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

src/msw/stattext.cpp

@@ -126,27 +126,6 @@ WXDWORD wxStaticText::MSWGetStyle(long style, WXDWORD *exstyle) const
     return msStyle;
 }
 
-WXHBRUSH wxStaticText::DoMSWControlColor(WXHDC pDC, wxColour colBg)
-{
-    // If this control has a non-standard fg colour but still has the standard
-    // bg then we need to also give it a non-standard bg otherwise the fg
-    // setting has no effect.
-    WXHBRUSH hbr = wxControl::DoMSWControlColor(pDC, colBg);
-    if (!hbr && m_hasFgCol)
-    {
-        hbr = MSWGetBgBrushForChild(pDC, this);
-        if (!hbr)
-        {
-            HDC hdc = (HDC)pDC;
-            wxColour bg = GetBackgroundColour();
-            ::SetBkColor(hdc, wxColourToRGB(bg));
-            wxBrush *brush = wxTheBrushList->FindOrCreateBrush(bg, wxSOLID);
-            hbr = (WXHBRUSH)brush->GetResourceHandle();
-        }
-    }
-    return hbr;
-}
-
 wxSize wxStaticText::DoGetBestSize() const
 {
     wxClientDC dc(wx_const_cast(wxStaticText *, this));