set bg style to custom as we overwrite it anyhow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30553 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/splitter.cpp

@@ -96,6 +96,10 @@ bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
 
     m_permitUnsplitAlways = (style & wxSP_PERMIT_UNSPLIT) != 0;
 
+    // don't erase the splitter background, it's pointless as we overwrite it
+    // anyhow
+    SetBackgroundStyle(wxBG_STYLE_CUSTOM);
+
     return true;
 }