How to set application icon in a Qt-based project?

Question

How do you set application icon for application made using Qt? Is there some easy way? It\'s a qmake-based project.

Answer 1

Verified in Linux (Qt 4.8.6) and Windows (Qt 5.6):

1) Add the icon file to your project folder;

2) In the main function call setWindowIcon() method. For example:

QApplication a(argc, argv);
a.setWindowIcon(QIcon("./images/icon.png"));