Hi!
If you create a new Felgo Game in Qt Creator, like you maybe also did for your project, you should see this setting in the pro file:
win32 {
RC_FILE += win/app_icon.rc
}
Which sets the windows application icon to win/app_icon.rc, that declares win/app_icon.ico as the icon.
I’m not quite sure if the same works on the Surface Pro, but if you see the Felgo Icon for your application, this is where it comes from.
In General: Setting the application icon is not Felgo specific, but depends on how Qt handles this. You can also ask in the official Qt Forums how to set the the icon if the above setting does not work in your case. It is also possible to convert your project to a visual studio project with qmake, as described here. This should allow you to modify such app-settings directly with visual studio.
Best,
GĂĽnther