How to create the set up file after completing the application???

How to create the setup file after the application is built??? pls help me to create the single set up file..

You need to use an installation tool such as Innosetup.

I like http://www.installjammer.com/.
But if you google you will find many more.

Nullsoft Installer is also ok.

You haven't mentioned for which platform you are developing, but you seem to be developing for various platforms. Personally, I would ditch QMake and use CMake/CPack insteak. CPack takes care of the packaging for you. It may take you some time to get up and running, but once you are then it's a breeze.

@Squidge::::Excellent Answer.. Thank you very much

Hi,

I'm not really sure, what you're looking for. But if you want your application to have a nice installer, so that the average user can install it under windows, you could have a look hat NSIS:
http://nsis.sourceforge.net/

But there are plenty of other possibilities ...

Hope that helps, Rainer