update the screen before gaining access to wxWindowDC

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

View File

@ -32,6 +32,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
{
MGLDevCtx *dc = win->GetPaintMGLDC();
if ( dc )
{
m_inPaintHandler = TRUE;
@ -42,6 +43,10 @@ wxWindowDC::wxWindowDC(wxWindow *win) : m_wnd(win)
else
{
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()));