Replace wxDeprecatedGUIConstants enum values

src/generic/splitter.cpp

@@ -101,7 +101,7 @@ bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
 #if !defined(__WXGTK__) || defined(__WXGTK20__)
     // don't erase the splitter background, it's pointless as we overwrite it
     // anyhow
-    SetBackgroundStyle(wxBG_STYLE_CUSTOM);
+    SetBackgroundStyle(wxBG_STYLE_PAINT);
 #endif
 
     return true;