// sets the antialiasing mode, returns true if it supported
virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0;
// returns the current compositing operator
virtual wxCompositionMode GetCompositionMode() const { return m_composition; }
// sets the antialiasing mode, returns true if it supported
virtual bool SetAntialiasMode(wxAntialiasMode antialias) = 0;
// returns the current compositing operator
virtual wxCompositionMode GetCompositionMode() const { return m_composition; }