RE: You have to find a way to avoid that unnecessary rebuild of your layout after user interaction in your dialog.
I'm not really sure how to do that. Since I just butchered the code from a sample plug-in.
That will probably a problem for another thread.
Anyway, it's functional at the moment. I'll settle for this.
Thanks again and sorry for the trouble.
Will close the thread now.
Have a great day ahead!