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Set the clear region to be the update region if the update

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region is non-empty but the clear region is empty, because
otherwise we're going to clear more than we repaint


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15872 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2002-06-18 08:29:34 +00:00
parent 03e0b2b1ff
commit eb411b9eea
2 changed files with 16 additions and 0 deletions
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8
src/gtk/window.cpp
View File

@@ -3454,6 +3454,14 @@ void wxWindowGTK::GtkSendPaintEvents()
else else
// if (!m_clearRegion.IsEmpty()) // always send an erase event // if (!m_clearRegion.IsEmpty()) // always send an erase event
{ {
// If the clear region is empty, and the update region isn't,
// then we're going to clear more than we repaint,
// so let's make sure the two regions are in sync.
if (m_clearRegion.IsEmpty() && !m_updateRegion.IsEmpty())
{
m_clearRegion = m_updateRegion ;
}
wxWindowDC dc( (wxWindow*)this ); wxWindowDC dc( (wxWindow*)this );
dc.SetClippingRegion( m_clearRegion ); dc.SetClippingRegion( m_clearRegion );

8
src/gtk1/window.cpp
View File

@@ -3454,6 +3454,14 @@ void wxWindowGTK::GtkSendPaintEvents()
else else
// if (!m_clearRegion.IsEmpty()) // always send an erase event // if (!m_clearRegion.IsEmpty()) // always send an erase event
{ {
// If the clear region is empty, and the update region isn't,
// then we're going to clear more than we repaint,
// so let's make sure the two regions are in sync.
if (m_clearRegion.IsEmpty() && !m_updateRegion.IsEmpty())
{
m_clearRegion = m_updateRegion ;
}
wxWindowDC dc( (wxWindow*)this ); wxWindowDC dc( (wxWindow*)this );
dc.SetClippingRegion( m_clearRegion ); dc.SetClippingRegion( m_clearRegion );