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do not call setlocale() twice in wxLocale::IsAvailable() and in IMPLEMENT_STRTOX_L_START
[wxWidgets.git] / samples / dataview / dataview.cpp
diff --git a/samples/dataview/dataview.cpp b/samples/dataview/dataview.cpp
index 4b8f7a5473acee573563be036b51a493373d7db7..cf7f30e41c6aaa503e3dc419902e48b06dd81e20 100644 (file)
--- a/samples/dataview/dataview.cpp
+++ b/samples/dataview/dataview.cpp
@@ -9,6 +9,10 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
@@ -20,621 +24,235 @@
     #include "wx/wx.h"
 #endif
 
     #include "wx/wx.h"
 #endif
 
+#include "wx/dataview.h"
 #include "wx/datetime.h"
 #include "wx/splitter.h"
 #include "wx/aboutdlg.h"
 #include "wx/choicdlg.h"
 #include "wx/numdlg.h"
 #include "wx/datetime.h"
 #include "wx/splitter.h"
 #include "wx/aboutdlg.h"
 #include "wx/choicdlg.h"
 #include "wx/numdlg.h"
-#include "wx/dataview.h"
 #include "wx/spinctrl.h"
 #include "wx/spinctrl.h"
+#include "wx/imaglist.h"
+#include "wx/notebook.h"
+
+#include "mymodels.h"
+
+// ----------------------------------------------------------------------------
+// resources
+// ----------------------------------------------------------------------------
 
 #ifndef __WXMSW__
     #include "../sample.xpm"
 #endif
 
 
 #ifndef __WXMSW__
     #include "../sample.xpm"
 #endif
 
-#include "null.xpm"
-
-/* XPM */
-static const char *small1_xpm[] = {
-/* columns rows colors chars-per-pixel */
-"16 16 6 1",
-". c Black",
-"o c #FFFFFF",
-"X c #000080",
-"O c #FFFF00",
-"  c None",
-"+ c #FF0000",
-/* pixels */
-"                ",
-"                ",
-"                ",
-"    .......     ",
-"    .XXXXX.     ",
-"    .oXXXX.     ",
-"    .oXXX.......",
-".....oXXX.OOOOO.",
-".+++.XXXX.oOOOO.",
-".o++......oOOOO.",
-".o++++.  .oOOOO.",
-".o++++.  .OOOOO.",
-".+++++.  .......",
-".......         ",
-"                ",
-"                "
+#include "wx_small.xpm"
+
+// ----------------------------------------------------------------------------
+// MyApp
+// ----------------------------------------------------------------------------
+
+class MyApp: public wxApp
+{
+public:
+    virtual bool OnInit();
 };
 
 };
 
+// ----------------------------------------------------------------------------
+// MyFrame
+// ----------------------------------------------------------------------------
 
 
+class MyFrame : public wxFrame
+{
+public:
+    MyFrame(wxFrame *frame, const wxString &title, int x, int y, int w, int h);
+    ~MyFrame();
 
 
-#define DEFAULT_ALIGN                   wxALIGN_LEFT
-#define DATAVIEW_DEFAULT_STYLE          (wxDV_MULTIPLE|wxDV_HORIZ_RULES|wxDV_VERT_RULES)
+    void BuildDataViewCtrl(wxPanel* parent,
+                           unsigned int nPanel,
+                           unsigned long style = 0);
 
 
+public:     // event handlers
 
 
-// -------------------------------------
-// MyMusicModel
-// -------------------------------------
+    void OnStyleChange(wxCommandEvent& event);
+    void OnQuit(wxCommandEvent& event);
+    void OnAbout(wxCommandEvent& event);
 
 
-/*
-Implement this data model
-            Title               Artist               Year
--------------------------------------------------------------
-1: My Music:
-    2:  Pop music
-        3:  You are not alone   Michael Jackson      1995
-        4:  Take a bow          Madonna              1994
-    5:  Classical music
-        6:  Ninth Symphony      Ludwig v. Beethoven  1824
-        7:  German Requiem      Johannes Brahms      1868
-*/
+    void OnClearLog(wxCommandEvent& event);
+    void OnPageChanged(wxBookCtrlEvent& event);
 
 
+    void OnAddMozart(wxCommandEvent& event);
+    void OnDeleteMusic(wxCommandEvent& event);
+    void OnDeleteYear(wxCommandEvent& event);
+    void OnSelectNinth(wxCommandEvent& event);
+    void OnCollapse(wxCommandEvent& event);
+    void OnExpand(wxCommandEvent& event);
 
 
+    void OnPrependList(wxCommandEvent& event);
+    void OnDeleteList(wxCommandEvent& event);
 
 
-class MyMusicModelNode;
-WX_DEFINE_ARRAY_PTR( MyMusicModelNode*, MyMusicModelNodes );
+    void OnValueChanged( wxDataViewEvent &event );
 
 
-class MyMusicModelNode
-{
-public:
-    MyMusicModelNode( MyMusicModelNode* parent, 
-                      const wxString &title, const wxString &artist, int year )
-    { 
-        m_parent = parent; 
-        m_title = title;
-        m_artist = artist;
-        m_year = year;
-        m_isContainer = false;
-    }
-    
-    MyMusicModelNode( MyMusicModelNode* parent,
-                      const wxString &branch )
-    { 
-        m_parent = parent; 
-        m_title = branch;
-        m_year = -1;
-        m_isContainer = true;
-    }
-    
-    ~MyMusicModelNode()
-    { 
-        size_t count = m_children.GetCount();
-        size_t i;
-        for (i = 0; i < count; i++)
-        {
-            MyMusicModelNode *child = m_children[i];
-            delete child;
-        }
-    }
+    void OnActivated( wxDataViewEvent &event );
+    void OnExpanding( wxDataViewEvent &event );
+    void OnExpanded( wxDataViewEvent &event );
+    void OnCollapsing( wxDataViewEvent &event );
+    void OnCollapsed( wxDataViewEvent &event );
+    void OnSelectionChanged( wxDataViewEvent &event );
 
 
-    bool IsContainer()                                    { return m_isContainer; }
+    void OnStartEditing( wxDataViewEvent &event );
+    void OnEditingStarted( wxDataViewEvent &event );
+    void OnEditingDone( wxDataViewEvent &event );
 
 
-    MyMusicModelNode* GetParent()                         { return m_parent; }
-    MyMusicModelNodes &GetChildren()                      { return m_children; }
-    MyMusicModelNode* GetNthChild( unsigned int n )       { return m_children.Item( n ); }
-    void Insert( MyMusicModelNode* child, unsigned int n) { m_children.Insert( child, n); }
-    void Append( MyMusicModelNode* child )                { m_children.Add( child ); }
-    unsigned int GetChildCount()                          { return m_children.GetCount(); }
+    void OnHeaderClick( wxDataViewEvent &event );
+    void OnHeaderRightClick( wxDataViewEvent &event );
+    void OnSorted( wxDataViewEvent &event );
 
 
-public:
-    wxString            m_title;
-    wxString            m_artist;
-    int                 m_year;
-    
-private:
-    MyMusicModelNode   *m_parent;
-    MyMusicModelNodes   m_children; 
-    bool                m_isContainer;
-};
+    void OnContextMenu( wxDataViewEvent &event );
 
 
- 
-class MyMusicModel: public wxDataViewModel
-{
-public:
+    void OnRightClick( wxMouseEvent &event );
+    void OnGoto( wxCommandEvent &event);
+    void OnAddMany( wxCommandEvent &event);
 
 
-    // constructor
+    void OnBeginDrag( wxDataViewEvent &event );
+    void OnDropPossible( wxDataViewEvent &event );
+    void OnDrop( wxDataViewEvent &event );
 
 
-    MyMusicModel() 
-    {
-        m_root = new MyMusicModelNode( NULL, wxT("My Music" ));
-        m_pop = new MyMusicModelNode( m_root, wxT("Pop music") );
-        m_root->Append( m_pop );
-        m_pop->Append( new MyMusicModelNode( m_pop, 
-            wxT("You are not alone"), wxT("Michael Jackson"), 1995 ) );
-        m_pop->Append( new MyMusicModelNode( m_pop, 
-            wxT("Take a bow"), wxT("Madonna"), 1994 ) );
-        m_classical = new MyMusicModelNode( m_root, wxT("Classical music") );
-        m_root->Append( m_classical );
-        m_classical->Append( new MyMusicModelNode( m_classical, 
-            wxT("Ninth symphony"), wxT("Ludwig van Beethoven"), 1824 ) );
-        m_classical->Append( new MyMusicModelNode( m_classical, 
-            wxT("German Requiem"), wxT("Johannes Brahms"), 1868 ) );
-        m_classicalMusicIsKnownToControl = false;
-    }
-    
-    // helper method for wxLog
-    
-    wxString GetTitle( const wxDataViewItem &item )
-    {
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        if (!node)
-            return wxEmptyString;
-            
-        return node->m_title;
-    }
-    
-    // helper methods to change the model
+private:
+    wxNotebook* m_notebook;
 
 
-    void AddToClassical( const wxString &title, const wxString &artist, int year )
-    {
-        // add to data
-        MyMusicModelNode *child_node = 
-            new MyMusicModelNode( m_classical, title, artist, year );
-        
-        m_classical->Append( child_node );
-        
-        if (m_classicalMusicIsKnownToControl)
-        {
-            // notify control
-            wxDataViewItem child( (void*) child_node );
-            wxDataViewItem parent( (void*) m_classical );
-            ItemAdded( parent, child );
-        }
-    }
+    // the controls stored in the various tabs of the main notebook:
 
 
-    void Delete( const wxDataViewItem &item )
-    {
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        wxDataViewItem parent( node->GetParent() );
-        
-        node->GetParent()->GetChildren().Remove( node );
-        delete node;
-        
-        // notify control
-        ItemDeleted( parent, item );
-    }
-    
-    // override sorting to always sort branches ascendingly
-    
-    int Compare( const wxDataViewItem &item1, const wxDataViewItem &item2, 
-                 unsigned int column, bool ascending )
-    {
-        if (IsContainer(item1) && IsContainer(item2))
-        {
-            wxVariant value1,value2;
-            GetValue( value1, item1, 0 );
-            GetValue( value2, item2, 0 );
-
-            wxString str1 = value1.GetString();
-            wxString str2 = value2.GetString();
-            int res = str1.Cmp( str2 );
-            if (res) return res;
-            
-            // items must be different
-            unsigned long litem1 = (unsigned long) item1.GetID();    
-            unsigned long litem2 = (unsigned long) item2.GetID();    
-
-            return litem1-litem2;
-        }
-        
-        return wxDataViewModel::Compare( item1, item2, column, ascending );
-    }
+    wxDataViewCtrl* m_ctrl[4];
 
 
-    // implementation of base class virtuals to define model
-    
-    virtual unsigned int GetColumnCount() const
-    {
-        return 3;
-    }
+    // the models associated with the first two DVC:
 
 
-    virtual wxString GetColumnType( unsigned int col ) const
-    {
-        if (col == 2)
-            return wxT("long");
-            
-        return wxT("string");
-    }
+    wxObjectDataPtr<MyMusicTreeModel> m_music_model;
+    wxObjectDataPtr<MyListModel> m_list_model;
 
 
-    virtual void GetValue( wxVariant &variant, 
-                           const wxDataViewItem &item, unsigned int col ) const
-    {
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        switch (col)
-        {
-            case 0: variant = node->m_title; break;
-            case 1: variant = node->m_artist; break;
-            case 2: variant = (long) node->m_year; break;
-            default: 
-            {
-                wxLogError( wxT("MyMusicModel::GetValue: wrong column" ));
-                
-                // provoke a crash when mouse button down
-                wxMouseState state = wxGetMouseState();
-                if (state.ShiftDown())
-                {
-                    char *crash = 0;
-                    *crash = 0;
-                }
-            }
-        }
-    }
+    // other data:
 
 
-    virtual bool SetValue( const wxVariant &variant, 
-                           const wxDataViewItem &item, unsigned int col )
-    {
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        switch (col)
-        {
-            case 0: node->m_title = variant.GetString(); return true;
-            case 1: node->m_artist  = variant.GetString(); return true;
-            case 2: node->m_year  = variant.GetLong(); return true;
-            default: wxLogError( wxT("MyMusicModel::SetValue: wrong column") );
-        }
-        return false;
-    }
+    wxDataViewColumn* m_col;
 
 
-    virtual wxDataViewItem GetParent( const wxDataViewItem &item ) const
-    {
-        // the invisble root node has no parent
-        if (!item.IsOk())
-            return wxDataViewItem(0);
-            
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        
-        // "MyMusic" also has no parent
-        if (node == m_root)
-            return wxDataViewItem(0);
-            
-        return wxDataViewItem( (void*) node->GetParent() );
-    }
+    wxTextCtrl* m_log;
+    wxLog *m_logOld;
 
 
-    virtual bool IsContainer( const wxDataViewItem &item ) const
-    {
-        // the invisble root node can have children (in
-        // our model always "MyMusic")
-        if (!item.IsOk())
-            return true;
-    
-        MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
-        return node->IsContainer();
-    }
-    
-    virtual unsigned int GetChildren( const wxDataViewItem &parent, wxDataViewItemArray &array ) const
-    {
-        MyMusicModelNode *node = (MyMusicModelNode*) parent.GetID();
-        if (!node)
-        {
-            array.Add( wxDataViewItem( (void*) m_root ) );
-            return 1;
-        }
-        
-        if (node == m_classical)
-        {
-            MyMusicModel *model = (MyMusicModel*)(const MyMusicModel*) this;
-            model->m_classicalMusicIsKnownToControl = true;
-        }
-        
-        if (node->GetChildCount() == 0)
-        {
-            return 0;
-        }
-           
-        unsigned int count = node->GetChildren().GetCount();
-        unsigned int pos;
-        for (pos = 0; pos < count; pos++)
-        {
-            MyMusicModelNode *child = node->GetChildren().Item( pos );
-            array.Add( wxDataViewItem( (void*) child ) );
-        }
-        return count;
-    }
-    
 private:
 private:
-    MyMusicModelNode*   m_root;
-    MyMusicModelNode*   m_pop;
-    MyMusicModelNode*   m_classical;
-    bool                m_classicalMusicIsKnownToControl;
+    DECLARE_EVENT_TABLE()
 };
 
 
 };
 
 
-static int my_sort_reverse( int *v1, int *v2 )
-{
-   return *v2-*v1;
-}
-
-static int my_sort( int *v1, int *v2 )
-{
-   return *v1-*v2;
-}
+// ----------------------------------------------------------------------------
+// MyCustomRenderer
+// ----------------------------------------------------------------------------
 
 
-class MyListModel: public wxDataViewIndexListModel
+class MyCustomRenderer: public wxDataViewCustomRenderer
 {
 public:
 {
 public:
-    MyListModel() : 
-#ifdef __WXMAC__
-        wxDataViewIndexListModel( 1000 + 100 )
-#else
-        wxDataViewIndexListModel( 100000 + 100 )
-#endif
-    {
-#ifdef __WXMAC__
-        m_virtualItems = 1000;
-#else
-        m_virtualItems = 100000;
-#endif
-
-        unsigned int i;
-        for (i = 0; i < 100; i++)
-        {
-            wxString str;
-            str.Printf( wxT("row number %d"), i );
-            m_array.Add( str );
-        }
-        
-        m_icon = wxIcon( null_xpm );
-    }
-    
-    // helper methods to change the model
+    MyCustomRenderer( wxDataViewCellMode mode, int alignment ) :
+       wxDataViewCustomRenderer( wxString("long"), mode, alignment )
+       { m_height = 25; }
 
 
-    void Prepend( const wxString &text )
+    virtual bool Render( wxRect rect, wxDC *dc, int WXUNUSED(state) )
     {
     {
-        m_array.Insert( text, 0 );
-        RowPrepended();
+        dc->SetBrush( *wxRED_BRUSH );
+        dc->SetPen( *wxTRANSPARENT_PEN );
+        dc->DrawRectangle( rect.Deflate(2) );
+        return true;
     }
 
     }
 
-    void DeleteItem( const wxDataViewItem &item )
-    {
-        unsigned int row = GetRow( item );
-        if (row >= m_array.GetCount())
-           return;
-           
-        m_array.RemoveAt( row );
-        RowDeleted( row );
-    }
-    
-    void DeleteItems( const wxDataViewItemArray &items )
+    virtual bool Activate( wxRect WXUNUSED(cell),
+                           wxDataViewModel *WXUNUSED(model),
+                           const wxDataViewItem &WXUNUSED(item),
+                           unsigned int WXUNUSED(col) )
     {
     {
-        wxArrayInt rows;
-        unsigned int i;
-        for (i = 0; i < items.GetCount(); i++)
-        {
-            unsigned int row = GetRow( items[i] );
-            if (row < m_array.GetCount())
-                rows.Add( row );
-        }
-
-        // Sort in descending order so that the last
-        // row will be deleted first. Otherwise the
-        // remaining indeces would all be wrong.
-        rows.Sort( my_sort_reverse );
-        for (i = 0; i < rows.GetCount(); i++)
-            m_array.RemoveAt( rows[i] );
-
-        // This is just to test if wxDataViewCtrl can
-        // cope with removing rows not sorted in 
-        // descending order
-        rows.Sort( my_sort );
-        RowsDeleted( rows );
-    }
-    
-    void AddMany()
-    {
-        m_virtualItems += 1000;
-        Reset( m_array.GetCount() + m_virtualItems );
+        wxLogMessage( "MyCustomRenderer Activate()" );
+        return false;
     }
 
     }
 
-    // implementation of base class virtuals to define model
-    
-    virtual unsigned int GetColumnCount() const
+    virtual bool LeftClick( wxPoint cursor, wxRect WXUNUSED(cell),
+                           wxDataViewModel *WXUNUSED(model),
+                           const wxDataViewItem &WXUNUSED(item),
+                           unsigned int WXUNUSED(col) )
     {
     {
-        return 3;
+        wxLogMessage( "MyCustomRenderer LeftClick( %d, %d )", cursor.x, cursor.y );
+        return false;
     }
 
     }
 
-    virtual wxString GetColumnType( unsigned int col ) const
-    {
-        if (col == 1)
-            return wxT("wxDataViewIconText");
-            
-        return wxT("string");
-    }
-    
-    virtual unsigned int GetRowCount()
+    virtual wxSize GetSize() const
     {
     {
-        return m_array.GetCount();
-    }
-    
-    virtual void GetValue( wxVariant &variant, 
-                           unsigned int row, unsigned int col ) const
-    {
-        if (col==0)
-        {
-            if (row >= m_array.GetCount())
-            {
-                wxString str;
-                str.Printf(wxT("row %d"), row - m_array.GetCount() );
-                variant = str;
-            }
-            else
-            {
-                variant = m_array[ row ];
-            }
-        } else
-        if (col==1)
-        {
-            wxDataViewIconText data( wxT("test"), m_icon );
-            variant << data;
-        } else
-        if (col==2)
-        {
-            if (row >= m_array.GetCount())
-                variant = wxT("plain");
-            else
-                variant = wxT("blue");
-        }
-    }
-    
-    virtual bool GetAttr( unsigned int row, unsigned int col, wxDataViewItemAttr &attr )
-    {
-        if (col != 2)
-            return false;
-            
-        if (row < m_array.GetCount())
-        {
-            attr.SetColour( *wxBLUE );
-            attr.SetItalic( true );
-        }
-        
-        return true;            
+        //return wxSize(60,m_height);
+        return wxSize(60,20);
     }
 
     }
 
-    virtual bool SetValue( const wxVariant &variant, 
-                           unsigned int row, unsigned int col )
+    virtual bool SetValue( const wxVariant &value )
     {
     {
-        if (col == 0)
-        {
-            if (row >= m_array.GetCount())
-               return false;
-               
-            m_array[row] = variant.GetString();
-            return true;
-        }
-    
-        return false;
+        m_height = value;
+        return true;
     }
     }
-    
-    wxArrayString    m_array;
-    wxIcon           m_icon;
-    int              m_virtualItems;
-};
 
 
-// -------------------------------------
-// MyApp
-// -------------------------------------
-
-class MyApp: public wxApp
-{
-public:
-    bool OnInit(void);
-    int OnExit();
-};
-
-// -------------------------------------
-// MyFrame
-// -------------------------------------
-
-class MyFrame : public wxFrame
-{
-public:
-    MyFrame(wxFrame *frame, const wxString &title, int x, int y, int w, int h);
-
-public:
-    void OnQuit(wxCommandEvent& event);
-    void OnAbout(wxCommandEvent& event);
-    
-    void OnAddMozart(wxCommandEvent& event);
-    void OnDeleteMusic(wxCommandEvent& event);
-    void OnDeleteYear(wxCommandEvent& event);
-    
-    void OnPrependList(wxCommandEvent& event);
-    void OnDeleteList(wxCommandEvent& event);
-
-    void OnValueChanged( wxDataViewEvent &event );
-    
-    void OnActivated( wxDataViewEvent &event );
-    void OnExpanding( wxDataViewEvent &event );
-    void OnExpanded( wxDataViewEvent &event );
-    void OnCollapsing( wxDataViewEvent &event );
-    void OnCollapsed( wxDataViewEvent &event );
-    void OnSelectionChanged( wxDataViewEvent &event );
-    
-    void OnEditingStarted( wxDataViewEvent &event );
-    void OnEditingDone( wxDataViewEvent &event );
-    
-    void OnHeaderClick( wxDataViewEvent &event );
-    void OnHeaderRightClick( wxDataViewEvent &event );
-    void OnSorted( wxDataViewEvent &event );
-
-    void OnContextMenu( wxDataViewEvent &event );
-
-    void OnRightClick( wxMouseEvent &event );
-    void OnGoto( wxCommandEvent &event);
-    void OnAddMany( wxCommandEvent &event);
+    virtual bool GetValue( wxVariant &WXUNUSED(value) ) const { return true; }
 
 private:
 
 private:
-    wxDataViewCtrl* m_musicCtrl;
-    wxObjectDataPtr<MyMusicModel> m_music_model;
-    
-    wxDataViewCtrl* m_listCtrl;
-    wxObjectDataPtr<MyListModel> m_list_model;
+    long m_height;
+};
 
 
-    wxDataViewColumn * m_col;
-    
-    wxTextCtrl    * m_log;
-    wxLog *m_logOld;
 
 
-private:
-    DECLARE_EVENT_TABLE()
-};
+// ============================================================================
+// implementation
+// ============================================================================
 
 
-// -------------------------------------
+// ----------------------------------------------------------------------------
 // MyApp
 // MyApp
-// -------------------------------------
+// ----------------------------------------------------------------------------
 
 IMPLEMENT_APP(MyApp)
 
 
 IMPLEMENT_APP(MyApp)
 
-bool MyApp::OnInit(void)
+bool MyApp::OnInit()
 {
     if ( !wxApp::OnInit() )
         return false;
 
 {
     if ( !wxApp::OnInit() )
         return false;
 
-    // build the first frame
-    MyFrame *frame = 
-        new MyFrame(NULL, wxT("wxDataViewCtrl feature test"), 40, 40, 800, 540);
-    frame->Show(true);
-
+    MyFrame *frame =
+        new MyFrame(NULL, "wxDataViewCtrl sample", 40, 40, 1000, 540);
     SetTopWindow(frame);
     SetTopWindow(frame);
-    return true;
-}
 
 
-int MyApp::OnExit()
-{
-    return 0;
+    frame->Show(true);
+    return true;
 }
 
 
 }
 
 
-// -------------------------------------
+// ----------------------------------------------------------------------------
 // MyFrame
 // MyFrame
-// -------------------------------------
+// ----------------------------------------------------------------------------
 
 enum
 {
 
 enum
 {
+    ID_CLEARLOG = wxID_HIGHEST+1,
+    ID_STYLE_MENU,
+
     // file menu
     // file menu
-    ID_ABOUT = wxID_ABOUT,
+    //ID_SINGLE,        wxDV_SINGLE==0 so it's always present
+    ID_MULTIPLE,
+    ID_ROW_LINES,
+    ID_HORIZ_RULES,
+    ID_VERT_RULES,
+
     ID_EXIT = wxID_EXIT,
     ID_EXIT = wxID_EXIT,
-    
+
+    // about menu
+    ID_ABOUT = wxID_ABOUT,
+
+
+    // control IDs
+
     ID_MUSIC_CTRL       = 50,
     ID_MUSIC_CTRL       = 50,
-    
+
     ID_ADD_MOZART       = 100,
     ID_DELETE_MUSIC     = 101,
     ID_DELETE_YEAR      = 102,
     ID_ADD_MOZART       = 100,
     ID_DELETE_MUSIC     = 101,
     ID_DELETE_YEAR      = 102,
-     
+    ID_SELECT_NINTH     = 103,
+    ID_COLLAPSE         = 104,
+    ID_EXPAND           = 105,
+
     ID_PREPEND_LIST     = 200,
     ID_DELETE_LIST      = 201,
     ID_GOTO             = 202,
     ID_PREPEND_LIST     = 200,
     ID_DELETE_LIST      = 201,
     ID_GOTO             = 202,
@@ -642,34 +260,48 @@ enum
 };
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 };
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
-    EVT_MENU( ID_ABOUT, MyFrame::OnAbout )
+    EVT_MENU_RANGE( ID_MULTIPLE, ID_VERT_RULES, MyFrame::OnStyleChange )
     EVT_MENU( ID_EXIT, MyFrame::OnQuit )
     EVT_MENU( ID_EXIT, MyFrame::OnQuit )
+    EVT_MENU( ID_ABOUT, MyFrame::OnAbout )
+    EVT_MENU( ID_CLEARLOG, MyFrame::OnClearLog )
+
+    EVT_NOTEBOOK_PAGE_CHANGED( wxID_ANY, MyFrame::OnPageChanged )
+
     EVT_BUTTON( ID_ADD_MOZART, MyFrame::OnAddMozart )
     EVT_BUTTON( ID_DELETE_MUSIC, MyFrame::OnDeleteMusic )
     EVT_BUTTON( ID_DELETE_YEAR, MyFrame::OnDeleteYear )
     EVT_BUTTON( ID_ADD_MOZART, MyFrame::OnAddMozart )
     EVT_BUTTON( ID_DELETE_MUSIC, MyFrame::OnDeleteMusic )
     EVT_BUTTON( ID_DELETE_YEAR, MyFrame::OnDeleteYear )
+    EVT_BUTTON( ID_SELECT_NINTH, MyFrame::OnSelectNinth )
+    EVT_BUTTON( ID_COLLAPSE, MyFrame::OnCollapse )
+    EVT_BUTTON( ID_EXPAND, MyFrame::OnExpand )
+
     EVT_BUTTON( ID_PREPEND_LIST, MyFrame::OnPrependList )
     EVT_BUTTON( ID_DELETE_LIST, MyFrame::OnDeleteList )
     EVT_BUTTON( ID_GOTO, MyFrame::OnGoto)
     EVT_BUTTON( ID_ADD_MANY, MyFrame::OnAddMany)
     EVT_BUTTON( ID_PREPEND_LIST, MyFrame::OnPrependList )
     EVT_BUTTON( ID_DELETE_LIST, MyFrame::OnDeleteList )
     EVT_BUTTON( ID_GOTO, MyFrame::OnGoto)
     EVT_BUTTON( ID_ADD_MANY, MyFrame::OnAddMany)
-    
+
     EVT_DATAVIEW_ITEM_VALUE_CHANGED( ID_MUSIC_CTRL, MyFrame::OnValueChanged )
     EVT_DATAVIEW_ITEM_VALUE_CHANGED( ID_MUSIC_CTRL, MyFrame::OnValueChanged )
-    
+
     EVT_DATAVIEW_ITEM_ACTIVATED(ID_MUSIC_CTRL, MyFrame::OnActivated )
     EVT_DATAVIEW_ITEM_EXPANDING(ID_MUSIC_CTRL, MyFrame::OnExpanding)
     EVT_DATAVIEW_ITEM_EXPANDED(ID_MUSIC_CTRL, MyFrame::OnExpanded)
     EVT_DATAVIEW_ITEM_COLLAPSING(ID_MUSIC_CTRL, MyFrame::OnCollapsing)
     EVT_DATAVIEW_ITEM_COLLAPSED(ID_MUSIC_CTRL, MyFrame::OnCollapsed)
     EVT_DATAVIEW_SELECTION_CHANGED(ID_MUSIC_CTRL, MyFrame::OnSelectionChanged)
     EVT_DATAVIEW_ITEM_ACTIVATED(ID_MUSIC_CTRL, MyFrame::OnActivated )
     EVT_DATAVIEW_ITEM_EXPANDING(ID_MUSIC_CTRL, MyFrame::OnExpanding)
     EVT_DATAVIEW_ITEM_EXPANDED(ID_MUSIC_CTRL, MyFrame::OnExpanded)
     EVT_DATAVIEW_ITEM_COLLAPSING(ID_MUSIC_CTRL, MyFrame::OnCollapsing)
     EVT_DATAVIEW_ITEM_COLLAPSED(ID_MUSIC_CTRL, MyFrame::OnCollapsed)
     EVT_DATAVIEW_SELECTION_CHANGED(ID_MUSIC_CTRL, MyFrame::OnSelectionChanged)
-    
+
+    EVT_DATAVIEW_ITEM_START_EDITING(ID_MUSIC_CTRL, MyFrame::OnStartEditing)
     EVT_DATAVIEW_ITEM_EDITING_STARTED(ID_MUSIC_CTRL, MyFrame::OnEditingStarted)
     EVT_DATAVIEW_ITEM_EDITING_DONE(ID_MUSIC_CTRL, MyFrame::OnEditingDone)
     EVT_DATAVIEW_ITEM_EDITING_STARTED(ID_MUSIC_CTRL, MyFrame::OnEditingStarted)
     EVT_DATAVIEW_ITEM_EDITING_DONE(ID_MUSIC_CTRL, MyFrame::OnEditingDone)
-    
+
     EVT_DATAVIEW_COLUMN_HEADER_CLICK(ID_MUSIC_CTRL, MyFrame::OnHeaderClick)
     EVT_DATAVIEW_COLUMN_HEADER_RIGHT_CLICKED(ID_MUSIC_CTRL, MyFrame::OnHeaderRightClick)
     EVT_DATAVIEW_COLUMN_SORTED(ID_MUSIC_CTRL, MyFrame::OnSorted)
 
     EVT_DATAVIEW_ITEM_CONTEXT_MENU(ID_MUSIC_CTRL, MyFrame::OnContextMenu)
     EVT_DATAVIEW_COLUMN_HEADER_CLICK(ID_MUSIC_CTRL, MyFrame::OnHeaderClick)
     EVT_DATAVIEW_COLUMN_HEADER_RIGHT_CLICKED(ID_MUSIC_CTRL, MyFrame::OnHeaderRightClick)
     EVT_DATAVIEW_COLUMN_SORTED(ID_MUSIC_CTRL, MyFrame::OnSorted)
 
     EVT_DATAVIEW_ITEM_CONTEXT_MENU(ID_MUSIC_CTRL, MyFrame::OnContextMenu)
-    
+
+    EVT_DATAVIEW_ITEM_BEGIN_DRAG( ID_MUSIC_CTRL, MyFrame::OnBeginDrag )
+    EVT_DATAVIEW_ITEM_DROP_POSSIBLE( ID_MUSIC_CTRL, MyFrame::OnDropPossible )
+    EVT_DATAVIEW_ITEM_DROP( ID_MUSIC_CTRL, MyFrame::OnDrop )
+
     EVT_RIGHT_UP(MyFrame::OnRightClick)
 END_EVENT_TABLE()
 
     EVT_RIGHT_UP(MyFrame::OnRightClick)
 END_EVENT_TABLE()
 
@@ -679,151 +311,460 @@ MyFrame::MyFrame(wxFrame *frame, const wxString &title, int x, int y, int w, int
     m_log = NULL;
     m_col = NULL;
 
     m_log = NULL;
     m_col = NULL;
 
+    m_ctrl[0] = NULL;
+    m_ctrl[1] = NULL;
+    m_ctrl[2] = NULL;
+    m_ctrl[3] = NULL;
+
     SetIcon(wxICON(sample));
 
     SetIcon(wxICON(sample));
 
-    // build the menus:
+
+    // build the menus
+    // ----------------
+
+    wxMenu *style_menu = new wxMenu;
+    //style_menu->AppendCheckItem(ID_SINGLE, "Single selection"));
+    style_menu->AppendCheckItem(ID_MULTIPLE, "Multiple selection");
+    style_menu->AppendCheckItem(ID_ROW_LINES, "Alternating colours");
+    style_menu->AppendCheckItem(ID_HORIZ_RULES, "Display horizontal rules");
+    style_menu->AppendCheckItem(ID_VERT_RULES, "Display vertical rules");
 
     wxMenu *file_menu = new wxMenu;
 
     wxMenu *file_menu = new wxMenu;
-    file_menu->Append(ID_ABOUT, wxT("&About"));
+    file_menu->Append(ID_CLEARLOG, "Clear log");
+    file_menu->Append(ID_STYLE_MENU, "&Style", style_menu);
     file_menu->AppendSeparator();
     file_menu->AppendSeparator();
-    file_menu->Append(ID_EXIT, wxT("E&xit"));
+    file_menu->Append(ID_EXIT, "E&xit");
+
+    wxMenu *about_menu = new wxMenu;
+    about_menu->Append(ID_ABOUT, "&About");
 
     wxMenuBar *menu_bar = new wxMenuBar;
 
     wxMenuBar *menu_bar = new wxMenuBar;
-    menu_bar->Append(file_menu, wxT("&File"));
+    menu_bar->Append(file_menu, "&File");
+    menu_bar->Append(about_menu, "&About");
 
     SetMenuBar(menu_bar);
     CreateStatusBar();
 
 
     SetMenuBar(menu_bar);
     CreateStatusBar();
 
-    wxBoxSizer *main_sizer = new wxBoxSizer( wxVERTICAL );
 
 
-    wxBoxSizer *data_sizer = new wxBoxSizer( wxHORIZONTAL );
+    // first page of the notebook
+    // --------------------------
+
+    m_notebook = new wxNotebook( this, wxID_ANY );
+
+    wxPanel *firstPanel = new wxPanel( m_notebook, wxID_ANY );
+
+    BuildDataViewCtrl(firstPanel, 0);    // sets m_ctrl[0]
+
+    wxBoxSizer *button_sizer = new wxBoxSizer( wxHORIZONTAL );
+    button_sizer->Add( new wxButton( firstPanel, ID_ADD_MOZART,  "Add Mozart"),             0, wxALL, 10 );
+    button_sizer->Add( new wxButton( firstPanel, ID_DELETE_MUSIC,"Delete selected"),        0, wxALL, 10 );
+    button_sizer->Add( new wxButton( firstPanel, ID_DELETE_YEAR, "Delete \"Year\" column"), 0, wxALL, 10 );
+    button_sizer->Add( new wxButton( firstPanel, ID_SELECT_NINTH,"Select ninth symphony"),  0, wxALL, 10 );
+    button_sizer->Add( new wxButton( firstPanel, ID_COLLAPSE,    "Collapse"),               0, wxALL, 10 );
+    button_sizer->Add( new wxButton( firstPanel, ID_EXPAND,      "Expand"),                 0, wxALL, 10 );
+
+    wxSizer *firstPanelSz = new wxBoxSizer( wxVERTICAL );
+    m_ctrl[0]->SetMinSize(wxSize(-1, 200));
+    firstPanelSz->Add(m_ctrl[0], 1, wxGROW|wxALL, 5);
+    firstPanelSz->Add(
+        new wxStaticText(firstPanel, wxID_ANY, "Most of the cells above are editable!"),
+        0, wxGROW|wxALL, 5);
+    firstPanelSz->Add(button_sizer);
+    firstPanel->SetSizerAndFit(firstPanelSz);
+
+
+    // second page of the notebook
+    // ---------------------------
+
+    wxPanel *secondPanel = new wxPanel( m_notebook, wxID_ANY );
+
+    BuildDataViewCtrl(secondPanel, 1);    // sets m_ctrl[1]
+
+    wxBoxSizer *button_sizer2 = new wxBoxSizer( wxHORIZONTAL );
+    button_sizer2->Add( new wxButton( secondPanel, ID_PREPEND_LIST,"Prepend"),         0, wxALL, 10 );
+    button_sizer2->Add( new wxButton( secondPanel, ID_DELETE_LIST, "Delete selected"), 0, wxALL, 10 );
+    button_sizer2->Add( new wxButton( secondPanel, ID_GOTO,        "Goto 50"),         0, wxALL, 10 );
+    button_sizer2->Add( new wxButton( secondPanel, ID_ADD_MANY,    "Add 1000"),        0, wxALL, 10 );
+
+    wxSizer *secondPanelSz = new wxBoxSizer( wxVERTICAL );
+    secondPanelSz->Add(m_ctrl[1], 1, wxGROW|wxALL, 5);
+    secondPanelSz->Add(button_sizer2);
+    secondPanel->SetSizerAndFit(secondPanelSz);
 
 
-    // MyMusic
 
 
-    m_musicCtrl = new wxDataViewCtrl( this, ID_MUSIC_CTRL, wxDefaultPosition,
-                                    wxDefaultSize, wxDV_MULTIPLE );
+    // third page of the notebook
+    // ---------------------------
 
 
-    m_music_model = new MyMusicModel;
-    m_musicCtrl->AssociateModel( m_music_model.get() );
+    wxPanel *thirdPanel = new wxPanel( m_notebook, wxID_ANY );
+
+    BuildDataViewCtrl(thirdPanel, 2);    // sets m_ctrl[2]
+
+    wxSizer *thirdPanelSz = new wxBoxSizer( wxVERTICAL );
+    thirdPanelSz->Add(m_ctrl[2], 1, wxGROW|wxALL, 5);
+    thirdPanel->SetSizerAndFit(thirdPanelSz);
+
+
+    // fourth page of the notebook
+    // ---------------------------
+
+    wxPanel *fourthPanel = new wxPanel( m_notebook, wxID_ANY );
+
+    BuildDataViewCtrl(fourthPanel, 3);    // sets m_ctrl[3]
+
+    wxSizer *fourthPanelSz = new wxBoxSizer( wxVERTICAL );
+    fourthPanelSz->Add(m_ctrl[3], 1, wxGROW|wxALL, 5);
+    fourthPanel->SetSizerAndFit(fourthPanelSz);
+
+
+
+    // complete GUI
+    // ------------
+
+    m_notebook->AddPage(firstPanel, "MyMusicTreeModel");
+    m_notebook->AddPage(secondPanel, "MyListModel");
+    m_notebook->AddPage(thirdPanel, "wxDataViewListCtrl");
+    m_notebook->AddPage(fourthPanel, "wxDataViewTreeCtrl");
+
+    wxSizer* mainSizer = new wxBoxSizer(wxVERTICAL);
+
+    m_log = new wxTextCtrl( this, wxID_ANY, wxString(), wxDefaultPosition,
+                            wxDefaultSize, wxTE_MULTILINE );
+    m_log->SetMinSize(wxSize(-1, 100));
+    m_logOld = wxLog::SetActiveTarget(new wxLogTextCtrl(m_log));
+    wxLogMessage( "This is the log window" );
 
 
-#if 0 
-    // Call this and sorting is enabled
-    // immediatly upon start up.                                    
-    wxDataViewColumn *col = m_musicCtrl->AppendTextColumn( wxT("Title"), 0, wxDATAVIEW_CELL_INERT, 200, 
-                                     DEFAULT_ALIGN, wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE);
-    col->SetSortOrder( true );
+    mainSizer->Add( m_notebook, 1, wxGROW );
+    mainSizer->Add( m_log, 0, wxGROW );
+    
+    SetSizerAndFit(mainSizer);
+}
+
+MyFrame::~MyFrame()
+{
+    delete wxLog::SetActiveTarget(m_logOld);
+}
+
+void MyFrame::BuildDataViewCtrl(wxPanel* parent, unsigned int nPanel, unsigned long style)
+{
+    switch (nPanel)
+    {
+    case 0:
+        {
+            wxASSERT(!m_ctrl[0] && !m_music_model);
+            m_ctrl[0] =
+                new wxDataViewCtrl( parent, ID_MUSIC_CTRL, wxDefaultPosition,
+                                    wxDefaultSize, style );
+
+            m_music_model = new MyMusicTreeModel;
+            m_ctrl[0]->AssociateModel( m_music_model.get() );
+
+            m_ctrl[0]->EnableDragSource( wxDF_UNICODETEXT );
+            m_ctrl[0]->EnableDropTarget( wxDF_UNICODETEXT );
+
+            // column 0 of the view control:
+
+            wxDataViewTextRenderer *tr =
+                new wxDataViewTextRenderer( "string", wxDATAVIEW_CELL_INERT );
+            wxDataViewColumn *column0 =
+                new wxDataViewColumn( "title", tr, 0, 200, wxALIGN_LEFT,
+                                      wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_RESIZABLE );
+            m_ctrl[0]->AppendColumn( column0 );
+#if 0
+            // Call this and sorting is enabled
+            // immediatly upon start up.
+            column0->SetAsSortKey();
+#endif
+
+            // column 1 of the view control:
+
+            tr = new wxDataViewTextRenderer( "string", wxDATAVIEW_CELL_EDITABLE );
+            wxDataViewColumn *column1 =
+                new wxDataViewColumn( "artist", tr, 1, 150, wxALIGN_LEFT,
+                                      wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE |
+                                      wxDATAVIEW_COL_RESIZABLE );
+            column1->SetMinWidth(150); // this column can't be resized to be smaller
+            m_ctrl[0]->AppendColumn( column1 );
+
+            // column 2 of the view control:
+
+            wxDataViewSpinRenderer *sr =
+                new wxDataViewSpinRenderer( 0, 2010, wxDATAVIEW_CELL_EDITABLE, wxALIGN_RIGHT );
+            wxDataViewColumn *column2 =
+                new wxDataViewColumn( "year", sr, 2, 60, wxALIGN_LEFT,
+                                      wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE );
+            m_ctrl[0]->AppendColumn( column2 );
+
+            // column 3 of the view control:
+
+            wxArrayString choices;
+            choices.Add( "good" );
+            choices.Add( "bad" );
+            choices.Add( "lousy" );
+            wxDataViewChoiceRenderer *c =
+                new wxDataViewChoiceRenderer( choices, wxDATAVIEW_CELL_EDITABLE, wxALIGN_RIGHT );
+            wxDataViewColumn *column3 =
+                new wxDataViewColumn( "rating", c, 3, 100, wxALIGN_LEFT,
+                                      wxDATAVIEW_COL_REORDERABLE | wxDATAVIEW_COL_RESIZABLE );
+            m_ctrl[0]->AppendColumn( column3 );
+
+            // column 4 of the view control:
+
+            m_ctrl[0]->AppendProgressColumn( "popularity", 4, wxDATAVIEW_CELL_INERT, 80 );
+
+            // column 5 of the view control:
+
+            MyCustomRenderer *cr = new MyCustomRenderer( wxDATAVIEW_CELL_ACTIVATABLE, wxALIGN_RIGHT );
+            wxDataViewColumn *column5 =
+                new wxDataViewColumn( "custom", cr, 5, -1, wxALIGN_LEFT,
+                                      wxDATAVIEW_COL_RESIZABLE );
+            m_ctrl[0]->AppendColumn( column5 );
+
+
+            // select initially the ninth symphony:
+            m_ctrl[0]->Select(m_music_model->GetNinthItem());
+        }
+        break;
+
+    case 1:
+        {
+            wxASSERT(!m_ctrl[1] && !m_list_model);
+            m_ctrl[1] = new wxDataViewCtrl( parent, wxID_ANY, wxDefaultPosition,
+                                            wxDefaultSize, style );
+
+            m_list_model = new MyListModel;
+            m_ctrl[1]->AssociateModel( m_list_model.get() );
+
+            // the various columns
+#if 1
+            m_ctrl[1]->AppendTextColumn("editable string", 0, wxDATAVIEW_CELL_EDITABLE, 120);
+            m_ctrl[1]->AppendIconTextColumn(wxIcon(wx_small_xpm), 1, wxDATAVIEW_CELL_INERT )->SetTitle( "icon");
 #else
 #else
-    m_musicCtrl->AppendTextColumn(wxT("Title"),0,wxDATAVIEW_CELL_INERT,200,DEFAULT_ALIGN,wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE);
+            m_ctrl[1]->AppendTextColumn("editable string", 0, wxDATAVIEW_CELL_EDITABLE);
+            m_ctrl[1]->AppendIconTextColumn("icon", 1, wxDATAVIEW_CELL_INERT);
 #endif
 #endif
-    
-    m_musicCtrl->AppendTextColumn( wxT("Artist"), 1, wxDATAVIEW_CELL_EDITABLE, 150,
-                                     DEFAULT_ALIGN, wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE);
+            m_ctrl[1]->AppendColumn(
+                new wxDataViewColumn("attributes", new wxDataViewTextRendererAttr, 2 ));
+        }
+        break;
 
 
-    wxDataViewSpinRenderer *sr = new wxDataViewSpinRenderer( 0, 2010 );
-    wxDataViewColumn *column = new wxDataViewColumn( wxT("year"), sr, 2, -1, wxALIGN_CENTRE, wxDATAVIEW_COL_SORTABLE | wxDATAVIEW_COL_REORDERABLE);
-    m_musicCtrl->AppendColumn( column );
+    case 2:
+        {
+            wxASSERT(!m_ctrl[2]);
+            wxDataViewListCtrl* lc =
+                new wxDataViewListCtrl( parent, wxID_ANY, wxDefaultPosition,
+                                        wxDefaultSize, style );
+            m_ctrl[2] = lc;
+
+            lc->AppendToggleColumn( "Toggle" );
+            lc->AppendTextColumn( "Text" );
+            lc->AppendProgressColumn( "Progress" );
+
+            wxVector<wxVariant> data;
+            for (unsigned int i=0; i<10; i++)
+            {
+                data.clear();
+                data.push_back( (i%3) == 0 );
+                data.push_back( wxString::Format("row %d", i) );
+                data.push_back( long(5*i) );
 
 
-    data_sizer->Add( m_musicCtrl, 3, wxGROW );
-    
-#if 1   
-    
-    // MyList
-    
-    m_listCtrl = new wxDataViewCtrl( this, wxID_ANY, wxDefaultPosition,
-                                     wxDefaultSize, wxDV_MULTIPLE | wxDV_ROW_LINES); 
-    
-    m_list_model = new MyListModel;
-    m_listCtrl->AssociateModel( m_list_model.get() );
-    
-    m_listCtrl->AppendTextColumn    (wxT("editable string"), 0, wxDATAVIEW_CELL_EDITABLE, 120 );
-    m_listCtrl->AppendIconTextColumn(wxT("icon"),            1, wxDATAVIEW_CELL_INERT,     60 );
-    
-    wxDataViewTextRendererAttr *ra = new wxDataViewTextRendererAttr;
-    column = new wxDataViewColumn(wxT("attributes"), ra, 2 );
-    m_listCtrl->AppendColumn( column );
-    
-    data_sizer->Add( m_listCtrl, 2, wxGROW );
- 
-#endif   
+                lc->AppendItem( data );
+            }
+        }
+        break;
 
 
-    main_sizer->Add( data_sizer, 2, wxGROW );
-    
-    wxBoxSizer *button_sizer = new wxBoxSizer( wxHORIZONTAL );
-    
-    button_sizer->Add( new wxButton( this, ID_ADD_MOZART,  _("Add Mozart")),             0, wxALL, 10 );
-    button_sizer->Add( new wxButton( this, ID_DELETE_MUSIC,_("Delete selected")),        0, wxALL, 10 );
-    button_sizer->Add( new wxButton( this, ID_DELETE_YEAR, _("Delete \"Year\" column")), 0, wxALL, 10 );
-    button_sizer->Add( 10, 10, 1 );
-    wxFlexGridSizer *grid_sizer = new wxFlexGridSizer( 2, 2 );
-    grid_sizer->Add( new wxButton( this, ID_PREPEND_LIST,_("Prepend")),         0, wxALL, 2 );
-    grid_sizer->Add( new wxButton( this, ID_DELETE_LIST, _("Delete selected")), 0, wxALL, 2 );
-    grid_sizer->Add( new wxButton( this, ID_GOTO,        _("Goto 50")),         0, wxALL, 2 );
-    grid_sizer->Add( new wxButton( this, ID_ADD_MANY,    _("Add 1000")),        0, wxALL, 2 );
-    button_sizer->Add( grid_sizer, 0, wxALL, 10 );
-    
-    main_sizer->Add( button_sizer, 0, wxGROW, 0 );
+    case 3:
+        {
+            wxASSERT(!m_ctrl[3]);
+            wxDataViewTreeCtrl* tc =
+                new wxDataViewTreeCtrl( parent, wxID_ANY, wxDefaultPosition,
+                                        wxDefaultSize, style );
+            m_ctrl[3] = tc;
+
+            wxImageList *ilist = new wxImageList( 16, 16 );
+            ilist->Add( wxIcon(wx_small_xpm) );
+            tc->SetImageList( ilist );
+
+            wxDataViewItem parent =
+                tc->AppendContainer( wxDataViewItem(0), "The Root", 0 );
+            tc->AppendItem( parent, "Child 1", 0 );
+            tc->AppendItem( parent, "Child 2", 0 );
+            tc->AppendItem( parent, "Child 3, very long, long, long, long", 0 );
+
+            wxDataViewItem cont =
+                tc->AppendContainer( parent, "Container child", 0 );
+            tc->AppendItem( cont, "Child 4", 0 );
+            tc->AppendItem( cont, "Child 5", 0 );
+
+            tc->Expand(cont);
+        }
+        break;
+    }
+}
 
 
-    wxBoxSizer *bottom_sizer = new wxBoxSizer( wxHORIZONTAL );
-    
-    m_log = new wxTextCtrl( this, -1,wxString(), wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE );
-    m_logOld = wxLog::SetActiveTarget(new wxLogTextCtrl(m_log));
-    wxLogMessage(_("This is the log window"));
 
 
-    bottom_sizer->Add( m_log, 1, wxGROW );
- 
-    // wxDataViewTreeStore
+// ----------------------------------------------------------------------------
+// MyFrame - generic event handlers
+// ----------------------------------------------------------------------------
 
 
-    wxDataViewCtrl *treectrl = new wxDataViewCtrl( this, -1, 
-        wxDefaultPosition, wxSize(300,200), wxDV_NO_HEADER );
-        
-    wxDataViewTreeStore *store = new wxDataViewTreeStore;
-    wxDataViewItem parent = store->AppendContainer( wxDataViewItem(0),wxT("Root 1"), wxIcon(small1_xpm) );
-    wxDataViewItem child = store->AppendItem( parent,wxT("Child 1"), wxIcon(small1_xpm) );
-    child = store->AppendItem( parent,wxT("Child 2"), wxIcon(small1_xpm) );
-    child = store->AppendItem( parent,wxT("Child 3"), wxIcon(small1_xpm) );
-    treectrl->AssociateModel( store );
-    store->DecRef();
+void MyFrame::OnClearLog( wxCommandEvent& WXUNUSED(event) )
+{
+    m_log->Clear();
+}
 
 
-    treectrl->AppendIconTextColumn(wxT("no label"), 0, wxDATAVIEW_CELL_INERT, 200 );
+void MyFrame::OnPageChanged( wxBookCtrlEvent& WXUNUSED(event) )
+{
+    unsigned int nPanel = m_notebook->GetSelection();
 
 
-    bottom_sizer->Add( treectrl );
+    GetMenuBar()->FindItem(ID_STYLE_MENU)->SetItemLabel(
+                wxString::Format("Style of panel #%d", nPanel+1));
 
 
-    // wxDataViewTreeCtrl
+    for (unsigned int id = ID_MULTIPLE; id <= ID_VERT_RULES; id++)
+    {
+        unsigned long style = 0;
+        switch (id)
+        {
+        /*case ID_SINGLE:
+            style = wxDV_SINGLE;
+            break;*/
+        case ID_MULTIPLE:
+            style = wxDV_MULTIPLE;
+            break;
+        case ID_ROW_LINES:
+            style = wxDV_ROW_LINES;
+            break;
+        case ID_HORIZ_RULES:
+            style = wxDV_HORIZ_RULES;
+            break;
+        case ID_VERT_RULES:
+            style = wxDV_VERT_RULES;
+            break;
+        default:
+            wxFAIL;
+        }
 
 
-    wxDataViewTreeCtrl *treectrl2 = new wxDataViewTreeCtrl( this, -1, wxDefaultPosition, wxSize(300,200) );
-    
-    wxImageList *ilist = new wxImageList( 16, 16 );
-    ilist->Add( wxIcon(small1_xpm) );
-    treectrl2->SetImageList( ilist );
-    
-    parent = treectrl2->AppendContainer( wxDataViewItem(0),wxT("Root 1"), 0 );
-    child = treectrl2->AppendItem( parent,wxT("Child 1"), 0 );
-    child = treectrl2->AppendItem( parent,wxT("Child 2"), 0 );
-    child = treectrl2->AppendItem( parent,wxT("Child 3"), 0 );
-    
-    bottom_sizer->Add( treectrl2 );
-    
-    // main sizer
-    
-    main_sizer->Add( bottom_sizer, 0, wxGROW );
-    
-    SetSizer( main_sizer );
+        GetMenuBar()->FindItem(id)->Check( m_ctrl[nPanel]->HasFlag(style) );
+    }
+}
+
+void MyFrame::OnStyleChange( wxCommandEvent& WXUNUSED(event) )
+{
+    unsigned int nPanel = m_notebook->GetSelection();
+
+    // build the style
+    unsigned long style = 0;
+    /*if (GetMenuBar()->FindItem(ID_SINGLE)->IsChecked())
+        style |= wxDV_SINGLE;*/
+    if (GetMenuBar()->FindItem(ID_MULTIPLE)->IsChecked())
+        style |= wxDV_MULTIPLE;
+    if (GetMenuBar()->FindItem(ID_ROW_LINES)->IsChecked())
+        style |= wxDV_ROW_LINES;
+    if (GetMenuBar()->FindItem(ID_HORIZ_RULES)->IsChecked())
+        style |= wxDV_HORIZ_RULES;
+    if (GetMenuBar()->FindItem(ID_VERT_RULES)->IsChecked())
+        style |= wxDV_VERT_RULES;
+
+    wxSizer* sz = m_ctrl[nPanel]->GetContainingSizer();
+    wxASSERT(sz);
+
+    sz->Detach(m_ctrl[nPanel]);
+    wxDELETE(m_ctrl[nPanel]);
+    m_ctrl[nPanel] = NULL;
+
+    if (nPanel == 0)
+        m_music_model.reset(NULL);
+    else if (nPanel == 1)
+        m_list_model.reset(NULL);
+
+    // rebuild the DVC for the selected panel:
+    BuildDataViewCtrl((wxPanel*)m_notebook->GetPage(nPanel), nPanel, style);
+
+    sz->Prepend(m_ctrl[nPanel], 1, wxGROW|wxALL, 5);
+    sz->Layout();
 }
 
 }
 
-void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnQuit( wxCommandEvent& WXUNUSED(event) )
 {
     Close(true);
 }
 
 {
     Close(true);
 }
 
-void MyFrame::OnAddMozart(wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnAbout( wxCommandEvent& WXUNUSED(event) )
 {
 {
-    m_music_model->AddToClassical( wxT("Kleine Nachtmusik"), wxT("Wolfgang Mozart"), 1787 );
+    wxAboutDialogInfo info;
+    info.SetName(_("DataView sample"));
+    info.SetDescription(_("This sample demonstrates wxDataViewCtrl"));
+    info.SetCopyright(_T("(C) 2007-2009 Robert Roebling"));
+    info.AddDeveloper("Robert Roebling");
+    info.AddDeveloper("Francesco Montorsi");
+
+    wxAboutBox(info);
 }
 
 }
 
-void MyFrame::OnDeleteMusic(wxCommandEvent& WXUNUSED(event) )
+
+// ----------------------------------------------------------------------------
+// MyFrame - event handlers for the first page
+// ----------------------------------------------------------------------------
+
+void MyFrame::OnBeginDrag( wxDataViewEvent &event )
+{
+    wxDataViewItem item( event.GetItem() );
+
+    // only allow drags for item, not containers
+    if (m_music_model->IsContainer( item ) )
+    {
+        event.Veto();
+        return;
+    }
+
+    MyMusicTreeModelNode *node = (MyMusicTreeModelNode*) item.GetID();
+    wxTextDataObject *obj = new wxTextDataObject;
+    obj->SetText( node->m_title );
+    event.SetDataObject( obj );
+}
+
+void MyFrame::OnDropPossible( wxDataViewEvent &event )
+{
+    wxDataViewItem item( event.GetItem() );
+
+    // only allow drags for item, not containers
+    if (m_music_model->IsContainer( item ) )
+        event.Veto();
+
+    if (event.GetDataFormat() != wxDF_UNICODETEXT)
+        event.Veto();
+}
+
+void MyFrame::OnDrop( wxDataViewEvent &event )
+{
+    wxDataViewItem item( event.GetItem() );
+
+    // only allow drops for item, not containers
+    if (m_music_model->IsContainer( item ) )
+    {
+        event.Veto();
+        return;
+    }
+
+    if (event.GetDataFormat() != wxDF_UNICODETEXT)
+    {
+        event.Veto();
+        return;
+    }
+
+    wxTextDataObject obj;
+    obj.SetData( wxDF_UNICODETEXT, event.GetDataSize(), event.GetDataBuffer() );
+
+    wxLogMessage( "Text dropped: %s", obj.GetText() );
+}
+
+void MyFrame::OnAddMozart( wxCommandEvent& WXUNUSED(event) )
+{
+    m_music_model->AddToClassical( "Kleine Nachtmusik", "Wolfgang Mozart", 1787 );
+}
+
+void MyFrame::OnDeleteMusic( wxCommandEvent& WXUNUSED(event) )
 {
     wxDataViewItemArray items;
 {
     wxDataViewItemArray items;
-    int len = m_musicCtrl->GetSelections( items );
+    int len = m_ctrl[0]->GetSelections( items );
     for( int i = 0; i < len; i ++ )
         if (items[i].IsOk())
             m_music_model->Delete( items[i] );
     for( int i = 0; i < len; i ++ )
         if (items[i].IsOk())
             m_music_model->Delete( items[i] );
@@ -831,29 +772,42 @@ void MyFrame::OnDeleteMusic(wxCommandEvent& WXUNUSED(event) )
 
 void MyFrame::OnDeleteYear( wxCommandEvent& WXUNUSED(event) )
 {
 
 void MyFrame::OnDeleteYear( wxCommandEvent& WXUNUSED(event) )
 {
-    m_musicCtrl->DeleteColumn( m_musicCtrl->GetColumn( 2 ) );
+    m_ctrl[0]->DeleteColumn( m_ctrl[0]->GetColumn( 2 ) );
     FindWindow( ID_DELETE_YEAR )->Disable();
 }
 
     FindWindow( ID_DELETE_YEAR )->Disable();
 }
 
-void MyFrame::OnPrependList( wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnSelectNinth( wxCommandEvent& WXUNUSED(event) )
 {
 {
-    m_list_model->Prepend(wxT("Test"));
+    if (!m_music_model->GetNinthItem().IsOk())
+    {
+        wxLogError( "Cannot select the ninth symphony: it was removed!" );
+        return;
+    }
+
+    m_ctrl[0]->Select( m_music_model->GetNinthItem() );
 }
 
 }
 
-void MyFrame::OnDeleteList( wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnCollapse( wxCommandEvent& WXUNUSED(event) )
 {
 {
-    wxDataViewItemArray items;
-    int len = m_listCtrl->GetSelections( items );
-    if (len > 0)
-        m_list_model->DeleteItems( items );
+    wxDataViewItem item = m_ctrl[0]->GetSelection();
+    if (item.IsOk())
+        m_ctrl[0]->Collapse( item );
+}
+
+void MyFrame::OnExpand( wxCommandEvent& WXUNUSED(event) )
+{
+    wxDataViewItem item = m_ctrl[0]->GetSelection();
+    if (item.IsOk())
+        m_ctrl[0]->Expand( item );
 }
 
 void MyFrame::OnValueChanged( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnValueChanged( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
-    wxLogMessage( wxT("EVT_DATAVIEW_ITEM_VALUE_CHANGED, Item Id: %d;  Column: %d"), event.GetItem().GetID(), event.GetColumn() );
+
+    wxLogMessage( "wxEVT_DATAVIEW_ITEM_VALUE_CHANGED, Item Id: %d;  Column: %d",
+                  event.GetItem().GetID(), event.GetColumn() );
 }
 
 void MyFrame::OnActivated( wxDataViewEvent &event )
 }
 
 void MyFrame::OnActivated( wxDataViewEvent &event )
@@ -862,7 +816,10 @@ void MyFrame::OnActivated( wxDataViewEvent &event )
         return;
 
     wxString title = m_music_model->GetTitle( event.GetItem() );
         return;
 
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, Item: %s"), title.GetData());
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, Item: %s", title );
+
+    if (m_ctrl[0]->IsExpanded( event.GetItem() ))
+        wxLogMessage( "Item: %s is expanded", title );
 }
 
 void MyFrame::OnSelectionChanged( wxDataViewEvent &event )
 }
 
 void MyFrame::OnSelectionChanged( wxDataViewEvent &event )
@@ -872,83 +829,109 @@ void MyFrame::OnSelectionChanged( wxDataViewEvent &event )
 
     wxString title = m_music_model->GetTitle( event.GetItem() );
     if (title.empty())
 
     wxString title = m_music_model->GetTitle( event.GetItem() );
     if (title.empty())
-        title = wxT("None");
-        
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, First selected Item: %s"), title.GetData() );
+        title = "None";
+
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, First selected Item: %s", title );
 }
 
 void MyFrame::OnExpanding( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnExpanding( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, Item: %s"), title.GetData() );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, Item: %s", title );
 }
 
 
 }
 
 
+void MyFrame::OnStartEditing( wxDataViewEvent &event )
+{
+    wxString artist = m_music_model->GetArtist( event.GetItem() );
+    if (artist == "Ludwig van Beethoven")
+    {
+        event.Veto();
+        
+        if (!m_log)
+           return;
+           
+        wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_START_EDITING vetoed, Item: %s", artist );
+    }
+}
+
 void MyFrame::OnEditingStarted( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 void MyFrame::OnEditingStarted( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED, Item: %s"), title.GetData() );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED, Item: %s", title );
 }
 
 void MyFrame::OnEditingDone( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnEditingDone( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE, Item: %s"), title.GetData() );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE, Item: %s", title );
 }
 
 void MyFrame::OnExpanded( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnExpanded( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED, Item: %s"), title.GetData() );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED, Item: %s", title );
 }
 
 void MyFrame::OnCollapsing( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnCollapsing( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-        
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING, Item: %s"), title.GetData() );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING, Item: %s", title );
 }
 
 void MyFrame::OnCollapsed( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnCollapsed( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-    
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED, Item: %s"),title.GetData());
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED, Item: %s", title );
 }
 
 void MyFrame::OnContextMenu( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
 }
 
 void MyFrame::OnContextMenu( wxDataViewEvent &event )
 {
     if (!m_log)
         return;
-    
+
     wxString title = m_music_model->GetTitle( event.GetItem() );
     wxString title = m_music_model->GetTitle( event.GetItem() );
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, Item: %s"),title.GetData());
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, Item: %s", title );
+
+    wxMenu menu;
+    menu.Append( 1, "menuitem 1" );
+    menu.Append( 2, "menuitem 2" );
+    menu.Append( 3, "menuitem 3" );
+
+    m_ctrl[0]->PopupMenu(&menu);
 }
 
 void MyFrame::OnHeaderClick( wxDataViewEvent &event )
 {
 }
 
 void MyFrame::OnHeaderClick( wxDataViewEvent &event )
 {
-    if(!m_log)
+    // we need to skip the event to let the default behaviour of sorting by
+    // this column when it is clicked to take place
+    event.Skip();
+
+    if (!m_log)
         return;
         return;
-        
-    int pos = m_musicCtrl->GetColumnPosition( event.GetDataViewColumn() );
 
 
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, Column position: %d"), pos );
+    int pos = m_ctrl[0]->GetColumnPosition( event.GetDataViewColumn() );
+
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, Column position: %d", pos );
+    wxLogMessage( "Column width: %d", event.GetDataViewColumn()->GetWidth() );
 }
 
 void MyFrame::OnHeaderRightClick( wxDataViewEvent &event )
 }
 
 void MyFrame::OnHeaderRightClick( wxDataViewEvent &event )
@@ -956,9 +939,9 @@ void MyFrame::OnHeaderRightClick( wxDataViewEvent &event )
     if(!m_log)
         return;
 
     if(!m_log)
         return;
 
-    int pos = m_musicCtrl->GetColumnPosition( event.GetDataViewColumn() );
+    int pos = m_ctrl[0]->GetColumnPosition( event.GetDataViewColumn() );
 
 
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK, Column position: %d"), pos );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK, Column position: %d", pos );
 }
 
 void MyFrame::OnSorted( wxDataViewEvent &event )
 }
 
 void MyFrame::OnSorted( wxDataViewEvent &event )
@@ -966,9 +949,9 @@ void MyFrame::OnSorted( wxDataViewEvent &event )
     if(!m_log)
         return;
 
     if(!m_log)
         return;
 
-    int pos = m_musicCtrl->GetColumnPosition( event.GetDataViewColumn() );
+    int pos = m_ctrl[0]->GetColumnPosition( event.GetDataViewColumn() );
 
 
-    wxLogMessage(wxT("wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, Column position: %d"), pos );
+    wxLogMessage( "wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, Column position: %d", pos );
 }
 
 void MyFrame::OnRightClick( wxMouseEvent &event )
 }
 
 void MyFrame::OnRightClick( wxMouseEvent &event )
@@ -976,28 +959,36 @@ void MyFrame::OnRightClick( wxMouseEvent &event )
     if(!m_log)
         return;
 
     if(!m_log)
         return;
 
-    wxLogMessage(wxT("wxEVT_MOUSE_RIGHT_UP, Click Point is X: %d, Y: %d"), event.GetX(), event.GetY());
+    wxLogMessage( "wxEVT_MOUSE_RIGHT_UP, Click Point is X: %d, Y: %d",
+                 event.GetX(), event.GetY() );
 }
 
 }
 
-void MyFrame::OnGoto(wxCommandEvent& WXUNUSED(event))
+
+// ----------------------------------------------------------------------------
+// MyFrame - event handlers for the second page
+// ----------------------------------------------------------------------------
+
+void MyFrame::OnPrependList( wxCommandEvent& WXUNUSED(event) )
 {
 {
-    wxDataViewItem item = m_list_model->GetItem( 50 );
-    m_listCtrl->EnsureVisible(item,m_col);
+    m_list_model->Prepend("Test");
 }
 
 }
 
-void MyFrame::OnAddMany(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnDeleteList( wxCommandEvent& WXUNUSED(event) )
 {
 {
-    m_list_model->AddMany();
+    wxDataViewItemArray items;
+    int len = m_ctrl[1]->GetSelections( items );
+    if (len > 0)
+        m_list_model->DeleteItems( items );
 }
 
 }
 
-
-void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
+void MyFrame::OnGoto(wxCommandEvent& WXUNUSED(event))
 {
 {
-    wxAboutDialogInfo info;
-    info.SetName(_("DataView sample"));
-    info.SetDescription(_("This sample demonstrates the dataview control handling"));
-    info.SetCopyright(_T("(C) 2007 Robert Roebling"));
+    wxDataViewItem item = m_list_model->GetItem( 50 );
+    m_ctrl[1]->EnsureVisible(item,m_col);
+}
 
 
-    wxAboutBox(info);
+void MyFrame::OnAddMany(wxCommandEvent& WXUNUSED(event))
+{
+    m_list_model->AddMany();
 }
 
 }
 
wxWidgets (Impactor)