added test for writing empty value to the config

[wxWidgets.git] / src / common / wincmn.cpp

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 26181e21b21c92728be9f5e1a50e669c9a113acd..4c5ebcc5da795b8db66265e7cf235bec621d371a 100644 (file)
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -35,11 +35,14 @@
     #include "wx/frame.h"
     #include "wx/defs.h"
     #include "wx/window.h"
     #include "wx/frame.h"
     #include "wx/defs.h"
     #include "wx/window.h"

+    #include "wx/control.h"

     #include "wx/checkbox.h"
     #include "wx/radiobut.h"
     #include "wx/textctrl.h"
     #include "wx/settings.h"
     #include "wx/dialog.h"
     #include "wx/checkbox.h"
     #include "wx/radiobut.h"
     #include "wx/textctrl.h"
     #include "wx/settings.h"
     #include "wx/dialog.h"

+    #include "wx/msgdlg.h"
+    #include "wx/statusbr.h"

 #endif //WX_PRECOMP
 
 #if wxUSE_CONSTRAINTS
 #endif //WX_PRECOMP
 
 #if wxUSE_CONSTRAINTS


@@ -51,6 +54,10 @@
     #include "wx/dnd.h"
 #endif // wxUSE_DRAG_AND_DROP
 
     #include "wx/dnd.h"
 #endif // wxUSE_DRAG_AND_DROP
 

+#if wxUSE_HELP
+    #include "wx/cshelp.h"
+#endif // wxUSE_HELP
+

 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
 #endif // wxUSE_TOOLTIPS
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
 #endif // wxUSE_TOOLTIPS


@@ -74,6 +81,12 @@ IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)

+    EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
+
+#if wxUSE_HELP
+    EVT_HELP(-1, wxWindowBase::OnHelp)
+#endif // wxUSE_HELP
+

 END_EVENT_TABLE()
 
 // ============================================================================
 END_EVENT_TABLE()
 
 // ============================================================================


@@ -104,7 +117,7 @@ void wxWindowBase::InitBase()
 
     // no client data (yet)
     m_clientData = NULL;
 
     // no client data (yet)
     m_clientData = NULL;

-    m_clientDataType = ClientData_None;
+    m_clientDataType = wxClientData_None;

 
     // the default event handler is just this window
     m_eventHandler = this;
 
     // the default event handler is just this window
     m_eventHandler = this;


@@ -115,13 +128,18 @@ void wxWindowBase::InitBase()
 #endif // wxUSE_VALIDATORS
 
     // use the system default colours
 #endif // wxUSE_VALIDATORS
 
     // use the system default colours

-    wxSystemSettings settings;
+    m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_BTNFACE);
+    m_foregroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT);

 
 

-    m_backgroundColour = settings.GetSystemColour(wxSYS_COLOUR_BTNFACE);
-    m_foregroundColour = *wxBLACK;  // TODO take this from sys settings too?
-    m_font = *wxSWISS_FONT;         //      and this?
+    // don't set the font here for wxMSW as we don't call WM_SETFONT here and
+    // so the font is *not* really set - but calls to SetFont() later won't do
+    // anything because m_font appears to be already set!
+#ifndef __WXMSW__
+    m_font = wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT);
+#endif // __WXMSW__

 
     // no style bits
 
     // no style bits

+    m_exStyle =

     m_windowStyle = 0;
 
     // an optimization for the event processing: checking this flag is much
     m_windowStyle = 0;
 
     // an optimization for the event processing: checking this flag is much


@@ -147,6 +165,9 @@ void wxWindowBase::InitBase()
 #if wxUSE_CARET
     m_caret = (wxCaret *)NULL;
 #endif // wxUSE_CARET
 #if wxUSE_CARET
     m_caret = (wxCaret *)NULL;
 #endif // wxUSE_CARET

+
+    // Whether we're using the current theme for this window (wxGTK only for now)
+    m_themeEnabled = FALSE;

 }
 
 // common part of window creation process
 }
 
 // common part of window creation process


@@ -155,13 +176,7 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
                               const wxPoint& WXUNUSED(pos),
                               const wxSize& WXUNUSED(size),
                               long style,
                               const wxPoint& WXUNUSED(pos),
                               const wxSize& WXUNUSED(size),
                               long style,

-#if wxUSE_VALIDATORS
-#  if defined(__VISAGECPP__)
-                              const wxValidator* validator,
-#  else

                               const wxValidator& validator,
                               const wxValidator& validator,

-#  endif
-#endif

                               const wxString& name)
 {
     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
                               const wxString& name)
 {
     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other


@@ -175,7 +190,18 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
     SetName(name);
     SetWindowStyleFlag(style);
     SetParent(parent);
     SetName(name);
     SetWindowStyleFlag(style);
     SetParent(parent);

+
+#if wxUSE_VALIDATORS

     SetValidator(validator);
     SetValidator(validator);

+#endif // wxUSE_VALIDATORS
+
+    // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
+    // have it too - like this it's possible to set it only in the top level
+    // dialog/frame and all children will inherit it by defult
+    if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
+    {
+        SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
+    }

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -200,16 +226,6 @@ wxWindowBase::~wxWindowBase()
 
     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 
 
     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 

-    // make sure that there are no dangling pointers left pointing to us
-    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
-    if ( panel )
-    {
-        if ( panel->GetLastFocus() == this )
-        {
-            panel->SetLastFocus((wxWindow *)NULL);
-        }
-    }
-

 #if wxUSE_CARET
     if ( m_caret )
         delete m_caret;
 #if wxUSE_CARET
     if ( m_caret )
         delete m_caret;


@@ -221,7 +237,7 @@ wxWindowBase::~wxWindowBase()
 #endif // wxUSE_VALIDATORS
 
     // we only delete object data, not untyped
 #endif // wxUSE_VALIDATORS
 
     // we only delete object data, not untyped

-    if ( m_clientDataType == ClientData_Object )
+    if ( m_clientDataType == wxClientData_Object )

         delete m_clientObject;
 
 #if wxUSE_CONSTRAINTS
         delete m_clientObject;
 
 #if wxUSE_CONSTRAINTS


@@ -289,6 +305,7 @@ bool wxWindowBase::DestroyChildren()
 
         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 
 
         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 

+        child->Show(FALSE);

         delete child;
 
         wxASSERT_MSG( !GetChildren().Find(child),
         delete child;
 
         wxASSERT_MSG( !GetChildren().Find(child),


@@ -299,19 +316,38 @@ bool wxWindowBase::DestroyChildren()
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// centre/fit the window
+// size/position related methods

 // ----------------------------------------------------------------------------
 
 // centre the window with respect to its parent in either (or both) directions
 void wxWindowBase::Centre(int direction)
 {
 // ----------------------------------------------------------------------------
 
 // centre the window with respect to its parent in either (or both) directions
 void wxWindowBase::Centre(int direction)
 {

+    // the position/size of the parent window or of the entire screen
+    wxPoint posParent;

     int widthParent, heightParent;
 
     int widthParent, heightParent;
 

-    wxWindow *parent = GetParent();
-    if ( !parent )
+    wxWindow *parent = NULL;
+
+    if ( !(direction & wxCENTRE_ON_SCREEN) )

     {
     {

-        // no other choice
-        direction |= wxCENTRE_ON_SCREEN;
+        // find the parent to centre this window on: it should be the
+        // immediate parent for the controls but the top level parent for the
+        // top level windows (like dialogs)
+        parent = GetParent();
+        if ( IsTopLevel() )
+        {
+            while ( parent && !parent->IsTopLevel() )
+            {
+                parent = parent->GetParent();
+            }
+        }
+
+        // did we find the parent?
+        if ( !parent )
+        {
+            // no other choice
+            direction |= wxCENTRE_ON_SCREEN;
+        }

     }
 
     if ( direction & wxCENTRE_ON_SCREEN )
     }
 
     if ( direction & wxCENTRE_ON_SCREEN )


@@ -321,8 +357,19 @@ void wxWindowBase::Centre(int direction)
     }
     else
     {
     }
     else
     {

-        // centre inside the parents rectangle
-        parent->GetClientSize(&widthParent, &heightParent);
+        if ( IsTopLevel() )
+        {
+            // centre on the parent
+            parent->GetSize(&widthParent, &heightParent);
+
+            // adjust to the parents position
+            posParent = parent->GetPosition();
+        }
+        else
+        {
+            // centre inside the parents client rectangle
+            parent->GetClientSize(&widthParent, &heightParent);
+        }

     }
 
     int width, height;
     }
 
     int width, height;


@@ -337,56 +384,115 @@ void wxWindowBase::Centre(int direction)
     if ( direction & wxVERTICAL )
         yNew = (heightParent - height)/2;
 
     if ( direction & wxVERTICAL )
         yNew = (heightParent - height)/2;
 

-    // controls are always centered on their parent because it doesn't make
-    // sense to centre them on the screen
-    if ( !(direction & wxCENTRE_ON_SCREEN) || wxDynamicCast(this, wxControl) )
-    {
-        // theo nly chance to get this is to have a wxControl without parent
-        wxCHECK_RET( parent, wxT("a control must have a parent") );
+    xNew += posParent.x;
+    yNew += posParent.y;

 
 

-        // adjust to the parents client area origin
-        wxPoint posParent = parent->ClientToScreen(wxPoint(0, 0));
+    // Base size of the visible dimensions of the display
+    // to take into account the taskbar
+    wxRect rect = wxGetClientDisplayRect();
+    wxSize size (rect.width,rect.height);

 
 

-        xNew += posParent.x;
-        yNew += posParent.y;
+    if (posParent.x >= 0)  // if parent is on the main display
+    {
+        if (xNew < 0)
+            xNew = 0;
+        else if (xNew+width > size.x)
+            xNew = size.x-width-1;
+    }
+    if (posParent.y >= 0)  // if parent is on the main display
+    {
+        if (yNew+height > size.y)
+            yNew = size.y-height-1;
+
+        // Make certain that the title bar is initially visible
+        // always, even if this would push the bottom of the
+        // dialog of the visible area of the display
+        if (yNew < 0)
+            yNew = 0;

     }
 
     }
 

-    Move(xNew, yNew);
+    // move the window to this position (keeping the old size but using
+    // SetSize() and not Move() to allow xNew and/or yNew to be -1)
+    SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);

 }
 
 // fits the window around the children
 void wxWindowBase::Fit()
 {
 }
 
 // fits the window around the children
 void wxWindowBase::Fit()
 {

-    int maxX = 0,
-        maxY = 0;
+    if ( GetChildren().GetCount() > 0 )
+    {
+        wxSize size = DoGetBestSize();
+
+        // for compatibility with the old versions and because it really looks
+        // slightly more pretty like this, add a pad
+        size.x += 7;
+        size.y += 14;

 
 

-    for ( wxWindowList::Node *node = GetChildren().GetFirst();
-          node;
-          node = node->GetNext() )
+        SetClientSize(size);
+    }
+    //else: do nothing if we have no children
+}
+
+// return the size best suited for the current window
+wxSize wxWindowBase::DoGetBestSize() const
+{
+    if ( GetChildren().GetCount() > 0 )

     {
     {

-        wxWindow *win = node->GetData();
-        if ( win->IsTopLevel() )
+        // our minimal acceptable size is such that all our windows fit inside
+        int maxX = 0,
+            maxY = 0;
+
+        for ( wxWindowList::Node *node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )

         {
         {

-            // dialogs and frames lie in different top level windows - don't
-            // deal with them here
-            continue;
+            wxWindow *win = node->GetData();
+            if ( win->IsTopLevel()
+#if wxUSE_STATUSBAR
+                    || wxDynamicCast(win, wxStatusBar)
+#endif // wxUSE_STATUSBAR
+               )
+            {
+                // dialogs and frames lie in different top level windows -
+                // don't deal with them here; as for the status bars, they
+                // don't lie in the client area at all
+                continue;
+            }
+
+            int wx, wy, ww, wh;
+            win->GetPosition(&wx, &wy);
+
+            // if the window hadn't been positioned yet, assume that it is in
+            // the origin
+            if ( wx == -1 )
+                wx = 0;
+            if ( wy == -1 )
+                wy = 0;
+
+            win->GetSize(&ww, &wh);
+            if ( wx + ww > maxX )
+                maxX = wx + ww;
+            if ( wy + wh > maxY )
+                maxY = wy + wh;

         }
 
         }
 

-        int wx, wy, ww, wh;
-        win->GetPosition(&wx, &wy);
-        win->GetSize(&ww, &wh);
-        if ( wx + ww > maxX )
-            maxX = wx + ww;
-        if ( wy + wh > maxY )
-            maxY = wy + wh;
+        return wxSize(maxX, maxY);

     }
     }

+    else
+    {
+        // for a generic window there is no natural best size - just use the
+        // current one
+        return GetSize();
+    }
+}

 
 

-    // leave a margin
-    SetClientSize(maxX + 7, maxY + 14);
+// by default the origin is not shifted
+wxPoint wxWindowBase::GetClientAreaOrigin() const
+{
+    return wxPoint(0, 0);

 }
 
 // set the min/max size of the window
 }
 
 // set the min/max size of the window

-

 void wxWindowBase::SetSizeHints(int minW, int minH,
                                 int maxW, int maxH,
                                 int WXUNUSED(incW), int WXUNUSED(incH))
 void wxWindowBase::SetSizeHints(int minW, int minH,
                                 int maxW, int maxH,
                                 int WXUNUSED(incW), int WXUNUSED(incH))


@@ -445,6 +551,11 @@ void wxWindowBase::AddChild(wxWindowBase *child)
 {
     wxCHECK_RET( child, wxT("can't add a NULL child") );
 
 {
     wxCHECK_RET( child, wxT("can't add a NULL child") );
 

+    // this should never happen and it will lead to a crash later if it does
+    // because RemoveChild() will remove only one node from the children list
+    // and the other(s) one(s) will be left with dangling pointers in them
+    wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
+

     GetChildren().Append(child);
     child->SetParent(this);
 }
     GetChildren().Append(child);
     child->SetParent(this);
 }


@@ -543,16 +654,15 @@ bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 
 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 {
 
 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 {

-    // don't try to set invalid cursor, always fall back to the default
-    const wxCursor& cursorOk = cursor.Ok() ? cursor : *wxSTANDARD_CURSOR;
-
-    if ( (wxCursor&)cursorOk == m_cursor )
+    // setting an invalid cursor is ok, it means that we don't have any special
+    // cursor
+    if ( m_cursor == cursor )

     {
         // no change
         return FALSE;
     }
 
     {
         // no change
         return FALSE;
     }
 

-    m_cursor = cursorOk;
+    m_cursor = cursor;

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -562,7 +672,7 @@ bool wxWindowBase::SetFont(const wxFont& font)
     // don't try to set invalid font, always fall back to the default
     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 
     // don't try to set invalid font, always fall back to the default
     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 

-    if ( (wxFont&)fontOk == m_font )
+    if ( fontOk == m_font )

     {
         // no change
         return FALSE;
     {
         // no change
         return FALSE;


@@ -596,18 +706,6 @@ void wxWindowBase::SetCaret(wxCaret *caret)
 // validators
 // ----------------------------------------------------------------------------
 
 // validators
 // ----------------------------------------------------------------------------
 

-#  if defined(__VISAGECPP__)
-void wxWindowBase::SetValidator(const wxValidator* validator)
-{
-    if ( m_windowValidator )
-        delete m_windowValidator;
-
-    m_windowValidator = (wxValidator *)validator->Clone();
-
-    if ( m_windowValidator )
-        m_windowValidator->SetWindow(this) ;
-}
-#  else

 void wxWindowBase::SetValidator(const wxValidator& validator)
 {
     if ( m_windowValidator )
 void wxWindowBase::SetValidator(const wxValidator& validator)
 {
     if ( m_windowValidator )


@@ -618,13 +716,24 @@ void wxWindowBase::SetValidator(const wxValidator& validator)
     if ( m_windowValidator )
         m_windowValidator->SetWindow(this) ;
 }
     if ( m_windowValidator )
         m_windowValidator->SetWindow(this) ;
 }

-#  endif // __VISAGECPP__

 #endif // wxUSE_VALIDATORS
 
 // ----------------------------------------------------------------------------
 #endif // wxUSE_VALIDATORS
 
 // ----------------------------------------------------------------------------

-// update region testing
+// update region stuff

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

+wxRect wxWindowBase::GetUpdateClientRect() const
+{
+    wxRegion rgnUpdate = GetUpdateRegion();
+    rgnUpdate.Intersect(GetClientRect());
+    wxRect rectUpdate = rgnUpdate.GetBox();
+    wxPoint ptOrigin = GetClientAreaOrigin();
+    rectUpdate.x -= ptOrigin.x;
+    rectUpdate.y -= ptOrigin.y;
+
+    return rectUpdate;
+}
+

 bool wxWindowBase::IsExposed(int x, int y) const
 {
     return m_updateRegion.Contains(x, y) != wxOutRegion;
 bool wxWindowBase::IsExposed(int x, int y) const
 {
     return m_updateRegion.Contains(x, y) != wxOutRegion;


@@ -695,6 +804,8 @@ void wxWindowBase::MakeModal(bool modal)
 bool wxWindowBase::Validate()
 {
 #if wxUSE_VALIDATORS
 bool wxWindowBase::Validate()
 {
 #if wxUSE_VALIDATORS

+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+

     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {
     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {


@@ -704,6 +815,11 @@ bool wxWindowBase::Validate()
         {
             return FALSE;
         }
         {
             return FALSE;
         }

+
+        if ( recurse && !child->Validate() )
+        {
+            return FALSE;
+        }

     }
 #endif // wxUSE_VALIDATORS
 
     }
 #endif // wxUSE_VALIDATORS
 


@@ -713,6 +829,8 @@ bool wxWindowBase::Validate()
 bool wxWindowBase::TransferDataToWindow()
 {
 #if wxUSE_VALIDATORS
 bool wxWindowBase::TransferDataToWindow()
 {
 #if wxUSE_VALIDATORS

+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+

     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {
     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {


@@ -720,15 +838,20 @@ bool wxWindowBase::TransferDataToWindow()
         wxValidator *validator = child->GetValidator();
         if ( validator && !validator->TransferToWindow() )
         {
         wxValidator *validator = child->GetValidator();
         if ( validator && !validator->TransferToWindow() )
         {

-            wxLog *log = wxLog::GetActiveTarget();
-            if ( log )
-            {
-                wxLogWarning(_("Could not transfer data to window"));
-                log->Flush();
-            }
+            wxLogWarning(_("Could not transfer data to window"));
+            wxLog::FlushActive();

 
             return FALSE;
         }
 
             return FALSE;
         }

+
+        if ( recurse )
+        {
+            if ( !child->TransferDataToWindow() )
+            {
+                // warning already given
+                return FALSE;
+            }
+        }

     }
 #endif // wxUSE_VALIDATORS
 
     }
 #endif // wxUSE_VALIDATORS
 


@@ -738,15 +861,29 @@ bool wxWindowBase::TransferDataToWindow()
 bool wxWindowBase::TransferDataFromWindow()
 {
 #if wxUSE_VALIDATORS
 bool wxWindowBase::TransferDataFromWindow()
 {
 #if wxUSE_VALIDATORS

+    bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
+

     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {
         wxWindow *child = node->GetData();
     wxWindowList::Node *node;
     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
     {
         wxWindow *child = node->GetData();

-        if ( child->GetValidator() &&
-             !child->GetValidator()->TransferFromWindow() )
+        wxValidator *validator = child->GetValidator();
+        if ( validator && !validator->TransferFromWindow() )

         {
         {

+            // nop warning here because the application is supposed to give
+            // one itself - we don't know here what might have gone wrongly
+

             return FALSE;
         }
             return FALSE;
         }

+
+        if ( recurse )
+        {
+            if ( !child->TransferDataFromWindow() )
+            {
+                // warning already given
+                return FALSE;
+            }
+        }

     }
 #endif // wxUSE_VALIDATORS
 
     }
 #endif // wxUSE_VALIDATORS
 


@@ -760,6 +897,64 @@ void wxWindowBase::InitDialog()
     GetEventHandler()->ProcessEvent(event);
 }
 
     GetEventHandler()->ProcessEvent(event);
 }
 

+// ----------------------------------------------------------------------------
+// context-sensitive help support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_HELP
+
+// associate this help text with this window
+void wxWindowBase::SetHelpText(const wxString& text)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        helpProvider->AddHelp(this, text);
+    }
+}
+
+// associate this help text with all windows with the same id as this
+// one
+void wxWindowBase::SetHelpTextForId(const wxString& text)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        helpProvider->AddHelp(GetId(), text);
+    }
+}
+
+// get the help string associated with this window (may be empty)
+wxString wxWindowBase::GetHelpText() const
+{
+    wxString text;
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        text = helpProvider->GetHelp(this);
+    }
+
+    return text;
+}
+
+// show help for this window
+void wxWindowBase::OnHelp(wxHelpEvent& event)
+{
+    wxHelpProvider *helpProvider = wxHelpProvider::Get();
+    if ( helpProvider )
+    {
+        if ( helpProvider->ShowHelp(this) )
+        {
+            // skip the event.Skip() below
+            return;
+        }
+    }
+
+    event.Skip();
+}
+
+#endif // wxUSE_HELP
+

 // ----------------------------------------------------------------------------
 // tooltips
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // tooltips
 // ----------------------------------------------------------------------------


@@ -913,27 +1108,37 @@ void wxWindowBase::SetSizer(wxSizer *sizer)
 
 bool wxWindowBase::Layout()
 {
 
 bool wxWindowBase::Layout()
 {

-    int w, h;
-    GetClientSize(&w, &h);
-

     // If there is a sizer, use it instead of the constraints
     if ( GetSizer() )
     {
     // If there is a sizer, use it instead of the constraints
     if ( GetSizer() )
     {

+        int w, h;
+        GetClientSize(&w, &h);
+

         GetSizer()->SetDimension( 0, 0, w, h );
         GetSizer()->SetDimension( 0, 0, w, h );

-        return TRUE;

     }
     }

-
-    if ( GetConstraints() )
+    else

     {
     {

-        GetConstraints()->width.SetValue(w);
-        GetConstraints()->height.SetValue(h);
+        wxLayoutConstraints *constr = GetConstraints();
+        bool wasOk = constr && constr->AreSatisfied();
+
+        ResetConstraints();   // Mark all constraints as unevaluated
+
+        // if we're a top level panel (i.e. our parent is frame/dialog), our
+        // own constraints will never be satisfied any more unless we do it
+        // here
+        if ( wasOk )
+        {
+            int noChanges = 1;
+            while ( noChanges > 0 )
+            {
+                constr->SatisfyConstraints(this, &noChanges);
+            }
+        }
+
+        DoPhase(1);           // Layout children
+        DoPhase(2);           // Layout grand children
+        SetConstraintSizes(); // Recursively set the real window sizes

     }
     }

-       
-    // Evaluate child constraints
-    ResetConstraints();   // Mark all constraints as unevaluated
-    DoPhase(1);           // Just one phase need if no sizers involved
-    DoPhase(2);
-    SetConstraintSizes(); // Recursively set the real window sizes

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -1019,6 +1224,7 @@ void wxWindowBase::ResetConstraints()
         constr->centreX.SetDone(FALSE);
         constr->centreY.SetDone(FALSE);
     }
         constr->centreX.SetDone(FALSE);
         constr->centreY.SetDone(FALSE);
     }

+

     wxWindowList::Node *node = GetChildren().GetFirst();
     while (node)
     {
     wxWindowList::Node *node = GetChildren().GetFirst();
     while (node)
     {


@@ -1034,8 +1240,7 @@ void wxWindowBase::ResetConstraints()
 void wxWindowBase::SetConstraintSizes(bool recurse)
 {
     wxLayoutConstraints *constr = GetConstraints();
 void wxWindowBase::SetConstraintSizes(bool recurse)
 {
     wxLayoutConstraints *constr = GetConstraints();

-    if ( constr && constr->left.GetDone() && constr->right.GetDone( ) &&
-            constr->width.GetDone() && constr->height.GetDone())
+    if ( constr && constr->AreSatisfied() )

     {
         int x = constr->left.GetValue();
         int y = constr->top.GetValue();
     {
         int x = constr->left.GetValue();
         int y = constr->top.GetValue();


@@ -1055,21 +1260,9 @@ void wxWindowBase::SetConstraintSizes(bool recurse)
     }
     else if ( constr )
     {
     }
     else if ( constr )
     {

-        wxChar *windowClass = GetClassInfo()->GetClassName();
-
-        wxString winName;
-        if ( GetName() == wxT("") )
-            winName = wxT("unnamed");
-        else
-            winName = GetName();
-        wxLogDebug( wxT("Constraint(s) not satisfied for window of type %s, name %s:\n"),
-                (const wxChar *)windowClass,
-                (const wxChar *)winName);
-        if ( !constr->left.GetDone()) wxLogDebug( wxT("  unsatisfied 'left' constraint.\n")  );
-        if ( !constr->right.GetDone()) wxLogDebug( wxT("  unsatisfied 'right' constraint.\n")  );
-        if ( !constr->width.GetDone()) wxLogDebug( wxT("  unsatisfied 'width' constraint.\n")  );
-        if ( !constr->height.GetDone())  wxLogDebug( wxT("  unsatisfied 'height' constraint.\n")  );
-        wxLogDebug( wxT("Please check constraints: try adding AsIs() constraints.\n") );
+        wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
+                   GetClassInfo()->GetClassName(),
+                   GetName().c_str());

     }
 
     if ( recurse )
     }
 
     if ( recurse )


@@ -1180,6 +1373,7 @@ void wxWindowBase::GetPositionConstraint(int *x, int *y) const
 // of control classes.
 void wxWindowBase::UpdateWindowUI()
 {
 // of control classes.
 void wxWindowBase::UpdateWindowUI()
 {

+#if wxUSE_CONTROLS

     wxUpdateUIEvent event(GetId());
     event.m_eventObject = this;
 
     wxUpdateUIEvent event(GetId());
     event.m_eventObject = this;
 


@@ -1190,19 +1384,21 @@ void wxWindowBase::UpdateWindowUI()
 
         if ( event.GetSetText() )
         {
 
         if ( event.GetSetText() )
         {

-            wxControl *control = wxDynamicCast(this, wxControl);
+            wxControl *control = wxDynamicCastThis(wxControl);

             if ( control )
             {
             if ( control )
             {

+#if wxUSE_TEXTCTRL

                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
                 if ( text )
                     text->SetValue(event.GetText());
                 else
                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
                 if ( text )
                     text->SetValue(event.GetText());
                 else

+#endif // wxUSE_TEXTCTRL

                     control->SetLabel(event.GetText());
             }
         }
 
 #if wxUSE_CHECKBOX
                     control->SetLabel(event.GetText());
             }
         }
 
 #if wxUSE_CHECKBOX

-        wxCheckBox *checkbox = wxDynamicCast(this, wxCheckBox);
+        wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);

         if ( checkbox )
         {
             if ( event.GetSetChecked() )
         if ( checkbox )
         {
             if ( event.GetSetChecked() )


@@ -1210,15 +1406,16 @@ void wxWindowBase::UpdateWindowUI()
         }
 #endif // wxUSE_CHECKBOX
 
         }
 #endif // wxUSE_CHECKBOX
 

-#if wxUSE_RADIOBUTTON
-        wxRadioButton *radiobtn = wxDynamicCast(this, wxRadioButton);
+#if wxUSE_RADIOBTN
+        wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);

         if ( radiobtn )
         {
             if ( event.GetSetChecked() )
                 radiobtn->SetValue(event.GetChecked());
         }
         if ( radiobtn )
         {
             if ( event.GetSetChecked() )
                 radiobtn->SetValue(event.GetChecked());
         }

-#endif // wxUSE_RADIOBUTTON
+#endif // wxUSE_RADIOBTN

     }
     }

+#endif // wxUSE_CONTROLS

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -1257,19 +1454,21 @@ wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
 
 void wxWindowBase::DoSetClientObject( wxClientData *data )
 {
 
 void wxWindowBase::DoSetClientObject( wxClientData *data )
 {

-    wxASSERT_MSG( m_clientDataType != ClientData_Void,
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,

                   wxT("can't have both object and void client data") );
 
     if ( m_clientObject )
         delete m_clientObject;
 
     m_clientObject = data;
                   wxT("can't have both object and void client data") );
 
     if ( m_clientObject )
         delete m_clientObject;
 
     m_clientObject = data;

-    m_clientDataType = ClientData_Object;
+    m_clientDataType = wxClientData_Object;

 }
 
 wxClientData *wxWindowBase::DoGetClientObject() const
 {
 }
 
 wxClientData *wxWindowBase::DoGetClientObject() const
 {

-    wxASSERT_MSG( m_clientDataType == ClientData_Object,
+    // it's not an error to call GetClientObject() on a window which doesn't
+    // have client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,

                   wxT("this window doesn't have object client data") );
 
     return m_clientObject;
                   wxT("this window doesn't have object client data") );
 
     return m_clientObject;


@@ -1277,16 +1476,18 @@ wxClientData *wxWindowBase::DoGetClientObject() const
 
 void wxWindowBase::DoSetClientData( void *data )
 {
 
 void wxWindowBase::DoSetClientData( void *data )
 {

-    wxASSERT_MSG( m_clientDataType != ClientData_Object,
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,

                   wxT("can't have both object and void client data") );
 
     m_clientData = data;
                   wxT("can't have both object and void client data") );
 
     m_clientData = data;

-    m_clientDataType = ClientData_Void;
+    m_clientDataType = wxClientData_Void;

 }
 
 void *wxWindowBase::DoGetClientData() const
 {
 }
 
 void *wxWindowBase::DoGetClientData() const
 {

-    wxASSERT_MSG( m_clientDataType == ClientData_Void,
+    // it's not an error to call GetClientData() on a window which doesn't have
+    // client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,

                   wxT("this window doesn't have void client data") );
 
     return m_clientData;
                   wxT("this window doesn't have void client data") );
 
     return m_clientData;


@@ -1321,6 +1522,60 @@ void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
     TransferDataToWindow();
 }
 
     TransferDataToWindow();
 }
 

+// process Ctrl-Alt-mclick
+void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
+{
+#if wxUSE_MSGDLG
+    if ( event.ControlDown() && event.AltDown() )
+    {
+        // don't translate these strings
+        wxString port;
+        switch ( wxGetOsVersion() )
+        {
+            case wxMOTIF_X:     port = _T("Motif"); break;
+            case wxMACINTOSH:   port = _T("Mac"); break;
+            case wxBEOS:        port = _T("BeOS"); break;
+            case wxGTK:
+            case wxGTK_WIN32:
+            case wxGTK_OS2:
+            case wxGTK_BEOS:    port = _T("GTK"); break;
+            case wxWINDOWS:
+            case wxPENWINDOWS:
+            case wxWINDOWS_NT:
+            case wxWIN32S:
+            case wxWIN95:
+            case wxWIN386:      port = _T("MS Windows"); break;
+            case wxMGL_UNIX:
+            case wxMGL_X:
+            case wxMGL_WIN32:
+            case wxMGL_OS2:     port = _T("MGL"); break;
+            case wxWINDOWS_OS2:
+            case wxOS2_PM:      port = _T("OS/2"); break;
+            default:            port = _T("unknown"); break;
+        }
+
+        wxMessageBox(wxString::Format(
+                                      _T(
+                                        "       wxWindows Library (%s port)\nVersion %u.%u.%u, compiled at %s %s\n   Copyright (c) 1995-2000 wxWindows team"
+                                        ),
+                                      port.c_str(),
+                                      wxMAJOR_VERSION,
+                                      wxMINOR_VERSION,
+                                      wxRELEASE_NUMBER,
+                                      __DATE__,
+                                      __TIME__
+                                     ),
+                     _T("wxWindows information"),
+                     wxICON_INFORMATION | wxOK,
+                     (wxWindow *)this);
+    }
+    else
+#endif // wxUSE_MSGDLG
+    {
+        event.Skip();
+    }
+}
+

 // ----------------------------------------------------------------------------
 // list classes implementation
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // list classes implementation
 // ----------------------------------------------------------------------------


@@ -1330,3 +1585,43 @@ void wxWindowListNode::DeleteData()
     delete (wxWindow *)GetData();
 }
 
     delete (wxWindow *)GetData();
 }
 

+// ----------------------------------------------------------------------------
+// borders
+// ----------------------------------------------------------------------------
+
+wxBorder wxWindowBase::GetBorder() const
+{
+    wxBorder border = (wxBorder)(m_windowStyle & wxBORDER_MASK);
+    if ( border == wxBORDER_DEFAULT )
+    {
+        border = GetDefaultBorder();
+    }
+
+    return border;
+}
+
+wxBorder wxWindowBase::GetDefaultBorder() const
+{
+    return wxBORDER_NONE;
+}
+
+// ----------------------------------------------------------------------------
+// hit testing
+// ----------------------------------------------------------------------------
+
+wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
+{
+    // here we just check if the point is inside the window or not
+
+    // check the top and left border first
+    bool outside = x < 0 || y < 0;
+    if ( !outside )
+    {
+        // check the right and bottom borders too
+        wxSize size = GetSize();
+        outside = x >= size.x || y >= size.y;
+    }
+
+    return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
+}
+