STC and Motif patch

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15974 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/motif/scrolbar.h

@@ -49,6 +49,7 @@ public:
     inline int GetThumbSize() const { return m_pageSize; }
     inline int GetPageSize() const { return m_viewSize; }
     inline int GetRange() const { return m_objectSize; }
+    inline bool IsVertical() const { return FALSE; }
 
     virtual void SetThumbPosition(int viewStart);
     virtual void SetScrollbar(int position, int thumbSize, int range, int pageSize,