setFocus to the same but already running application !?

[hakermania]

The application on the constructor checks if the program is already running and then it outputs a QMessageBox and the the program exits. I would prefer to make it focus on the already running application of the same program!
How can I do this? I 've search a lot about setFocus but I wasn't able to find something!

[Timoteo]

You'll have to get your hands dirty with some platform-specific code. Since you already know the title(s) of your window(s), enumerating them and setting focus should be fairly straightforward.

Look here and here for something to get you started on Windows.