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update the screen before gaining access to wxWindowDC

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13845 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
2002-01-27 00:47:13 +00:00
parent 869dabf8c3
commit 350d006427
1 changed files with 5 additions and 0 deletions
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5
src/mgl/dcclient.cpp
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@@ -32,6 +32,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win) wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
{ {
MGLDevCtx *dc = win->GetPaintMGLDC(); MGLDevCtx *dc = win->GetPaintMGLDC();
if ( dc ) if ( dc )
{ {
m_inPaintHandler = TRUE; m_inPaintHandler = TRUE;
@@ -43,6 +44,10 @@ wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
{ {
m_inPaintHandler = FALSE; m_inPaintHandler = FALSE;
// VS: we have to update here so that screen's content is up-to-date
// and blitting from wxWindowDC works as expected
win->Update();
dc = new MGLDevCtx(MGL_wmBeginPaint(win->GetHandle())); dc = new MGLDevCtx(MGL_wmBeginPaint(win->GetHandle()));
MGLRegion clip; MGLRegion clip;