use COLORONCOLOR stretching mode in DrawBitmap() too (see #3400)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60034 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/dc.cpp

@@ -1294,6 +1294,10 @@ void wxMSWDCImpl::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool
             return;
     }
 
+#ifndef __WXWINCE__
+    StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR);
+#endif
+
     if ( useMask )
     {
         wxMask *mask = bmp.GetMask();