I have a Qt Windows app (developed in QtCreator) that I'd like to create a windows install CD. Does QtCreator have a feature that makes this possible? Or do I have to use NSIS ? Please help.
You can also check out the Qt Installer framework, this lets you make cross-platform installers.
Qt Creator doesn't do installers. NSIS or WiX are probably your best bets here.
For windows you can use one of these:
Prepare your installer and then burn in to CD. You can also add an autorun.inf file to make the installer start automagically :) Although i heard that microsoft is planing to disable the autorun feature due to security reasons.
If you're developing cross-platform versions then each linux distribution has it's own installation systems.
Debian,Ubuntu ... - *.deb Redhat,openSuse, .. - *.rpm