- wxMemoryDC(void);
- wxMemoryDC(wxDC* pDC); // Create compatible DC
-
- ~wxMemoryDC(void);
- virtual void SelectObject(const wxBitmap& rBitmap);
- virtual void DoGetSize( int* pWidth
- ,int* pHeight
- ) const;
-}; // end of CLASS wxMemoryDC
+ wxMemoryDCImpl( wxMemoryDC *owner );
+ wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap );
+ wxMemoryDCImpl( wxMemoryDC *owner, wxDC* pDC); // Create compatible DC
+
+ // override some base class virtuals
+ virtual void DoGetSize(int* pWidth, int* pHeight) const;
+ virtual void DoSelect(const wxBitmap& bitmap);
+
+ virtual wxBitmap DoGetAsBitmap(const wxRect* subrect) const
+ { return subrect == NULL ? GetSelectedBitmap() : GetSelectedBitmap().GetSubBitmap(*subrect);}
+
+protected:
+ // create DC compatible with the given one or screen if dc == NULL
+ bool CreateCompatible(wxDC* pDC);
+
+ // initialize the newly created DC
+ void Init(void);
+private:
+ DECLARE_CLASS(wxMemoryDCImpl)
+ wxDECLARE_NO_COPY_CLASS(wxMemoryDCImpl);
+}; // end of CLASS wxMemoryDCImpl