simplifications and corrections to background drawing:

1. removed ApplyParentThemeBackground() not used any longer
2. removed ProvidesBackground() which is synonymous with
   !HasTransparentBackground()
3. removed a whole bunch of unused MSWXXX() methods
4. moved MSWControlColor() from wxWindow up to wxControl

results:

1. the gradient is still shown properly for static/radio boxes in notebooks
2. correct background colour is used for the static boxes
3. code is shorter and better commented


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33474 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/statbox.h

@@ -49,6 +49,8 @@ protected:
     virtual wxBorder GetDefaultBorder() const;
 
     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
+
+#ifndef __WXWINCE__
     virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
 
     // return the region with all the windows inside this static box excluded
@@ -58,12 +60,13 @@ protected:
     // region which is embedded in a rectangle (0, 0)-(w, h)
     virtual void MSWGetRegionWithoutSelf(WXHRGN hrgn, int w, int h);
 
-    // paint the given rectangle with our background colour
+    // paint the given rectangle with our background brush/colour
     void PaintBackground(wxDC& dc, const struct tagRECT& rc);
 
     void OnPaint(wxPaintEvent& event);
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxStaticBox)
+#endif // !__WXWINCE__
 };
 
 #endif // _WX_MSW_STATBOX_H_