[Suggestion] Add Fusion style

[adem4ik]

Version: 1.29.0

1. Start TrayWeather from the command line using the following option:
   .\TrayWeather.exe -style fusion
   

Result: It seems like TrayWeather supports Fusion style out of the box, it just needs GUI setting.

[FelixdelasPozas]

Yes, the Qt library is compiled with the usual styles for Windows (i just looked, they are "Windows", "WindowsXP", "WindowsVista" & "Fusion"). But I certainly prefer Qt to try to use the style that is "closest" to the OS (I like the progress bars and the sliders, Fusion are more "Windows 7" sliders).

I could set the style in main.cpp like this:

59 QApplication app(argc, argv);
60 app.setQuitOnLastWindowClosed(false);
61 app.setStyle(QStyleFactory::create("WindowsXP")); // this one line.

Qt will always allow the user to set the style in the windows arguments, exactly as you described. I think it will confuse users if I put an option in the "Miscellaneous" tab about "GUI style", as they all are very similar.

It could be added as a third option in the "Visual Theme" option (the light UI/dark UI option in Miscellaneous tab) as the dark theme is a complete "reskin" of the widgets, more or less the same thing the "Fusion" theme does.

I'll test if it messes with the UI in some parts. Adding it as a third option costs next to nothing.

Regards,
Félix.