* Instead of invoking _DrawLines out of the app-server drawing context,

we request the drawing via Invalidate() - this make use of the app-server's
  potential double buffering, whenever that is active. This change reduces 
  flickering in VESA mode considerably.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29962 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os/interface/TextView.h

@@ -324,6 +324,10 @@ private:
 
 			void				_DrawLines(int32 startLine, int32 endLine,
 									int32 startOffset = -1, bool erase = false);
+			void				_RequestDrawLines(int32 startLine, 
+									int32 endLine, int32 startOffset = -1, 
+									bool erase = false);
+			
 			void				_DrawCaret(int32 offset);
 			void				_ShowCaret();
 			void				_HideCaret();