1. wxPaintDC reuse now seems to actually work instead of leading to mysterious

bugs (but I still don't know why should we have it at all)
2. wxMenuItem initializes m_bChecked variable - thanks Purify
3. don't try to delete the brush which couldn't be created in app.cpp


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2724 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/dc.cpp

@@ -639,7 +639,6 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask )
         HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
         ::SelectObject( memdc, hbitmap );
         ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY);
-        ::SelectObject( memdc, 0 );
         ::DeleteDC( memdc );
     }
     else