AppWindowHold ?

Hi guys.
I've got a problem. There are some commands in polled input for the window (AppSuspended and AppTerminate).
I need a command which gives me a signal when the user holds the window with the mouse. Any idea?
Mfg Suco

http://www.blitzbasic.com/Community/posts.php?topic=58690#654169
http://www.blitzbasic.com/Community/posts.php?topic=56194#624955

@Perturbatio:
Thanks for the links. These solutions aren't as comfortable as I hoped.
Any other ideas?
Mfg