Peter Verswyvelen wrote:

When I start a windowed program (e.g. GLUT or GTK2Hs) from within GHCi, my application’s window does not become the foreground window.

Is this on purpose?

This is just a guess, I do not really know :-) Maybe your problem is focus stealing prevention, which is a feature of windows OS. .... well, provided that you have the problem on ms windows. Peter.