From: Stefan Csomor <csomor@advancedconcepts.ch>
Date: Tue, 20 Apr 2010 05:01:39 +0000 (+0000)
Subject: if we have wxBG_STYLE_PAINT, we must clear the background ourselves, since on OSX... 
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/4766d85b113811f4d5534aceb5ba87478e981e04?ds=sidebyside

if we have wxBG_STYLE_PAINT, we must clear the background ourselves, since on OSX there might be transparent subpanels, fixes #11958

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/src/generic/splitter.cpp b/src/generic/splitter.cpp
index e358c875de..f1ba90db39 100644
--- a/src/generic/splitter.cpp
+++ b/src/generic/splitter.cpp
@@ -194,6 +194,12 @@ void wxSplitterWindow::SetResizeCursor()
 void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dc(this);
+#ifdef __WXOSX__
+    // as subpanels might have a transparent background we must erase the background
+    // at least on OSX, otherwise traces of the sash will remain 
+    // test with: splitter sample->replace right window
+    dc.Clear();
+#endif
 
     DrawSash(dc);
 }