Good points. Particularly the Doubleclick one, since that's so often used in grids. Thanks.

>A true ReadOnly control (being abstract here :-) allows you to enter the control, maybe to select text and copy ect., just not modify the text. With When you can't do that. Say you need doubleclick code in the control, with a When returning .f., I'm not sure that would be possible. Just UI stuff like that.