+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
+
+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;
+
+ 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 )
+ {
+ GetMGLDC()->setDC(NULL);
+ MGL_wmEndPaint(m_wnd->GetHandle());
+ }
+}
+
+wxClientDC::wxClientDC(wxWindow *win) : wxWindowDC(win)
+{
+ wxRect r = m_wnd->GetClientRect();
+ m_globalClippingRegion.Intersect(r);
+ SetDeviceOrigin(r.x, r.y);
+}