how to set an icon on a Main window and action with QT

Question

Honestly I do not understand resource files and how to get so that my things can get done, because it was partially explained to me and I\'m quite confused where to put icon

Answer 1

Wouldn't it be the simplest to use QtCreator's Designer window? In the lower right corner you can find 3 tabs - click on the most righthand one, then click on the pen:

This will open Resources editor:

Define new resources file (below the left pane), than add a "namespace" (rigth pane) and add your files. You can set aliases for them, so that when you decide to replace your icon with somethin else - you only have to switch the path, as long as alias is kept the same. You can then reference your resources via their alias to set your icon where needed, eg: setWindowIcon(QIcon(":/HurBudClientGUI/plug"));

Also - take your time to read this: http://doc.qt.io/qt-5/resources.html and that: http://doc.qt.io/qt-5/designer-resources.html

Good luck!