Now updating and clearing are done in a delayed fashion.

The m_updateRegion gets updated and the (often much
    smaller) m_clearRegion gets cleared. This removes the
    flicker introduced by having delayed updates and
    immediate clearings.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13994 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/window.h

@@ -183,6 +183,9 @@ public:
     GdkICAttr           *m_icattr;
 #endif
 
+    // The area to be cleared (and not just refreshed)
+    wxRegion             m_clearRegion;
+
     // scrolling stuff
     GtkAdjustment       *m_hAdjust,*m_vAdjust;
     float                m_oldHorizontalPos;