function GetImageVisibility(idx: Integer): Integer;
Description
Returns 0 if image, idx, is not visible, 1 if it's partially visible, or 2 if it's fully visible (i.e. not scrolled out of view).
Note: ◼The result may not be valid if the control is not visible. Call Update() prior to IsVisible if you need to calculate for a non-visible control. ◼Result will always be 0 for images that are filtered