made wxList methods return compatibility_iterator instead of Node * to further reduce...

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

diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 26c63a13f5e14b8b6467d134ac3ffbde1ebb551b..a18e65850abf7c071be7387ad19e2c0b550610cb 100644 (file)
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        common/window.cpp
+// Name:        src/common/window.cpp

 // Purpose:     common (to all ports) wxWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Modified by:
 // Purpose:     common (to all ports) wxWindow functions
 // Author:      Julian Smart, Vadim Zeitlin
 // Modified by:


@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "windowbase.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -44,6 +40,7 @@
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"
     #include "wx/statusbr.h"
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"
     #include "wx/statusbr.h"

+    #include "wx/toolbar.h"

     #include "wx/dcclient.h"
 #endif //WX_PRECOMP
 
     #include "wx/dcclient.h"
 #endif //WX_PRECOMP
 


@@ -77,11 +74,30 @@
     #include "wx/caret.h"
 #endif // wxUSE_CARET
 
     #include "wx/caret.h"
 #endif // wxUSE_CARET
 

+#if wxUSE_SYSTEM_OPTIONS
+    #include "wx/sysopt.h"
+#endif
+
+// For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
+// The gtk includes don't pull any other headers in, at least not on my system - MR
+#ifdef __WXGTK__
+    #ifdef __WXGTK20__
+        #include <gtk/gtkversion.h>
+    #else
+        #include <gtk/gtkfeatures.h>
+    #endif
+    extern const unsigned int gtk_major_version;
+    extern const unsigned int gtk_minor_version;
+    extern const unsigned int gtk_micro_version;
+#endif
+

 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------
 

-#if defined(__WXPM__)
+#if defined(__WXPALMOS__)
+int wxWindowBase::ms_lastControlId = 32767;
+#elif defined(__WXPM__)

 int wxWindowBase::ms_lastControlId = 2000;
 #else
 int wxWindowBase::ms_lastControlId = -200;
 int wxWindowBase::ms_lastControlId = 2000;
 #else
 int wxWindowBase::ms_lastControlId = -200;


@@ -121,9 +137,12 @@ wxWindowBase::wxWindowBase()
 
     // no constraints on the minimal window size
     m_minWidth =
 
     // no constraints on the minimal window size
     m_minWidth =

-    m_maxWidth = wxDefaultSize.x;
+    m_maxWidth = wxDefaultCoord;

     m_minHeight =
     m_minHeight =

-    m_maxHeight = wxDefaultSize.y;
+    m_maxHeight = wxDefaultCoord;
+
+    // invalidiated cache value
+    m_bestSizeCache = wxDefaultSize;

 
     // window are created enabled and visible by default
     m_isShown =
 
     // window are created enabled and visible by default
     m_isShown =


@@ -142,11 +161,16 @@ wxWindowBase::wxWindowBase()
     m_hasBgCol =
     m_hasFgCol =
     m_hasFont = false;
     m_hasBgCol =
     m_hasFgCol =
     m_hasFont = false;

+    m_inheritBgCol =
+    m_inheritFgCol =
+    m_inheritFont = false;

 
     // no style bits
     m_exStyle =
     m_windowStyle = 0;
 
 
     // no style bits
     m_exStyle =
     m_windowStyle = 0;
 

+    m_backgroundStyle = wxBG_STYLE_SYSTEM;
+

 #if wxUSE_CONSTRAINTS
     // no constraints whatsoever
     m_constraints = (wxLayoutConstraints *) NULL;
 #if wxUSE_CONSTRAINTS
     // no constraints whatsoever
     m_constraints = (wxLayoutConstraints *) NULL;


@@ -180,11 +204,17 @@ wxWindowBase::wxWindowBase()
     m_virtualSize = wxDefaultSize;
 
     m_minVirtualWidth =
     m_virtualSize = wxDefaultSize;
 
     m_minVirtualWidth =

-    m_maxVirtualWidth = wxDefaultSize.x;
+    m_maxVirtualWidth = wxDefaultCoord;

     m_minVirtualHeight =
     m_minVirtualHeight =

-    m_maxVirtualHeight = wxDefaultSize.y;
+    m_maxVirtualHeight = wxDefaultCoord;

 
     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 
     m_windowVariant = wxWINDOW_VARIANT_NORMAL;

+#if wxUSE_SYSTEM_OPTIONS
+    if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
+    {
+       m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
+    }
+#endif

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


@@ -363,126 +393,20 @@ bool wxWindowBase::DestroyChildren()
 // ----------------------------------------------------------------------------
 
 // centre the window with respect to its parent in either (or both) directions
 // ----------------------------------------------------------------------------
 
 // centre the window with respect to its parent in either (or both) directions

-void wxWindowBase::Centre(int direction)
+void wxWindowBase::DoCentre(int dir)

 {
 {

-    // the position/size of the parent window or of the entire screen
-    wxPoint posParent;
-    int widthParent, heightParent;
-
-    wxWindow *parent = NULL;
-
-    if ( !(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();
-            }
-        }
-
-        // there is no wxTopLevelWindow under wxMotif yet
-#ifndef __WXMOTIF__
-        // we shouldn't center the dialog on the iconized window: under
-        // Windows, for example, this places it completely off the screen
-        if ( parent )
-        {
-            wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
-            if ( winTop && winTop->IsIconized() )
-            {
-                parent = NULL;
-            }
-        }
-#endif // __WXMOTIF__
-
-        // did we find the parent?
-        if ( !parent )
-        {
-            // no other choice
-            direction |= wxCENTRE_ON_SCREEN;
-        }
-    }
-
-    if ( direction & wxCENTRE_ON_SCREEN )
-    {
-        // centre with respect to the whole screen
-        wxDisplaySize(&widthParent, &heightParent);
-    }
-    else
-    {
-        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;
-    GetSize(&width, &height);
-
-    int xNew = wxDefaultPosition.x,
-        yNew = wxDefaultPosition.y;
+    wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
+                 _T("this method only implements centering child windows") );

 
 

-    if ( direction & wxHORIZONTAL )
-        xNew = (widthParent - width)/2;
-
-    if ( direction & wxVERTICAL )
-        yNew = (heightParent - height)/2;
-
-    xNew += posParent.x;
-    yNew += posParent.y;
-
-    // Base size of the visible dimensions of the display
-    // to take into account the taskbar
-    wxRect rect = wxGetClientDisplayRect();
-    wxSize size (rect.width,rect.height);
-
-    // NB: in wxMSW, negative position may not neccessary mean "out of screen",
-    //     but it may mean that the window is placed on other than the main
-    //     display. Therefore we only make sure centered window is on the main display
-    //     if the parent is at least partially present here.
-    if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
-    {
-        if (xNew < 0)
-            xNew = 0;
-        else if (xNew+width > size.x)
-            xNew = size.x-width-1;
-    }
-    if (posParent.y + heightParent >= 0)  // if parent is (partially) 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 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);
+    SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));

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

-    if ( GetChildren().GetCount() > 0 )
+    if ( !GetChildren().empty() )

     {
     {

-        SetClientSize(DoGetBestSize());
+        SetClientSize(GetBestSize());

     }
     //else: do nothing if we have no children
 }
     }
     //else: do nothing if we have no children
 }


@@ -501,7 +425,7 @@ void wxWindowBase::FitInside()
 static bool wxHasRealChildren(const wxWindowBase* win)
 {
     int realChildCount = 0;
 static bool wxHasRealChildren(const wxWindowBase* win)
 {
     int realChildCount = 0;

-    
+

     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
           node;
           node = node->GetNext() )
     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
           node;
           node = node->GetNext() )


@@ -514,12 +438,26 @@ static bool wxHasRealChildren(const wxWindowBase* win)
 }
 #endif
 
 }
 #endif
 

+void wxWindowBase::InvalidateBestSize()
+{
+    m_bestSizeCache = wxDefaultSize;
+
+    // parent's best size calculation may depend on its children's
+    // as long as child window we are in is not top level window itself
+    // (because the TLW size is never resized automatically)
+    // so let's invalidate it as well to be safe:
+    if (m_parent && !IsTopLevel())
+        m_parent->InvalidateBestSize();
+}
+

 // return the size best suited for the current window
 wxSize wxWindowBase::DoGetBestSize() const
 {
 // return the size best suited for the current window
 wxSize wxWindowBase::DoGetBestSize() const
 {

+    wxSize best;
+

     if ( m_windowSizer )
     {
     if ( m_windowSizer )
     {

-        return m_windowSizer->GetMinSize();
+        best = GetWindowSizeForVirtualSize(m_windowSizer->GetMinSize());

     }
 #if wxUSE_CONSTRAINTS
     else if ( m_constraints )
     }
 #if wxUSE_CONSTRAINTS
     else if ( m_constraints )


@@ -555,7 +493,7 @@ wxSize wxWindowBase::DoGetBestSize() const
             //       will never return a size bigger than the current one :-(
         }
 
             //       will never return a size bigger than the current one :-(
         }
 

-        return wxSize(maxX, maxY);
+        best = wxSize(maxX, maxY);

     }
 #endif // wxUSE_CONSTRAINTS
     else if ( !GetChildren().empty()
     }
 #endif // wxUSE_CONSTRAINTS
     else if ( !GetChildren().empty()


@@ -590,9 +528,9 @@ wxSize wxWindowBase::DoGetBestSize() const
 
             // if the window hadn't been positioned yet, assume that it is in
             // the origin
 
             // if the window hadn't been positioned yet, assume that it is in
             // the origin

-            if ( wx == wxDefaultPosition.x )
+            if ( wx == wxDefaultCoord )

                 wx = 0;
                 wx = 0;

-            if ( wy == wxDefaultPosition.y )
+            if ( wy == wxDefaultCoord )

                 wy = 0;
 
             win->GetSize(&ww, &wh);
                 wy = 0;
 
             win->GetSize(&ww, &wh);


@@ -607,60 +545,82 @@ wxSize wxWindowBase::DoGetBestSize() const
         maxX += 7;
         maxY += 14;
 
         maxX += 7;
         maxY += 14;
 

-        return wxSize(maxX, maxY);
+        best = wxSize(maxX, maxY);

     }
     else // ! has children
     {
     }
     else // ! has children
     {

-        // for a generic window there is no natural best size - just use either the
-        // minimum size if there is one, or the current size
-        if ( GetMinSize().IsFullySpecified() )
-            return GetMinSize();
-        else
-            return GetSize();
+        // for a generic window there is no natural best size so, if the
+        // minimal size is not set, use the current size but take care to
+        // remember it as minimal size for the next time because our best size
+        // should be constant: otherwise we could get into a situation when the
+        // window is initially at some size, then expanded to a larger size and
+        // then, when the containing window is shrunk back (because our initial
+        // best size had been used for computing the parent min size), we can't
+        // be shrunk back any more because our best size is now bigger
+        wxSize size = GetMinSize();
+        if ( !size.IsFullySpecified() )
+        {
+            size.SetDefaults(GetSize());
+            wxConstCast(this, wxWindowBase)->SetMinSize(size);
+        }
+
+        // return as-is, unadjusted by the client size difference.
+        return size;

     }
     }

+
+    // Add any difference between size and client size
+    wxSize diff = GetSize() - GetClientSize();
+    best.x += wxMax(0, diff.x);
+    best.y += wxMax(0, diff.y);
+
+    return best;

 }
 
 }
 

-void wxWindowBase::SetBestSize(const wxSize& size)
+
+wxSize wxWindowBase::GetBestFittingSize() const

 {
 {

-    // If the given size is incomplete then merge with the best size.
-    wxSize sizeBest;
-    if ( size.x == wxDefaultSize.x || size.y == wxDefaultSize.y )
-    {
-        sizeBest = DoGetBestSize();
-        if ( size.x != wxDefaultSize.x )
-            sizeBest.x = size.x;
-        if ( size.y != wxDefaultSize.y )
-            sizeBest.y = size.y;
-    }
-    else // have complete explicit size
+    // merge the best size with the min size, giving priority to the min size
+    wxSize min = GetMinSize();
+    if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)

     {
     {

-        sizeBest = size;
+        wxSize best = GetBestSize();
+        if (min.x == wxDefaultCoord) min.x =  best.x;
+        if (min.y == wxDefaultCoord) min.y =  best.y;

     }
     }

+    return min;
+}
+

 
 

-    // Change the size if needed
-    if (GetSize() != sizeBest)
-        SetSize(sizeBest);
+void wxWindowBase::SetBestFittingSize(const wxSize& size)
+{
+    // Set the min size to the size passed in.  This will usually either be
+    // wxDefaultSize or the size passed to this window's ctor/Create function.
+    SetMinSize(size);

 
 

-    // don't shrink the control below its best size
-    m_minWidth = sizeBest.x;
-    m_minHeight = sizeBest.y;
+    // Merge the size with the best size if needed
+    wxSize best = GetBestFittingSize();
+
+    // If the current size doesn't match then change it
+    if (GetSize() != best)
+        SetSize(best);

 }
 
 }
 

+

 // by default the origin is not shifted
 wxPoint wxWindowBase::GetClientAreaOrigin() const
 {
 // by default the origin is not shifted
 wxPoint wxWindowBase::GetClientAreaOrigin() const
 {

-    return wxPoint(0, 0);
+    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::DoSetSizeHints(int minW, int minH,
+                                  int maxW, int maxH,
+                                  int WXUNUSED(incW), int WXUNUSED(incH))

 {
     // setting min width greater than max width leads to infinite loops under
     // X11 and generally doesn't make any sense, so don't allow it
 {
     // setting min width greater than max width leads to infinite loops under
     // X11 and generally doesn't make any sense, so don't allow it

-    wxCHECK_RET( (minW == wxDefaultSize.x || maxW == wxDefaultSize.x || minW <= maxW) &&
-                    (minH == wxDefaultSize.y || maxH == wxDefaultSize.y || minH <= maxH),
+    wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
+                    (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),

                  _T("min width/height must be less than max width/height!") );
 
     m_minWidth = minW;
                  _T("min width/height must be less than max width/height!") );
 
     m_minWidth = minW;


@@ -725,13 +685,13 @@ void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 
 void wxWindowBase::DoSetVirtualSize( int x, int y )
 {
 
 void wxWindowBase::DoSetVirtualSize( int x, int y )
 {

-    if ( m_minVirtualWidth != wxDefaultSize.x && m_minVirtualWidth > x )
+    if ( m_minVirtualWidth != wxDefaultCoord && m_minVirtualWidth > x )

         x = m_minVirtualWidth;
         x = m_minVirtualWidth;

-    if ( m_maxVirtualWidth != wxDefaultSize.x && m_maxVirtualWidth < x )
+    if ( m_maxVirtualWidth != wxDefaultCoord && m_maxVirtualWidth < x )

         x = m_maxVirtualWidth;
         x = m_maxVirtualWidth;

-    if ( m_minVirtualHeight != wxDefaultSize.y && m_minVirtualHeight > y )
+    if ( m_minVirtualHeight != wxDefaultCoord && m_minVirtualHeight > y )

         y = m_minVirtualHeight;
         y = m_minVirtualHeight;

-    if ( m_maxVirtualHeight != wxDefaultSize.y && m_maxVirtualHeight < y )
+    if ( m_maxVirtualHeight != wxDefaultCoord && m_maxVirtualHeight < y )

         y = m_maxVirtualHeight;
 
     m_virtualSize = wxSize(x, y);
         y = m_maxVirtualHeight;
 
     m_virtualSize = wxSize(x, y);


@@ -739,10 +699,29 @@ void wxWindowBase::DoSetVirtualSize( int x, int y )
 
 wxSize wxWindowBase::DoGetVirtualSize() const
 {
 
 wxSize wxWindowBase::DoGetVirtualSize() const
 {

-    wxSize  s( GetClientSize() );
+    // we should use the entire client area so if it is greater than our
+    // virtual size, expand it to fit (otherwise if the window is big enough we
+    // wouldn't be using parts of it)
+    wxSize size = GetClientSize();
+    if ( m_virtualSize.x > size.x )
+        size.x = m_virtualSize.x;

 
 

-    return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
-                   wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
+    if ( m_virtualSize.y >= size.y )
+        size.y = m_virtualSize.y;
+
+    return size;
+}
+
+void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
+{
+    // screen position is the same as (0, 0) in client coords for non TLWs (and
+    // TLWs override this method)
+    if ( x )
+        *x = 0;
+    if ( y )
+        *y = 0;
+
+    ClientToScreen(x, y);

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


@@ -935,18 +914,25 @@ void wxWindowBase::InheritAttributes()
     // which ensures that this only happens if the user really wants it and
     // not by default which wouldn't make any sense in modern GUIs where the
     // controls don't all use the same fonts (nor colours)
     // which ensures that this only happens if the user really wants it and
     // not by default which wouldn't make any sense in modern GUIs where the
     // controls don't all use the same fonts (nor colours)

-    if ( parent->m_hasFont && !m_hasFont )
+    if ( parent->m_inheritFont && !m_hasFont )

         SetFont(parent->GetFont());
 
     // in addition, there is a possibility to explicitly forbid inheriting
     // colours at each class level by overriding ShouldInheritColours()
     if ( ShouldInheritColours() )
     {
         SetFont(parent->GetFont());
 
     // in addition, there is a possibility to explicitly forbid inheriting
     // colours at each class level by overriding ShouldInheritColours()
     if ( ShouldInheritColours() )
     {

-        if ( parent->m_hasFgCol && !m_hasFgCol )
+        if ( parent->m_inheritFgCol && !m_hasFgCol )

             SetForegroundColour(parent->GetForegroundColour());
 
             SetForegroundColour(parent->GetForegroundColour());
 

-        if ( parent->m_hasBgCol && !m_hasBgCol )
+        // inheriting (solid) background colour is wrong as it totally breaks
+        // any kind of themed backgrounds
+        //
+        // instead, the controls should use the same background as their parent
+        // (ideally by not drawing it at all)
+#if 0
+        if ( parent->m_inheritBgCol && !m_hasBgCol )

             SetBackgroundColour(parent->GetBackgroundColour());
             SetBackgroundColour(parent->GetBackgroundColour());

+#endif // 0

     }
 }
 
     }
 }
 


@@ -958,8 +944,17 @@ wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
     wxVisualAttributes attrs;
     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
     wxVisualAttributes attrs;
     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);

-    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);

 
 

+    // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
+    // the usual background colour than wxSYS_COLOUR_BTNFACE.
+    // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
+    // colour on other platforms.
+
+#if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
+    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
+#else
+    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
+#endif

     return attrs;
 }
 
     return attrs;
 }
 


@@ -980,11 +975,10 @@ wxColour wxWindowBase::GetBackgroundColour() const
         if ( !colBg.Ok() )
             colBg = GetClassDefaultAttributes().colBg;
 
         if ( !colBg.Ok() )
             colBg = GetClassDefaultAttributes().colBg;
 

-        // cache it for the next call
-        wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
+        return colBg;

     }
     }

-
-    return m_backgroundColour;
+    else
+        return m_backgroundColour;

 }
 
 wxColour wxWindowBase::GetForegroundColour() const
 }
 
 wxColour wxWindowBase::GetForegroundColour() const


@@ -999,18 +993,22 @@ wxColour wxWindowBase::GetForegroundColour() const
         if ( !colFg.Ok() )
             colFg = GetClassDefaultAttributes().colFg;
 
         if ( !colFg.Ok() )
             colFg = GetClassDefaultAttributes().colFg;
 

-        wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
+        return colFg;

     }
     }

-
-    return m_foregroundColour;
+    else
+        return m_foregroundColour;

 }
 
 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 {
 }
 
 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 {

-    if ( colour == m_backgroundColour ) 
+    if ( colour == m_backgroundColour )

         return false;
 
     m_hasBgCol = colour.Ok();
         return false;
 
     m_hasBgCol = colour.Ok();

+    if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
+        m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
+
+    m_inheritBgCol = m_hasBgCol;

     m_backgroundColour = colour;
     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
     return true;
     m_backgroundColour = colour;
     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
     return true;


@@ -1022,6 +1020,7 @@ bool wxWindowBase::SetForegroundColour( const wxColour &colour )
         return false;
 
     m_hasFgCol = colour.Ok();
         return false;
 
     m_hasFgCol = colour.Ok();

+    m_inheritFgCol = m_hasFgCol;

     m_foregroundColour = colour;
     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
     return true;
     m_foregroundColour = colour;
     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
     return true;


@@ -1042,7 +1041,7 @@ bool wxWindowBase::SetCursor(const wxCursor& cursor)
     return true;
 }
 
     return true;
 }
 

-wxFont& wxWindowBase::DoGetFont() const
+wxFont wxWindowBase::GetFont() const

 {
     // logic is the same as in GetBackgroundColour()
     if ( !m_font.Ok() )
 {
     // logic is the same as in GetBackgroundColour()
     if ( !m_font.Ok() )


@@ -1053,18 +1052,14 @@ wxFont& wxWindowBase::DoGetFont() const
         if ( !font.Ok() )
             font = GetClassDefaultAttributes().font;
 
         if ( !font.Ok() )
             font = GetClassDefaultAttributes().font;
 

-        wxConstCast(this, wxWindowBase)->m_font = font;
+        return font;

     }
     }

-
-    // cast is here for non-const GetFont() convenience
-    return wxConstCast(this, wxWindowBase)->m_font;
+    else
+        return m_font;

 }
 
 bool wxWindowBase::SetFont(const wxFont& font)
 {
 }
 
 bool wxWindowBase::SetFont(const wxFont& font)
 {

-    if ( !font.Ok() )
-        return false;
-

     if ( font == m_font )
     {
         // no change
     if ( font == m_font )
     {
         // no change


@@ -1072,8 +1067,10 @@ bool wxWindowBase::SetFont(const wxFont& font)
     }
 
     m_font = font;
     }
 
     m_font = font;

+    m_hasFont = font.Ok();
+    m_inheritFont = m_hasFont;

 
 

-    m_hasFont = true;
+    InvalidateBestSize();

 
     return true;
 }
 
     return true;
 }


@@ -1179,7 +1176,7 @@ void wxWindowBase::ClearBackground()
 // find child window by id or name
 // ----------------------------------------------------------------------------
 
 // find child window by id or name
 // ----------------------------------------------------------------------------
 

-wxWindow *wxWindowBase::FindWindow( long id )
+wxWindow *wxWindowBase::FindWindow(long id) const

 {
     if ( id == m_windowId )
         return (wxWindow *)this;
 {
     if ( id == m_windowId )
         return (wxWindow *)this;


@@ -1195,7 +1192,7 @@ wxWindow *wxWindowBase::FindWindow( long id )
     return (wxWindow *)res;
 }
 
     return (wxWindow *)res;
 }
 

-wxWindow *wxWindowBase::FindWindow( const wxString& name )
+wxWindow *wxWindowBase::FindWindow(const wxString& name) const

 {
     if ( name == m_windowName )
         return (wxWindow *)this;
 {
     if ( name == m_windowName )
         return (wxWindow *)this;


@@ -1327,7 +1324,7 @@ wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
 wxWindow *
 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
 {
 wxWindow *
 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
 {

-    return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
+    return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);

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


@@ -1717,7 +1714,7 @@ bool wxWindowBase::Layout()
     // 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;
+        int w = 0, h = 0;

         GetVirtualSize(&w, &h);
         GetSizer()->SetDimension( 0, 0, w, h );
     }
         GetVirtualSize(&w, &h);
         GetSizer()->SetDimension( 0, 0, w, h );
     }


@@ -1884,22 +1881,22 @@ void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr )
     {
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr )
     {

-        if ( x != wxDefaultPosition.x )
+        if ( x != wxDefaultCoord )

         {
             constr->left.SetValue(x);
             constr->left.SetDone(true);
         }
         {
             constr->left.SetValue(x);
             constr->left.SetDone(true);
         }

-        if ( y != wxDefaultPosition.y )
+        if ( y != wxDefaultCoord )

         {
             constr->top.SetValue(y);
             constr->top.SetDone(true);
         }
         {
             constr->top.SetValue(y);
             constr->top.SetDone(true);
         }

-        if ( w != wxDefaultSize.x )
+        if ( w != wxDefaultCoord )

         {
             constr->width.SetValue(w);
             constr->width.SetDone(true);
         }
         {
             constr->width.SetValue(w);
             constr->width.SetDone(true);
         }

-        if ( h != wxDefaultSize.y )
+        if ( h != wxDefaultCoord )

         {
             constr->height.SetValue(h);
             constr->height.SetDone(true);
         {
             constr->height.SetValue(h);
             constr->height.SetDone(true);


@@ -1912,12 +1909,12 @@ void wxWindowBase::MoveConstraint(int x, int y)
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr )
     {
     wxLayoutConstraints *constr = GetConstraints();
     if ( constr )
     {

-        if ( x != wxDefaultPosition.x )
+        if ( x != wxDefaultCoord )

         {
             constr->left.SetValue(x);
             constr->left.SetDone(true);
         }
         {
             constr->left.SetValue(x);
             constr->left.SetDone(true);
         }

-        if ( y != wxDefaultPosition.y )
+        if ( y != wxDefaultCoord )

         {
             constr->top.SetValue(y);
             constr->top.SetDone(true);
         {
             constr->top.SetValue(y);
             constr->top.SetDone(true);


@@ -1986,7 +1983,7 @@ void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) co
 void wxWindowBase::UpdateWindowUI(long flags)
 {
     wxUpdateUIEvent event(GetId());
 void wxWindowBase::UpdateWindowUI(long flags)
 {
     wxUpdateUIEvent event(GetId());

-    event.m_eventObject = this;
+    event.SetEventObject(this);

 
     if ( GetEventHandler()->ProcessEvent(event) )
     {
 
     if ( GetEventHandler()->ProcessEvent(event) )
     {


@@ -2006,42 +2003,13 @@ void wxWindowBase::UpdateWindowUI(long flags)
 }
 
 // do the window-specific processing after processing the update event
 }
 
 // do the window-specific processing after processing the update event

-// TODO: take specific knowledge out of this function and
-// put in each control's base class. Unfortunately we don't
-// yet have base implementation files for wxCheckBox and wxRadioButton.

 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 {
     if ( event.GetSetEnabled() )
         Enable(event.GetEnabled());
 
 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 {
     if ( event.GetSetEnabled() )
         Enable(event.GetEnabled());
 

-#if wxUSE_CONTROLS
-    if ( event.GetSetText() )
-    {
-        wxControl *control = wxDynamicCastThis(wxControl);
-        if ( control )
-        {
-            if ( event.GetText() != control->GetLabel() )
-                control->SetLabel(event.GetText());
-        }
-#if wxUSE_CHECKBOX
-        wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
-        if ( checkbox )
-        {
-            if ( event.GetSetChecked() )
-                checkbox->SetValue(event.GetChecked());
-        }
-#endif // wxUSE_CHECKBOX
-
-#if wxUSE_RADIOBTN
-        wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
-        if ( radiobtn )
-        {
-            if ( event.GetSetChecked() )
-                radiobtn->SetValue(event.GetChecked());
-        }
-#endif // wxUSE_RADIOBTN
-    }
-#endif
+    if ( event.GetSetShown() )
+        Show(event.GetShown());

 }
 
 #if 0
 }
 
 #if 0


@@ -2069,10 +2037,10 @@ wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
 {
     int charWidth = GetCharWidth();
     int charHeight = GetCharHeight();
 {
     int charWidth = GetCharWidth();
     int charHeight = GetCharHeight();

-    wxPoint pt2(-1, -1);
-    if (pt.x != -1)
+    wxPoint pt2 = wxDefaultPosition;
+    if (pt.x != wxDefaultCoord)

         pt2.x = (int) ((pt.x * 4) / charWidth);
         pt2.x = (int) ((pt.x * 4) / charWidth);

-    if (pt.y != -1)
+    if (pt.y != wxDefaultCoord)

         pt2.y = (int) ((pt.y * 8) / charHeight);
 
     return pt2;
         pt2.y = (int) ((pt.y * 8) / charHeight);
 
     return pt2;


@@ -2082,10 +2050,10 @@ wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
 {
     int charWidth = GetCharWidth();
     int charHeight = GetCharHeight();
 {
     int charWidth = GetCharWidth();
     int charHeight = GetCharHeight();

-    wxPoint pt2(-1, -1);
-    if (pt.x != -1)
+    wxPoint pt2 = wxDefaultPosition;
+    if (pt.x != wxDefaultCoord)

         pt2.x = (int) ((pt.x * charWidth) / 4);
         pt2.x = (int) ((pt.x * charWidth) / 4);

-    if (pt.y != -1)
+    if (pt.y != wxDefaultCoord)

         pt2.y = (int) ((pt.y * charHeight) / 8);
 
     return pt2;
         pt2.y = (int) ((pt.y * charHeight) / 8);
 
     return pt2;


@@ -2106,12 +2074,14 @@ void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
         if ( !win->IsTopLevel() )
         {
             wxSysColourChangedEvent event2;
         if ( !win->IsTopLevel() )
         {
             wxSysColourChangedEvent event2;

-            event.m_eventObject = win;
+            event.SetEventObject(win);

             win->GetEventHandler()->ProcessEvent(event2);
         }
 
         node = node->GetNext();
     }
             win->GetEventHandler()->ProcessEvent(event2);
         }
 
         node = node->GetNext();
     }

+
+    Refresh();

 }
 
 // the default action is to populate dialog with data when it's created,
 }
 
 // the default action is to populate dialog with data when it's created,


@@ -2125,12 +2095,82 @@ void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
     UpdateWindowUI(wxUPDATE_UI_RECURSE);
 }
 
     UpdateWindowUI(wxUPDATE_UI_RECURSE);
 }
 

-// process Ctrl-Alt-mclick
+// methods for drawing the sizers in a visible way
+#ifdef __WXDEBUG__
+
+static void DrawSizers(wxWindowBase *win);
+
+static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
+{
+    wxClientDC dc((wxWindow *)win);
+    dc.SetPen(*wxRED_PEN);
+    dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
+    dc.DrawRectangle(rect.Deflate(1, 1));
+}
+
+static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
+{
+    const wxSizerItemList& items = sizer->GetChildren();
+    for ( wxSizerItemList::const_iterator i = items.begin(),
+                                        end = items.end();
+          i != end;
+          ++i )
+    {
+        wxSizerItem *item = *i;
+        if ( item->IsSizer() )
+        {
+            DrawBorder(win, item->GetRect().Deflate(2));
+            DrawSizer(win, item->GetSizer());
+        }
+        else if ( item->IsSpacer() )
+        {
+            DrawBorder(win, item->GetRect().Deflate(2), true);
+        }
+        else if ( item->IsWindow() )
+        {
+            DrawSizers(item->GetWindow());
+        }
+    }
+}
+
+static void DrawSizers(wxWindowBase *win)
+{
+    wxSizer *sizer = win->GetSizer();
+    if ( sizer )
+    {
+        DrawBorder(win, win->GetClientSize());
+        DrawSizer(win, sizer);
+    }
+    else // no sizer, still recurse into the children
+    {
+        const wxWindowList& children = win->GetChildren();
+        for ( wxWindowList::const_iterator i = children.begin(),
+                                         end = children.end();
+              i != end;
+              ++i )
+        {
+            DrawSizers(*i);
+        }
+    }
+}
+
+#endif // __WXDEBUG__
+
+// process special middle clicks

 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 {
 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 {

-#if wxUSE_MSGDLG

     if ( event.ControlDown() && event.AltDown() )
     {
     if ( event.ControlDown() && event.AltDown() )
     {

+#ifdef __WXDEBUG__
+        // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
+        if ( event.ShiftDown() )
+        {
+            DrawSizers(this);
+            return;
+        }
+#endif // __WXDEBUG__
+
+#if wxUSE_MSGDLG

         // don't translate these strings
         wxString port;
 
         // don't translate these strings
         wxString port;
 


@@ -2140,32 +2180,36 @@ void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 
         switch ( wxGetOsVersion() )
         {
 
         switch ( wxGetOsVersion() )
         {

-            case wxMOTIF_X:     port += _T("Motif"); break;
+            case wxMOTIF_X:            port += _T("Motif"); break;

             case wxMAC:
             case wxMAC:

-            case wxMAC_DARWIN:  port += _T("Mac"); break;
-            case wxBEOS:        port += _T("BeOS"); break;
+            case wxMAC_DARWIN:         port += _T("Mac"); break;
+            case wxBEOS:               port += _T("BeOS"); break;

             case wxGTK:
             case wxGTK_WIN32:
             case wxGTK_OS2:
             case wxGTK:
             case wxGTK_WIN32:
             case wxGTK_OS2:

-            case wxGTK_BEOS:    port += _T("GTK"); break;
+            case wxGTK_BEOS:           port += _T("GTK"); break;

             case wxWINDOWS:
             case wxPENWINDOWS:
             case wxWINDOWS_NT:
             case wxWIN32S:
             case wxWIN95:
             case wxWINDOWS:
             case wxPENWINDOWS:
             case wxWINDOWS_NT:
             case wxWIN32S:
             case wxWIN95:

-            case wxWIN386:      port += _T("MS Windows"); break;
+            case wxWIN386:             port += _T("MS Windows"); break;

             case wxMGL_UNIX:
             case wxMGL_X:
             case wxMGL_WIN32:
             case wxMGL_UNIX:
             case wxMGL_X:
             case wxMGL_WIN32:

-            case wxMGL_OS2:     port += _T("MGL"); break;
+            case wxMGL_OS2:            port += _T("MGL"); break;

             case wxWINDOWS_OS2:
             case wxWINDOWS_OS2:

-            case wxOS2_PM:      port += _T("OS/2"); break;
+            case wxOS2_PM:             port += _T("OS/2"); break;
+            case wxPALMOS:             port += _T("Palm OS"); break;
+            case wxWINDOWS_CE:         port += _T("Windows CE (generic)"); break;
+            case wxWINDOWS_POCKETPC:   port += _T("Windows CE PocketPC"); break;
+            case wxWINDOWS_SMARTPHONE: port += _T("Windows CE Smartphone"); break;

             default:            port += _T("unknown"); break;
         }
 
         wxMessageBox(wxString::Format(
                                       _T(
             default:            port += _T("unknown"); break;
         }
 
         wxMessageBox(wxString::Format(
                                       _T(

-                                        "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
+                                        "       wxWidgets Library (%s port)\nVersion %d.%d.%d%s%s, compiled at %s %s%s\n   Copyright (c) 1995-2006 wxWidgets team"

                                         ),
                                       port.c_str(),
                                       wxMAJOR_VERSION,
                                         ),
                                       port.c_str(),
                                       wxMAJOR_VERSION,


@@ -2175,9 +2219,19 @@ void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
                                       L" (Unicode)",
 #else
                                       "",
                                       L" (Unicode)",
 #else
                                       "",

+#endif
+#ifdef __WXDEBUG__
+                                      _T(" Debug build"),
+#else
+                                      wxEmptyString,

 #endif
                                       __TDATE__,
 #endif
                                       __TDATE__,

-                                      __TTIME__
+                                      __TTIME__,
+#ifdef __WXGTK__
+                                      wxString::Format(_T("\nagainst GTK+ %d.%d.%d. Runtime GTK+ version: %d.%d.%d"), GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION, gtk_major_version, gtk_minor_version, gtk_micro_version).c_str()
+#else
+                                      ""
+#endif

                                      ),
                      _T("wxWidgets information"),
                      wxICON_INFORMATION | wxOK,
                                      ),
                      _T("wxWidgets information"),
                      wxICON_INFORMATION | wxOK,


@@ -2220,15 +2274,22 @@ wxAccessible* wxWindowBase::CreateAccessible()
 
 #endif
 
 
 #endif
 

-#if !wxUSE_STL

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

+#if wxUSE_STL
+
+#include "wx/listimpl.cpp"
+WX_DEFINE_LIST(wxWindowList)
+
+#else
+

 void wxWindowListNode::DeleteData()
 {
     delete (wxWindow *)GetData();
 }
 void wxWindowListNode::DeleteData()
 {
     delete (wxWindow *)GetData();
 }

+

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


@@ -2375,7 +2436,7 @@ bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
 
 bool wxWindowBase::TryParent(wxEvent& event)
 {
 
 bool wxWindowBase::TryParent(wxEvent& event)
 {

-    // carry on up the parent-child hierarchy if the propgation count hasn't
+    // carry on up the parent-child hierarchy if the propagation count hasn't

     // reached zero yet
     if ( event.ShouldPropagate() )
     {
     // reached zero yet
     if ( event.ShouldPropagate() )
     {


@@ -2399,7 +2460,7 @@ bool wxWindowBase::TryParent(wxEvent& event)
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// navigation
+// keyboard navigation

 // ----------------------------------------------------------------------------
 
 // Navigates in the specified direction.
 // ----------------------------------------------------------------------------
 
 // Navigates in the specified direction.


@@ -2415,6 +2476,51 @@ bool wxWindowBase::Navigate(int flags)
     return false;
 }
 
     return false;
 }
 

+void wxWindowBase::DoMoveInTabOrder(wxWindow *win, MoveKind move)
+{
+    // check that we're not a top level window
+    wxCHECK_RET( GetParent(),
+                    _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
+
+    // detect the special case when we have nothing to do anyhow and when the
+    // code below wouldn't work
+    if ( win == this )
+        return;
+
+    // find the target window in the siblings list
+    wxWindowList& siblings = GetParent()->GetChildren();
+    wxWindowList::compatibility_iterator i = siblings.Find(win);
+    wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
+
+    // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
+    // can't just move the node around
+    wxWindow *self = (wxWindow *)this;
+    siblings.DeleteObject(self);
+    if ( move == MoveAfter )
+    {
+        i = i->GetNext();
+    }
+
+    if ( i )
+    {
+        siblings.Insert(i, self);
+    }
+    else // MoveAfter and win was the last sibling
+    {
+        siblings.Append(self);
+    }
+}
+
+// ----------------------------------------------------------------------------
+// focus handling
+// ----------------------------------------------------------------------------
+
+/*static*/ wxWindow* wxWindowBase::FindFocus()
+{
+    wxWindowBase *win = DoFindFocus();
+    return win ? win->GetMainWindowOfCompositeControl() : NULL;
+}
+

 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // global functions
 // ----------------------------------------------------------------------------


@@ -2592,7 +2698,7 @@ wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
 #endif
         title = GetWindow()->GetName();
 
 #endif
         title = GetWindow()->GetName();
 

-    if (!title.IsEmpty())
+    if (!title.empty())

     {
         *name = title;
         return wxACC_OK;
     {
         *name = title;
         return wxACC_OK;


@@ -2698,7 +2804,7 @@ wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString*
         return wxACC_FAIL;
 
     wxString ht(GetWindow()->GetHelpText());
         return wxACC_FAIL;
 
     wxString ht(GetWindow()->GetHelpText());

-    if (!ht.IsEmpty())
+    if (!ht.empty())

     {
         *description = ht;
         return wxACC_OK;
     {
         *description = ht;
         return wxACC_OK;


@@ -2714,7 +2820,7 @@ wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* hel
         return wxACC_FAIL;
 
     wxString ht(GetWindow()->GetHelpText());
         return wxACC_FAIL;
 
     wxString ht(GetWindow()->GetHelpText());

-    if (!ht.IsEmpty())
+    if (!ht.empty())

     {
         *helpText = ht;
         return wxACC_OK;
     {
         *helpText = ht;
         return wxACC_OK;


@@ -2834,7 +2940,7 @@ wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible**
 // Gets a variant representing the selected children
 // of this object.
 // Acceptable values:
 // Gets a variant representing the selected children
 // of this object.
 // Acceptable values:

-// - a null variant (IsNull() returns TRUE)
+// - a null variant (IsNull() returns true)

 // - a list variant (GetType() == wxT("list")
 // - an integer representing the selected child element,
 //   or 0 if this object is selected (GetType() == wxT("long")
 // - a list variant (GetType() == wxT("list")
 // - an integer representing the selected child element,
 //   or 0 if this object is selected (GetType() == wxT("long")