+ wxMemoryDC(wxDC* pDC); // Create compatible DC
+
+ virtual void SelectObject(const wxBitmap& rBitmap);
+protected:
+ // override some base class virtuals
+ virtual void DoGetSize( int* pWidth
+ ,int* pHeight
+ ) const;
+ // create DC compatible with the given one or screen if dc == NULL
+ bool CreateCompatible(wxDC* pDC);