- // this is more efficient and hence default
- wxBUFFER_DC_OVERWRITE_BG = 0,
+private:
+ wxDC *m_dc;
+ wxBitmap m_buffer;
+
+public:
+
+ wxBufferedDC() : m_dc( 0 ) {}
+
+ wxBufferedDC( wxDC *dc, const wxBitmap &buffer )
+ : m_dc( dc ), m_buffer( buffer )
+ {
+ SelectObject( m_buffer );
+ }
+
+ wxBufferedDC( wxDC *dc, const wxSize &area )
+ : m_dc( dc ), m_buffer( area.GetWidth(), area.GetHeight() )
+ {
+ SelectObject( m_buffer );
+ }
+
+ ~wxBufferedDC() {
+ if( m_dc != 0 )
+ UnMask();
+ }
+
+
+ void Init( wxDC *dc, const wxBitmap &buffer ) {
+ wxASSERT_MSG( m_dc == 0 && m_buffer == wxNullBitmap,
+ _T("wxBufferedDC already initialised") );
+ m_dc = dc;
+ m_buffer = buffer;
+ SelectObject( m_buffer );
+ }
+
+ void Init( wxDC *dc, const wxSize &area ) {
+ wxASSERT_MSG( m_dc == 0 && m_buffer == wxNullBitmap,
+ _T("wxBufferedDC already initialised") );
+ m_dc = dc;
+ m_buffer = wxBitmap( area.GetWidth(), area.GetHeight() );
+ SelectObject( m_buffer );
+ }