qt 4.5 windows. Update window when something doing.

Good day.
i have Qt 4.5 on Windows XP.
for example, i copy many files in a loop, and my window hangs, its didnt repaint.
if i put repaint() in loop, it'll be ok. But when i move window it will hangs again and didnt repaint.
what should i do or what i doing wrong?:)
thnx.

do copying process in a seperate event loop ..
use QThread http://doc.trolltech.com/4.5/qthread.html

Or may be simply you can call qApp->processEvents in between your loop :)

http://doc.trolltech.com/qq/qq27-responsive-guis.html

thanks all! works great)