I'm trying to find out if a TVirtualStringTree Node is actually being rendered, or outside of the visible tree area altogether.
Obviously, this is something entirely different than .Visible.
Why do i need this: My AfterCellPaint paints various components on top of the cells. I check the visibility of the Node cells' TRects against the components' positions. That's all fine, except for the case when the tree gets scrolled by a large amount at once. For example, when I click into the non-slider part of the scrollbar, it will jump. The AfterCellPaint that adjusts the visibility will not get called, therefor the components visibility is not adjusted. I'm looking for a bullet-proof method to adjust the components' visibility.