Invalidate single cells in fnc grid

I am planning on using the FNC Grid in a three tier application and using it in virtual mode. My tests worked great. I was wondering if I can invalidate single cells to make the grid reload them from the underlying dataset if they are currently displayed. For performance reasons I dont want to refresh the complete displayed area.

Is there a way to accomplish this?



Since this concerns a cross-platform control where on platforms outside Windows the drawing is in most cases always done in its entirety, there is at this moment not a function to redraw partially.