Attempted to fix splittree problem by not pushing event handler

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12794 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/scrolwin.h

@@ -62,7 +62,7 @@ public:
     // window (e.g. a child of it in order to scroll only a portion
     // the area between the scrollbars (spreadsheet: only cell area
     // will move).
-    virtual void SetTargetWindow( wxWindow *target );
+    virtual void SetTargetWindow( wxWindow *target, bool pushEventHandler = FALSE );
     virtual wxWindow *GetTargetWindow();
 
     // Number of pixels per user unit (0 or -1 for no scrollbar)