// does not prepare the window DC
#define wxBUFFER_CLIENT_AREA 0x02
+// Set when not using specific buffer bitmap. Note that this
+// is private style and not returned by GetStyle.
+#define wxBUFFER_USES_SHARED_BUFFER 0x04
+
class WXDLLEXPORT wxBufferedDC : public wxMemoryDC
{
public:
// Usually called in the dtor or by the dtor of derived classes if the
// BufferedDC must blit before the derived class (which may own the dc it's
// blitting to) is destroyed.
- void UnMask()
- {
- wxCHECK_RET( m_dc, _T("no underlying wxDC?") );
- wxASSERT_MSG( m_buffer && m_buffer->IsOk(), _T("invalid backing store") );
-
- wxCoord x = 0,
- y = 0;
-
- if ( m_style & wxBUFFER_CLIENT_AREA )
- GetDeviceOrigin(&x, &y);
-
- m_dc->Blit(0, 0, m_buffer->GetWidth(), m_buffer->GetHeight(),
- this, -x, -y );
- m_dc = NULL;
- }
+ void UnMask();
// Set and get the style
void SetStyle(int style) { m_style = style; }
- int GetStyle() const { return m_style; }
+ int GetStyle() const { return m_style & ~wxBUFFER_USES_SHARED_BUFFER; }
private:
// common part of Init()s