Just posted corrections to the samples I posted earlier today.
Found I was sublassing dialog, not control, plus some other bad
code. Code is now corrected, so in case you have grabbed the
previous ones, trow them away and use the current ones instead.

Terribly sorry for this. I'm writing this message from the corner
of my studio, where I will stay until I have written "Check you code
better before you post it, stupid" a thousand times on my laptop..