Thanks for your help. I am using a TImageEnMView and it seems to have a problem focusing sometimes. There is a third state between a thumbnail being selected and not selected. Two thumbnails are highlighed, one with the usual double line and the other just partially selected with one a one line border. Problem is intermittent. Any help would be appreciated.
Thanks for getting back to me so promptly Nigel. My app has a ImageEnMView with thumbnails getting video refreshed 15 times a second. I have only one camera working so i have several blank thumbnails (black) and the one good thumbnail connected to a camera. Click into the "active" thumbnail and you sometimes have a problem maybe one out of 20 times. The new active thumbnail gets the focus and a red selection rectangle of thickness 1. The thumbnail you are leaving still has the red section rectangle with a thickness of 2;
I changed the selection critereon EnableMultiSelect and got the same problem. What more can I change.