Prevent surplus calls of _size_allocate() if no change

[wxWidgets.git] / src / msw / statbmp.cpp

diff --git a/src/msw/statbmp.cpp b/src/msw/statbmp.cpp
index d504aeb2c6c958378e3c918394832bfdb19e084c..418541bfd900bedb20b33f5fd6ca173d8119a752 100644 (file)
--- a/src/msw/statbmp.cpp
+++ b/src/msw/statbmp.cpp
@@ -29,6 +29,7 @@
 #include "wx/statbmp.h"
 
 #ifndef WX_PRECOMP
+    #include "wx/app.h"
     #include "wx/window.h"
     #include "wx/icon.h"
     #include "wx/dcclient.h"
@@ -169,13 +170,20 @@ bool wxStaticBitmap::Create(wxWindow *parent,
     // GetBestSize will work properly now, so set the best size if needed
     SetInitialSize(size);
 
-    // Win9x and 2000 don't draw correctly the images with alpha channel so we
-    // need to draw them ourselves and it's easier to just always do it rather
-    // than check if we have an image with alpha or not
-    if ( wxGetWinVersion() <= wxWinVersion_2000 )
+    // painting manually is reported not to work under Windows CE (see #10093),
+    // so don't do it there even if this probably means that alpha is not
+    // supported there -- but at least bitmaps without alpha appear correctly
+#ifndef __WXWINCE__
+    // Windows versions before XP (and even XP if the application has no
+    // manifest and so the old comctl32.dll is used) don't draw correctly the
+    // images with alpha channel so we need to draw them ourselves and it's
+    // easier to just always do it rather than check if we have an image with
+    // alpha or not
+    if ( wxTheApp->GetComCtl32Version() < 600 )
     {
         Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBitmap::DoPaintManually));
     }
+#endif // !__WXWINCE__
 
     return true;
 }
@@ -249,6 +257,8 @@ wxSize wxStaticBitmap::DoGetBestSize() const
     return wxSize(16, 16);
 }
 
+#ifndef __WXWINCE__
+
 void wxStaticBitmap::DoPaintManually(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dc(this);
@@ -256,8 +266,11 @@ void wxStaticBitmap::DoPaintManually(wxPaintEvent& WXUNUSED(event))
     const wxSize size(GetSize());
     const wxBitmap bmp(GetBitmap());
 
-    // Clear the background
-    dc.SetBrush(GetBackgroundColour());
+    // Clear the background: notice that we're supposed to be transparent, so
+    // use the parent background colour if we don't have our own instead of
+    // falling back to the default
+    const wxWindow *win = UseBgCol() ? this : GetParent();
+    dc.SetBrush(win->GetBackgroundColour());
     dc.SetPen(*wxTRANSPARENT_PEN);
     dc.DrawRectangle(0, 0, size.GetWidth(), size.GetHeight());
 
@@ -268,6 +281,8 @@ void wxStaticBitmap::DoPaintManually(wxPaintEvent& WXUNUSED(event))
                   true /* use mask */);
 }
 
+#endif // !__WXWINCE__
+
 void wxStaticBitmap::SetImage( const wxGDIImage* image )
 {
     wxGDIImage* convertedImage = ConvertImage( *image );