black now denotes 0 on mono-bitmaps.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5419 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk1/dcmemory.h

@@ -37,6 +37,15 @@ public:
     virtual void SelectObject( const wxBitmap& bitmap );
     void DoGetSize( int *width, int *height ) const;
 
+    // these get reimplemented for mono-bitmaps to behave
+    // more like their Win32 couterparts. They now interpret
+    // wxWHITE, wxWHITE_BRUSH and wxWHITE_PEN as drawing 0
+    // and everything else as drawing 1.
+    virtual void SetPen( const wxPen &pen );
+    virtual void SetBrush( const wxBrush &brush );
+    virtual void SetTextForeground( const wxColour &col );
+    virtual void SetTextBackground( const wxColour &col );
+
     // implementation
     wxBitmap  m_selected;