windows-style program with buttons etc....

I'm thinking about maybe making a windows-style application with windows, buttons, etc. How would I code a 'button' eg. when the user clicks on it and only on it something happens...?

I presume you're using B3D

Easy way: get B+

Slightly harder way, use one of the many GUI libraries for Blitz (XInt being one of them)

Hardest way, create your own GUI.

Yes, im using Blitz, but it doesn't matter cos i just downloaded BCF and it has all the functions I will ever need!
;]

Yes BCF is excellent. We use it in our game for all the menu dialog stuff and our editor...

Check the link below.

If you have BlitzPlus off cource you can have standart Window GUI style..