Originally Posted by paul.sijpkes
I'll keep experimenting with this problem, as it is an interesting problem, let me know how you go on your solution.
Thanks again for your suggestions. I have a slightly inelegant work around at the moment, in that I simply surrounded the List with 3 transparent canvasses for hiding it, plus I put a canvas _behind_ it for showing it again. This works fine, but adds to the size of an on already large application.
I vaguely remember reading something about using some kind of special disabling mouse click action on an overlayed canvas, which forced it to pass the mouse click on to things underneath it. But I haven't been able to reproduce this, and perhaps I remember incorrectly