -4457,12 +7376,27 @@ void wxGrid::SetRowLabelAlignment( int horiz, int vert )
 
 void wxGrid::SetColLabelAlignment( int horiz, int vert )
 {
-    if ( horiz == wxLEFT || horiz == wxCENTRE || horiz == wxRIGHT )
+    // allow old (incorrect) defs to be used
+    switch ( horiz )
+    {
+        case wxLEFT:   horiz = wxALIGN_LEFT; break;
+        case wxRIGHT:  horiz = wxALIGN_RIGHT; break;
+        case wxCENTRE: horiz = wxALIGN_CENTRE; break;
+    }
+
+    switch ( vert )
+    {
+        case wxTOP:    vert = wxALIGN_TOP;    break;
+        case wxBOTTOM: vert = wxALIGN_BOTTOM; break;
+        case wxCENTRE: vert = wxALIGN_CENTRE; break;
+    }
+
+    if ( horiz == wxALIGN_LEFT || horiz == wxALIGN_CENTRE || horiz == wxALIGN_RIGHT )
     {
         m_colLabelHorizAlign = horiz;
     }
 
-    if ( vert == wxTOP || vert == wxCENTRE || vert == wxBOTTOM )
+    if ( vert == wxALIGN_TOP || vert == wxALIGN_CENTRE || vert == wxALIGN_BOTTOM )
     {
         m_colLabelVertAlign = vert;
     }
@@ -4484,7 +7418,7 @@ void wxGrid::SetRowLabelValue( int row, const wxString& s )
             if ( rect.height > 0 )
             {
                 CalcScrolledPosition(0, rect.y, &rect.x, &rect.y);
-                rect.x = m_left;
+                rect.x = 0;
                 rect.width = m_rowLabelWidth;
                 m_rowLabelWin->Refresh( TRUE, &rect );
             }
@@ -4503,7 +7437,7 @@ void wxGrid::SetColLabelValue( int col, const wxString& s )
             if ( rect.width > 0 )
             {
                 CalcScrolledPosition(rect.x, 0, &rect.x, &rect.y);
-                rect.y = m_top;
+                rect.y = 0;
                 rect.height = m_colLabelHeight;
                 m_colLabelWin->Refresh( TRUE, &rect );
             }
@@ -4523,6 +7457,21 @@ void wxGrid::SetGridLineColour( const wxColour& colour )
     }
 }
 
+
+void wxGrid::SetCellHighlightColour( const wxColour& colour )
+{
+    if ( m_cellHighlightColour != colour )
+    {
+        m_cellHighlightColour = colour;
+
+        wxClientDC dc( m_gridWin );
+        PrepareDC( dc );
+        wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+        DrawCellHighlight(dc, attr);
+        attr->DecRef();
+    }
+}
+
 void wxGrid::EnableGridLines( bool enable )
 {
     if ( enable != m_gridLinesEnabled )
@@ -4555,7 +7504,7 @@ int wxGrid::GetRowSize( int row )
 {
     wxCHECK_MSG( row >= 0 && row < m_numRows, 0, _T("invalid row index") );
 
-    return m_rowHeights[row];
+    return GetRowHeight(row);
 }
 
 int wxGrid::GetDefaultColSize()
@@ -4567,7 +7516,7 @@ int wxGrid::GetColSize( int col )
 {
     wxCHECK_MSG( col >= 0 && col < m_numCols, 0, _T("invalid column index") );
 
-    return m_colWidths[col];
+    return GetColWidth(col);
 }
 
 // ============================================================================
@@ -4581,23 +7530,35 @@ int wxGrid::GetColSize( int col )
 
 void wxGrid::SetDefaultCellBackgroundColour( const wxColour& col )
 {
+    m_defaultCellAttr->SetBackgroundColour(col);
+#ifdef __WXGTK__
     m_gridWin->SetBackgroundColour(col);
+#endif
 }
 
 void wxGrid::SetDefaultCellTextColour( const wxColour& col )
 {
-    m_gridWin->SetForegroundColour(col);
+    m_defaultCellAttr->SetTextColour(col);
 }
 
 void wxGrid::SetDefaultCellAlignment( int horiz, int vert )
 {
-    m_defaultCellHAlign = horiz;
-    m_defaultCellVAlign = vert;
+    m_defaultCellAttr->SetAlignment(horiz, vert);
 }
 
 void wxGrid::SetDefaultCellFont( const wxFont& font )
 {
-    m_defaultCellFont = font;
+    m_defaultCellAttr->SetFont(font);
+}
+
+void wxGrid::SetDefaultRenderer(wxGridCellRenderer *renderer)
+{
+    m_defaultCellAttr->SetRenderer(renderer);
+}
+
+void wxGrid::SetDefaultEditor(wxGridCellEditor *editor)
+{
+    m_defaultCellAttr->SetEditor(editor);
 }
 
 // ----------------------------------------------------------------------------
@@ -4606,92 +7567,97 @@ void wxGrid::SetDefaultCellFont( const wxFont& font )
 
 wxColour wxGrid::GetDefaultCellBackgroundColour()
 {
-    return m_gridWin->GetBackgroundColour();
+    return m_defaultCellAttr->GetBackgroundColour();
 }
 
 wxColour wxGrid::GetDefaultCellTextColour()
 {
-    return m_gridWin->GetForegroundColour();
+    return m_defaultCellAttr->GetTextColour();
 }
 
 wxFont wxGrid::GetDefaultCellFont()
 {
-    return m_defaultCellFont;
+    return m_defaultCellAttr->GetFont();
 }
 
 void wxGrid::GetDefaultCellAlignment( int *horiz, int *vert )
 {
-    if ( horiz )
-        *horiz = m_defaultCellHAlign;
-    if ( vert )
-        *vert = m_defaultCellVAlign;
+    m_defaultCellAttr->GetAlignment(horiz, vert);
+}
+
+wxGridCellRenderer *wxGrid::GetDefaultRenderer() const
+{
+    return m_defaultCellAttr->GetRenderer(NULL, 0, 0);
+}
+
+wxGridCellEditor *wxGrid::GetDefaultEditor() const
+{
+    return m_defaultCellAttr->GetEditor(NULL,0,0);
 }
 
 // ----------------------------------------------------------------------------
 // access to cell attributes
 // ----------------------------------------------------------------------------
 
-// TODO VZ: we must cache the attr to allow only retrieveing it once!
-
 wxColour wxGrid::GetCellBackgroundColour(int row, int col)
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
-
-    wxColour colour;
-    if ( attr && attr->HasBackgroundColour() )
-        colour = attr->GetBackgroundColour();
-    else
-        colour = GetDefaultCellBackgroundColour();
-
-    attr->SafeDecRef();
-
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetBackgroundColour();
+    attr->DecRef();
     return colour;
 }
 
 wxColour wxGrid::GetCellTextColour( int row, int col )
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
-
-    wxColour colour;
-    if ( attr && attr->HasTextColour() )
-        colour = attr->GetTextColour();
-    else
-        colour = GetDefaultCellTextColour();
-
-    attr->SafeDecRef();
-
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetTextColour();
+    attr->DecRef();
     return colour;
 }
 
 wxFont wxGrid::GetCellFont( int row, int col )
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxFont font = attr->GetFont();
+    attr->DecRef();
+    return font;
+}
 
-    wxFont font;
-    if ( attr && attr->HasFont() )
-        font = attr->GetFont();
-    else
-        font = GetDefaultCellFont();
+void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert )
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    attr->GetAlignment(horiz, vert);
+    attr->DecRef();
+}
 
-    attr->SafeDecRef();
+wxGridCellRenderer* wxGrid::GetCellRenderer(int row, int col)
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellRenderer* renderer = attr->GetRenderer(this, row, col);
+    attr->DecRef();
 
-    return font;
+    return renderer;
 }
 
-void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert )
+wxGridCellEditor* wxGrid::GetCellEditor(int row, int col)
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellEditor* editor = attr->GetEditor(this, row, col);
+    attr->DecRef();
 
-    if ( attr && attr->HasAlignment() )
-        attr->GetAlignment(horiz, vert);
-    else
-        GetDefaultCellAlignment(horiz, vert);
+    return editor;
+}
 
-    attr->SafeDecRef();
+bool wxGrid::IsReadOnly(int row, int col) const
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    bool isReadOnly = attr->IsReadOnly();
+    attr->DecRef();
+    return isReadOnly;
 }
 
 // ----------------------------------------------------------------------------
-// setting cell attributes: this is forwarded to the table
+// attribute support: cache, automatic provider creation, ...
 // ----------------------------------------------------------------------------
 
 bool wxGrid::CanHaveAttributes()
@@ -4701,38 +7667,164 @@ bool wxGrid::CanHaveAttributes()
         return FALSE;
     }
 
-    if ( !m_table->GetAttrProvider() )
+    return m_table->CanHaveAttributes();
+}
+
+void wxGrid::ClearAttrCache()
+{
+    if ( m_attrCache.row != -1 )
     {
-        // use the default attr provider by default
-        // (another choice would be to just return FALSE thus forcing the user
-        // to it himself)
-        m_table->SetAttrProvider(new wxGridCellAttrProvider);
+        wxSafeDecRef(m_attrCache.attr);
+        m_attrCache.row = -1;
     }
+}
 
-    return TRUE;
+void wxGrid::CacheAttr(int row, int col, wxGridCellAttr *attr) const
+{
+    wxGrid *self = (wxGrid *)this;  // const_cast
+
+    self->ClearAttrCache();
+    self->m_attrCache.row = row;
+    self->m_attrCache.col = col;
+    self->m_attrCache.attr = attr;
+    wxSafeIncRef(attr);
 }
 
-wxGridCellAttr *wxGrid::GetCellAttr(int row, int col) const
+bool wxGrid::LookupAttr(int row, int col, wxGridCellAttr **attr) const
 {
-    wxGridCellAttr *attr = m_table->GetAttr(row, col);
-    if ( !attr )
+    if ( row == m_attrCache.row && col == m_attrCache.col )
     {
-        attr = new wxGridCellAttr;
+        *attr = m_attrCache.attr;
+        wxSafeIncRef(m_attrCache.attr);
 
-        // artificially inc the ref count to match DecRef() in caller
-        attr->IncRef();
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheHits++;
+#endif
+
+        return TRUE;
+    }
+    else
+    {
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheMisses++;
+#endif
+        return FALSE;
+    }
+}
 
-        m_table->SetAttr(attr, row, col);
+wxGridCellAttr *wxGrid::GetCellAttr(int row, int col) const
+{
+    wxGridCellAttr *attr;
+    if ( !LookupAttr(row, col, &attr) )
+    {
+        attr = m_table ? m_table->GetAttr(row, col) : (wxGridCellAttr *)NULL;
+        CacheAttr(row, col, attr);
+    }
+    if (attr)
+    {
+        attr->SetDefAttr(m_defaultCellAttr);
+    }
+    else
+    {
+        attr = m_defaultCellAttr;
+        attr->IncRef();
     }
 
     return attr;
 }
 
+wxGridCellAttr *wxGrid::GetOrCreateCellAttr(int row, int col) const
+{
+    wxGridCellAttr *attr;
+    if ( !LookupAttr(row, col, &attr) || !attr )
+    {
+        wxASSERT_MSG( m_table,
+                      _T("we may only be called if CanHaveAttributes() returned TRUE and then m_table should be !NULL") );
+
+        attr = m_table->GetAttr(row, col);
+        if ( !attr )
+        {
+            attr = new wxGridCellAttr;
+
+            // artificially inc the ref count to match DecRef() in caller
+            attr->IncRef();
+
+            m_table->SetAttr(attr, row, col);
+        }
+
+        CacheAttr(row, col, attr);
+    }
+    attr->SetDefAttr(m_defaultCellAttr);
+    return attr;
+}
+
+// ----------------------------------------------------------------------------
+// setting column attributes (wrappers around SetColAttr)
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetColFormatBool(int col)
+{
+    SetColFormatCustom(col, wxGRID_VALUE_BOOL);
+}
+
+void wxGrid::SetColFormatNumber(int col)
+{
+    SetColFormatCustom(col, wxGRID_VALUE_NUMBER);
+}
+
+void wxGrid::SetColFormatFloat(int col, int width, int precision)
+{
+    wxString typeName = wxGRID_VALUE_FLOAT;
+    if ( (width != -1) || (precision != -1) )
+    {
+        typeName << _T(':') << width << _T(',') << precision;
+    }
+
+    SetColFormatCustom(col, typeName);
+}
+
+void wxGrid::SetColFormatCustom(int col, const wxString& typeName)
+{
+    wxGridCellAttr *attr = new wxGridCellAttr;
+    wxGridCellRenderer *renderer = GetDefaultRendererForType(typeName);
+    attr->SetRenderer(renderer);
+
+    SetColAttr(col, attr);
+}
+
+// ----------------------------------------------------------------------------
+// setting cell attributes: this is forwarded to the table
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetRowAttr(int row, wxGridCellAttr *attr)
+{
+    if ( CanHaveAttributes() )
+    {
+        m_table->SetRowAttr(attr, row);
+    }
+    else
+    {
+        wxSafeDecRef(attr);
+    }
+}
+
+void wxGrid::SetColAttr(int col, wxGridCellAttr *attr)
+{
+    if ( CanHaveAttributes() )
+    {
+        m_table->SetColAttr(attr, col);
+    }
+    else
+    {
+        wxSafeDecRef(attr);
+    }
+}
+
 void wxGrid::SetCellBackgroundColour( int row, int col, const wxColour& colour )
 {
     if ( CanHaveAttributes() )
     {
-        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
         attr->SetBackgroundColour(colour);
         attr->DecRef();
     }
@@ -4742,7 +7834,7 @@ void wxGrid::SetCellTextColour( int row, int col, const wxColour& colour )
 {
     if ( CanHaveAttributes() )
     {
-        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
         attr->SetTextColour(colour);
         attr->DecRef();
     }
@@ -4752,7 +7844,7 @@ void wxGrid::SetCellFont( int row, int col, const wxFont& font )
 {
     if ( CanHaveAttributes() )
     {
-        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
         attr->SetFont(font);
         attr->DecRef();
     }
@@ -4762,30 +7854,124 @@ void wxGrid::SetCellAlignment( int row, int col, int horiz, int vert )
 {
     if ( CanHaveAttributes() )
     {
-        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
         attr->SetAlignment(horiz, vert);
         attr->DecRef();
     }
 }
 
+void wxGrid::SetCellRenderer(int row, int col, wxGridCellRenderer *renderer)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetRenderer(renderer);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetCellEditor(int row, int col, wxGridCellEditor* editor)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetEditor(editor);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetReadOnly(int row, int col, bool isReadOnly)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetReadOnly(isReadOnly);
+        attr->DecRef();
+    }
+}
+
+// ----------------------------------------------------------------------------
+// Data type registration
+// ----------------------------------------------------------------------------
+
+void wxGrid::RegisterDataType(const wxString& typeName,
+                              wxGridCellRenderer* renderer,
+                              wxGridCellEditor* editor)
+{
+    m_typeRegistry->RegisterDataType(typeName, renderer, editor);
+}
+
+
+wxGridCellEditor* wxGrid::GetDefaultEditorForCell(int row, int col) const
+{
+    wxString typeName = m_table->GetTypeName(row, col);
+    return GetDefaultEditorForType(typeName);
+}
+
+wxGridCellRenderer* wxGrid::GetDefaultRendererForCell(int row, int col) const
+{
+    wxString typeName = m_table->GetTypeName(row, col);
+    return GetDefaultRendererForType(typeName);
+}
+
+wxGridCellEditor*
+wxGrid::GetDefaultEditorForType(const wxString& typeName) const
+{
+    int index = m_typeRegistry->FindOrCloneDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        wxFAIL_MSG(wxT("Unknown data type name"));
+
+        return NULL;
+    }
+
+    return m_typeRegistry->GetEditor(index);
+}
+
+wxGridCellRenderer*
+wxGrid::GetDefaultRendererForType(const wxString& typeName) const
+{
+    int index = m_typeRegistry->FindOrCloneDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        wxFAIL_MSG(wxT("Unknown data type name"));
+
+        return NULL;
+    }
+
+    return m_typeRegistry->GetRenderer(index);
+}
+
+
 // ----------------------------------------------------------------------------
 // row/col size
 // ----------------------------------------------------------------------------
 
+void wxGrid::EnableDragRowSize( bool enable )
+{
+    m_canDragRowSize = enable;
+}
+
+
+void wxGrid::EnableDragColSize( bool enable )
+{
+    m_canDragColSize = enable;
+}
+
+void wxGrid::EnableDragGridSize( bool enable )
+{
+    m_canDragGridSize = enable;
+}
+
+
 void wxGrid::SetDefaultRowSize( int height, bool resizeExistingRows )
 {
     m_defaultRowHeight = wxMax( height, WXGRID_MIN_ROW_HEIGHT );
 
     if ( resizeExistingRows )
     {
-        int row;
-        int bottom = 0;
-        for ( row = 0;  row < m_numRows;  row++ )
-        {
-            m_rowHeights[row] = m_defaultRowHeight;
-            bottom += m_defaultRowHeight;
-            m_rowBottoms[row] = bottom;
-        }
+        InitRowHeights();
+
         CalcDimensions();
     }
 }
@@ -4794,12 +7980,17 @@ void wxGrid::SetRowSize( int row, int height )
 {
     wxCHECK_RET( row >= 0 && row < m_numRows, _T("invalid row index") );
 
-    int i;
+    if ( m_rowHeights.IsEmpty() )
+    {
+        // need to really create the array
+        InitRowHeights();
+    }
 
     int h = wxMax( 0, height );
     int diff = h - m_rowHeights[row];
 
     m_rowHeights[row] = h;
+    int i;
     for ( i = row;  i < m_numRows;  i++ )
     {
         m_rowBottoms[i] += diff;
@@ -4813,14 +8004,8 @@ void wxGrid::SetDefaultColSize( int width, bool resizeExistingCols )
 
     if ( resizeExistingCols )
     {
-        int col;
-        int right = 0;
-        for ( col = 0;  col < m_numCols;  col++ )
-        {
-            m_colWidths[col] = m_defaultColWidth;
-            right += m_defaultColWidth;
-            m_colRights[col] = right;
-        }
+        InitColWidths();
+
         CalcDimensions();
     }
 }
@@ -4829,12 +8014,19 @@ void wxGrid::SetColSize( int col, int width )
 {
     wxCHECK_RET( col >= 0 && col < m_numCols, _T("invalid column index") );
 
-    int i;
+    // should we check that it's bigger than GetColMinimalWidth(col) here?
+
+    if ( m_colWidths.IsEmpty() )
+    {
+        // need to really create the array
+        InitColWidths();
+    }
 
     int w = wxMax( 0, width );
     int diff = w - m_colWidths[col];
     m_colWidths[col] = w;
 
+    int i;
     for ( i = col;  i < m_numCols;  i++ )
     {
         m_colRights[i] += diff;
@@ -4843,339 +8035,267 @@ void wxGrid::SetColSize( int col, int width )
 }
 
 
-//
-// ------ cell value accessor functions
-//
-
-void wxGrid::SetCellValue( int row, int col, const wxString& s )
+void wxGrid::SetColMinimalWidth( int col, int width )
 {
-    if ( m_table )
-    {
-        m_table->SetValue( row, col, s.c_str() );
-        if ( !GetBatchCount() )
-        {
-            wxClientDC dc( m_gridWin );
-            PrepareDC( dc );
-            DrawCell( dc, wxGridCellCoords(row, col) );
-        }
-
-#if 0  // TODO: edit in place
+    m_colMinWidths.Put(col, width);
+}
 
-        if ( m_currentCellCoords.GetRow() == row &&
-             m_currentCellCoords.GetCol() == col )
-        {
-            SetEditControlValue( s );
-        }
-#endif
+void wxGrid::SetRowMinimalHeight( int row, int width )
+{
+    m_rowMinHeights.Put(row, width);
+}
 
-    }
+int wxGrid::GetColMinimalWidth(int col) const
+{
+    long value = m_colMinWidths.Get(col);
+    return value != wxNOT_FOUND ? (int)value : WXGRID_MIN_COL_WIDTH;
 }
 
+int wxGrid::GetRowMinimalHeight(int row) const
+{
+    long value = m_rowMinHeights.Get(row);
+    return value != wxNOT_FOUND ? (int)value : WXGRID_MIN_ROW_HEIGHT;
+}
 
-//
-// ------ Block, row and col selection
-//
+// ----------------------------------------------------------------------------
+// auto sizing
+// ----------------------------------------------------------------------------
 
-void wxGrid::SelectRow( int row, bool addToSelected )
+void wxGrid::AutoSizeColOrRow( int colOrRow, bool setAsMin, bool column )
 {
-    wxRect r;
+    wxClientDC dc(m_gridWin);
 
-    if ( IsSelection() && addToSelected )
-    {
-        wxRect  rect[4];
-        bool    need_refresh[4] = { FALSE, FALSE, FALSE, FALSE };
-        int     i;
+    // init both of them to avoid compiler warnings, even if weo nly need one
+    int row = -1,
+        col = -1;
+    if ( column )
+        col = colOrRow;
+    else
+        row = colOrRow;
 
-        wxCoord oldLeft   = m_selectedTopLeft.GetCol();
-        wxCoord oldTop    = m_selectedTopLeft.GetRow();
-        wxCoord oldRight  = m_selectedBottomRight.GetCol();
-        wxCoord oldBottom = m_selectedBottomRight.GetRow();
+    wxCoord extent, extentMax = 0;
+    int max = column ? m_numRows : m_numCols;
+    for ( int rowOrCol = 0; rowOrCol < max; rowOrCol++ )
+    {
+        if ( column )
+            row = rowOrCol;
+        else
+            col = rowOrCol;
 
-        if ( oldTop > row )
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellRenderer* renderer = attr->GetRenderer(this, row, col);
+        if ( renderer )
         {
-            need_refresh[0] = TRUE;
-            rect[0] = BlockToDeviceRect( wxGridCellCoords ( row, 0 ),
-                                         wxGridCellCoords ( oldTop - 1,
-                                                            m_numCols - 1 ) );
-            m_selectedTopLeft.SetRow( row );
+            wxSize size = renderer->GetBestSize(*this, *attr, dc, row, col);
+            extent = column ? size.x : size.y;
+            if ( extent > extentMax )
+            {
+                extentMax = extent;
+            }
+
+            renderer->DecRef();
         }
 
-        if ( oldLeft > 0 )
-        {
-            need_refresh[1] = TRUE;
-            rect[1] = BlockToDeviceRect( wxGridCellCoords ( oldTop, 0 ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            oldLeft - 1 ) );
+        attr->DecRef();
+    }
 
-            m_selectedTopLeft.SetCol( 0 );
-        }
+    // now also compare with the column label extent
+    wxCoord w, h;
+    dc.SetFont( GetLabelFont() );
 
-        if ( oldBottom < row )
-        {
-            need_refresh[2] = TRUE;
-            rect[2] = BlockToDeviceRect( wxGridCellCoords ( oldBottom + 1, 0 ),
-                                         wxGridCellCoords ( row,
-                                                            m_numCols - 1 ) );
-            m_selectedBottomRight.SetRow( row );
-        }
+    if ( column )
+        dc.GetTextExtent( GetColLabelValue(col), &w, &h );
+    else
+        dc.GetTextExtent( GetRowLabelValue(col), &w, &h );
 
-        if ( oldRight < m_numCols - 1 )
-        {
-            need_refresh[3] = TRUE;
-            rect[3] = BlockToDeviceRect( wxGridCellCoords ( oldTop ,
-                                                            oldRight + 1 ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            m_numCols - 1 ) );
-            m_selectedBottomRight.SetCol( m_numCols - 1 );
-        }
+    extent = column ? w : h;
+    if ( extent > extentMax )
+    {
+        extentMax = extent;
+    }
 
-        for (i = 0; i < 4; i++ )
-            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
-                m_gridWin->Refresh( FALSE, &(rect[i]) );
+    if ( !extentMax )
+    {
+        // empty column - give default extent (notice that if extentMax is less
+        // than default extent but != 0, it's ok)
+        extentMax = column ? m_defaultColWidth : m_defaultRowHeight;
     }
     else
     {
-        r = SelectionToDeviceRect();
-        ClearSelection();
-        if ( r != wxGridNoCellRect ) m_gridWin->Refresh( FALSE, &r );
-
-        m_selectedTopLeft.Set( row, 0 );
-        m_selectedBottomRight.Set( row, m_numCols-1 );
-        r = SelectionToDeviceRect();
-        m_gridWin->Refresh( FALSE, &r );
+        if ( column )
+        {
+            // leave some space around text
+            extentMax += 10;
+        }
+        else
+        {
+            extentMax += 6;
+        }
     }
 
-    wxGridRangeSelectEvent gridEvt( GetId(),
-                                    EVT_GRID_RANGE_SELECT,
-                                    this,
-                                    m_selectedTopLeft,
-                                    m_selectedBottomRight );
+    if ( column )
+        SetColSize(col, extentMax);
+    else
+        SetRowSize(row, extentMax);
 
-    GetEventHandler()->ProcessEvent(gridEvt);
+    if ( setAsMin )
+    {
+        if ( column )
+            SetColMinimalWidth(col, extentMax);
+        else
+            SetRowMinimalHeight(row, extentMax);
+    }
 }
 
-
-void wxGrid::SelectCol( int col, bool addToSelected )
+int wxGrid::SetOrCalcColumnSizes(bool calcOnly, bool setAsMin)
 {
-    if ( IsSelection() && addToSelected )
-    {
-        wxRect  rect[4];
-        bool    need_refresh[4] = { FALSE, FALSE, FALSE, FALSE };
-        int     i;
-
-        wxCoord oldLeft   = m_selectedTopLeft.GetCol();
-        wxCoord oldTop    = m_selectedTopLeft.GetRow();
-        wxCoord oldRight  = m_selectedBottomRight.GetCol();
-        wxCoord oldBottom = m_selectedBottomRight.GetRow();
+    int width = m_rowLabelWidth;
 
-        if ( oldLeft > col )
+    for ( int col = 0; col < m_numCols; col++ )
+    {
+        if ( !calcOnly )
         {
-            need_refresh[0] = TRUE;
-            rect[0] = BlockToDeviceRect( wxGridCellCoords ( 0, col ),
-                                         wxGridCellCoords ( m_numRows - 1,
-                                                            oldLeft - 1 ) );
-            m_selectedTopLeft.SetCol( col );
+            AutoSizeColumn(col, setAsMin);
         }
 
-        if ( oldTop  > 0 )
-        {
-            need_refresh[1] = TRUE;
-            rect[1] = BlockToDeviceRect( wxGridCellCoords ( 0, oldLeft ),
-                                         wxGridCellCoords ( oldTop - 1,
-                                                            oldRight ) );
-            m_selectedTopLeft.SetRow( 0 );
-        }
+        width += GetColWidth(col);
+    }
 
-        if ( oldRight < col )
-        {
-            need_refresh[2] = TRUE;
-            rect[2] = BlockToDeviceRect( wxGridCellCoords ( 0, oldRight + 1 ),
-                                         wxGridCellCoords ( m_numRows - 1,
-                                                            col            ) );
-            m_selectedBottomRight.SetCol( col );
-        }
+    return width;
+}
+
+int wxGrid::SetOrCalcRowSizes(bool calcOnly, bool setAsMin)
+{
+    int height = m_colLabelHeight;
 
-        if ( oldBottom < m_numRows - 1 )
+    for ( int row = 0; row < m_numRows; row++ )
+    {
+        if ( !calcOnly )
         {
-            need_refresh[3] = TRUE;
-            rect[3] = BlockToDeviceRect( wxGridCellCoords ( oldBottom + 1,
-                                                            oldLeft ),
-                                         wxGridCellCoords ( m_numRows - 1,
-                                                            oldRight ) );
-            m_selectedBottomRight.SetRow( m_numRows - 1 );
+            AutoSizeRow(row, setAsMin);
         }
 
-        for (i = 0; i < 4; i++ )
-            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
-                m_gridWin->Refresh( FALSE, &(rect[i]) );
+        height += GetRowHeight(row);
     }
-    else
-    {
-        wxRect r;
 
-        r = SelectionToDeviceRect();
-        ClearSelection();
-        if ( r != wxGridNoCellRect ) m_gridWin->Refresh( FALSE, &r );
+    return height;
+}
 
-        m_selectedTopLeft.Set( 0, col );
-        m_selectedBottomRight.Set( m_numRows-1, col );
-        r = SelectionToDeviceRect();
-        m_gridWin->Refresh( FALSE, &r );
-    }
+void wxGrid::AutoSize()
+{
+    // set the size too
+    SetSize(SetOrCalcColumnSizes(FALSE), SetOrCalcRowSizes(FALSE));
+}
 
-    wxGridRangeSelectEvent gridEvt( GetId(),
-                                    EVT_GRID_RANGE_SELECT,
-                                    this,
-                                    m_selectedTopLeft,
-                                    m_selectedBottomRight );
+wxSize wxGrid::DoGetBestSize() const
+{
+    // don't set sizes, only calculate them
+    wxGrid *self = (wxGrid *)this;  // const_cast
 
-    GetEventHandler()->ProcessEvent(gridEvt);
+    return wxSize(self->SetOrCalcColumnSizes(TRUE),
+                  self->SetOrCalcRowSizes(TRUE));
 }
 
-
-void wxGrid::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol )
+void wxGrid::Fit()
 {
-    int temp;
-    wxGridCellCoords updateTopLeft, updateBottomRight;
+    AutoSize();
+}
 
-    if ( topRow > bottomRow )
-    {
-        temp = topRow;
-        topRow = bottomRow;
-        bottomRow = temp;
-    }
 
-    if ( leftCol > rightCol )
-    {
-        temp = leftCol;
-        leftCol = rightCol;
-        rightCol = temp;
-    }
+wxPen& wxGrid::GetDividerPen() const
+{
+    return wxNullPen;
+}
 
-    updateTopLeft = wxGridCellCoords( topRow, leftCol );
-    updateBottomRight = wxGridCellCoords( bottomRow, rightCol );
+// ----------------------------------------------------------------------------
+// cell value accessor functions
+// ----------------------------------------------------------------------------
 
-    if ( m_selectedTopLeft != updateTopLeft ||
-         m_selectedBottomRight != updateBottomRight )
+void wxGrid::SetCellValue( int row, int col, const wxString& s )
+{
+    if ( m_table )
     {
-        // Compute two optimal update rectangles:
-        // Either one rectangle is a real subset of the
-        // other, or they are (almost) disjoint!
-        wxRect  rect[4];
-        bool    need_refresh[4] = { FALSE, FALSE, FALSE, FALSE };
-        int     i;
-
-        // Store intermediate values
-        wxCoord oldLeft   = m_selectedTopLeft.GetCol();
-        wxCoord oldTop    = m_selectedTopLeft.GetRow();
-        wxCoord oldRight  = m_selectedBottomRight.GetCol();
-        wxCoord oldBottom = m_selectedBottomRight.GetRow();
-
-        // Determine the outer/inner coordinates.
-        if (oldLeft > leftCol)
-        {
-            temp = oldLeft;
-            oldLeft = leftCol;
-            leftCol = temp;
-        }
-        if (oldTop > topRow )
-        {
-            temp = oldTop;
-            oldTop = topRow;
-            topRow = temp;
-        }
-        if (oldRight < rightCol )
+        m_table->SetValue( row, col, s );
+        if ( !GetBatchCount() )
         {
-            temp = oldRight;
-            oldRight = rightCol;
-            rightCol = temp;
+            wxClientDC dc( m_gridWin );
+            PrepareDC( dc );
+            DrawCell( dc, wxGridCellCoords(row, col) );
         }
-        if (oldBottom < bottomRow)
+
+        if ( m_currentCellCoords.GetRow() == row &&
+             m_currentCellCoords.GetCol() == col &&
+             IsCellEditControlShown())
+             // Note: If we are using IsCellEditControlEnabled,
+             // this interacts badly with calling SetCellValue from
+             // an EVT_GRID_CELL_CHANGE handler.
         {
-            temp = oldBottom;
-            oldBottom = bottomRow;
-            bottomRow = temp;
+            HideCellEditControl();
+            ShowCellEditControl(); // will reread data from table
         }
+    }
+}
 
-        // Now, either the stuff marked old is the outer
-        // rectangle or we don't have a situation where one
-        // is contained in the other.
 
-        if ( oldLeft < leftCol )
-        {
-            need_refresh[0] = TRUE;
-            rect[0] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            oldLeft ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            leftCol - 1 ) );
-        }
+//
+// ------ Block, row and col selection
+//
 
-        if ( oldTop  < topRow )
-        {
-            need_refresh[1] = TRUE;
-            rect[1] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            leftCol ),
-                                         wxGridCellCoords ( topRow - 1,
-                                                            rightCol ) );
-        }
+void wxGrid::SelectRow( int row, bool addToSelected )
+{
+    if ( IsSelection() && !addToSelected )
+        ClearSelection();
 
-        if ( oldRight > rightCol )
-        {
-            need_refresh[2] = TRUE;
-            rect[2] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            rightCol + 1 ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            oldRight ) );
-        }
+    m_selection->SelectRow( row, FALSE, addToSelected );
+}
 
-        if ( oldBottom > bottomRow )
-        {
-            need_refresh[3] = TRUE;
-            rect[3] = BlockToDeviceRect( wxGridCellCoords ( bottomRow + 1,
-                                                            leftCol ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            rightCol ) );
-        }
 
+void wxGrid::SelectCol( int col, bool addToSelected )
+{
+    if ( IsSelection() && !addToSelected )
+        ClearSelection();
 
-        // Change Selection
-        m_selectedTopLeft = updateTopLeft;
-        m_selectedBottomRight = updateBottomRight;
+    m_selection->SelectCol( col, FALSE, addToSelected );
+}
 
-        // various Refresh() calls
-        for (i = 0; i < 4; i++ )
-            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
-                m_gridWin->Refresh( FALSE, &(rect[i]) );
-    }
 
-    // only generate an event if the block is not being selected by
-    // dragging the mouse (in which case the event will be generated in
-    // the mouse event handler)
-    if ( !m_isDragging )
-    {
-        wxGridRangeSelectEvent gridEvt( GetId(),
-                                        EVT_GRID_RANGE_SELECT,
-                                        this,
-                                        m_selectedTopLeft,
-                                        m_selectedBottomRight );
+void wxGrid::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol,
+                          bool addToSelected )
+{
+    if ( IsSelection() && !addToSelected )
+        ClearSelection();
 
-        GetEventHandler()->ProcessEvent(gridEvt);
-    }
+    m_selection->SelectBlock( topRow, leftCol, bottomRow, rightCol,
+                              FALSE, addToSelected );
 }
 
+
 void wxGrid::SelectAll()
 {
-    m_selectedTopLeft.Set( 0, 0 );
-    m_selectedBottomRight.Set( m_numRows-1, m_numCols-1 );
+    m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 );
+}
 
-    m_gridWin->Refresh();
+bool wxGrid::IsSelection()
+{
+    return ( m_selection->IsSelection() ||
+             ( m_selectingTopLeft != wxGridNoCellCoords &&
+               m_selectingBottomRight != wxGridNoCellCoords ) );
 }
 
+bool wxGrid::IsInSelection( int row, int col )
+{
+    return ( m_selection->IsInSelection( row, col ) ||
+             ( row >= m_selectingTopLeft.GetRow() &&
+               col >= m_selectingTopLeft.GetCol() &&
+               row <= m_selectingBottomRight.GetRow() &&
+               col <= m_selectingBottomRight.GetCol() ) );
+}
 
 void wxGrid::ClearSelection()
 {
-    m_selectedTopLeft = wxGridNoCellCoords;
-    m_selectedBottomRight = wxGridNoCellCoords;
+    m_selectingTopLeft = wxGridNoCellCoords;
+    m_selectingBottomRight = wxGridNoCellCoords;
+    m_selection->ClearSelection();
 }
 
 
@@ -5217,6 +8337,9 @@ wxRect wxGrid::BlockToDeviceRect( const wxGridCellCoords &topLeft,
     int cw, ch;
     m_gridWin->GetClientSize( &cw, &ch );
 
+    if (right < 0 || bottom < 0 || left > cw || top > ch)
+        return wxRect( 0, 0, 0, 0);
+
     rect.SetLeft( wxMax(0, left) );
     rect.SetTop( wxMax(0, top) );
     rect.SetRight( wxMin(cw, right) );
@@ -5234,7 +8357,7 @@ wxRect wxGrid::BlockToDeviceRect( const wxGridCellCoords &topLeft,
 IMPLEMENT_DYNAMIC_CLASS( wxGridEvent, wxEvent )
 
 wxGridEvent::wxGridEvent( int id, wxEventType type, wxObject* obj,
-                          int row, int col, int x, int y,
+                          int row, int col, int x, int y, bool sel,
                           bool control, bool shift, bool alt, bool meta )
         : wxNotifyEvent( type, id )
 {
@@ -5242,6 +8365,7 @@ wxGridEvent::wxGridEvent( int id, wxEventType type, wxObject* obj,
     m_col = col;
     m_x = x;
     m_y = y;
+    m_selecting = sel;
     m_control = control;
     m_shift = shift;
     m_alt = alt;
@@ -5275,11 +8399,13 @@ IMPLEMENT_DYNAMIC_CLASS( wxGridRangeSelectEvent, wxEvent )
 wxGridRangeSelectEvent::wxGridRangeSelectEvent(int id, wxEventType type, wxObject* obj,
                                                const wxGridCellCoords& topLeft,
                                                const wxGridCellCoords& bottomRight,
-                                               bool control, bool shift, bool alt, bool meta )
+                                               bool sel, bool control,
+                                               bool shift, bool alt, bool meta )
         : wxNotifyEvent( type, id )
 {
     m_topLeft     = topLeft;
     m_bottomRight = bottomRight;
+    m_selecting   = sel;
     m_control     = control;
     m_shift       = shift;
     m_alt         = alt;
@@ -5290,4 +8416,3 @@ wxGridRangeSelectEvent::wxGridRangeSelectEvent(int id, wxEventType type, wxObjec
 
 
 #endif // ifndef wxUSE_NEW_GRID
-