- DECLARE_DYNAMIC_CLASS(wxMemoryDC)
-
- public:
- wxMemoryDC(void);
- wxMemoryDC( wxDC *dc ); // Create compatible DC
- ~wxMemoryDC(void);
- virtual void SelectObject( const wxBitmap& bitmap );
- void GetSize( int *width, int *height ) const;
-
- private:
- friend wxPaintDC;
- wxBitmap m_selected;
-};
+public:
+ 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