Frank Thomas wrote:

> How can I make the main window of my application unresizeable? (so that the
> user can't drag it at any corner)

You are going to need to tell us which GUI toolkit you're using 
(assuming we're talking about a GUI application here ;)

For what it's worth, if you're using FXRuby, you do *not* want to pass 
in the DECOR_RESIZE option to the main window's new method. If you pass 
in the DECOR_ALL option (as most or all of the FXRuby example programs 
do), that includes DECOR_RESIZE.