wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
{
MGLDevCtx *dc = win->GetPaintMGLDC();
+
if ( dc )
{
m_inPaintHandler = TRUE;
+
+ m_globalClippingRegion = win->GetUpdateRegion();
SetMGLDC(dc, FALSE);
}
else
{
m_inPaintHandler = FALSE;
- SetMGLDC(new MGLDevCtx(MGL_wmBeginPaint(m_wnd->GetHandle())), TRUE);
+
+ dc = new MGLDevCtx(MGL_wmBeginPaint(win->GetHandle()));
+
+ MGLRegion clip;
+ dc->getClipRegion(clip);
+ m_globalClippingRegion = wxRegion(clip);
+ SetMGLDC(dc, TRUE);
// TRUE means that dtor will delete MGLDevCtx object
// but it won't destroy MGLDC returned by MGL_wmBeginPaint because
// ~MGLDevCtx() doesn't call destroy()
wxWindowDC::~wxWindowDC()
{
- if ( m_inPaintHandler )
- {
- // This is neccessary so that subsequently created wxPaintDCs won't get
- // confused about clipping. Another reason is that the same MGL dc is reused
- // for wxEraseEvent, wxNcPaintEvent and wxPaintEvent
- DestroyClippingRegion();
- }
- else
+ if ( !m_inPaintHandler )
{
GetMGLDC()->setDC(NULL);
MGL_wmEndPaint(m_wnd->GetHandle());
wxClientDC::wxClientDC(wxWindow *win) : wxWindowDC(win)
{
wxRect r = m_wnd->GetClientRect();
- SetClippingRegion(r);
+ m_globalClippingRegion.Intersect(r);
SetDeviceOrigin(r.x, r.y);
}