Setting On Off QIcons in Designer doesn't work

[InTheBeninging]

So I want a PushButton to show distinct QIcons depending on the Checkstate.

When I preview my Widgets UI it does work, but when i build and open the whole application the buttons icon wont change as intended and stays the same, although you can clearly see the QPushButton changing its state. Where am I wrong, is this a bug? Using QtCreator 14.0.1 and Qt 5.15 MSVC 2019 64Bit. Already tried deleting the build folder for a clean rebuild.

[Christian Ehrlicher]

What style do you use in your application?

[InTheBeninging]

This post is deleted!

[InTheBeninging]

@Christian-Ehrlicher

    // Set the dark style
    a.setStyle(QStyleFactory::create("Fusion"));

[Christian Ehrlicher]

Try with 'windows' style to see if it makes a difference.

[InTheBeninging]

@Christian-Ehrlicher It works with Windows style and with no style specified/default.How do i get it to work with fusion?

[Christian Ehrlicher]

@InTheBeninging said in Setting On Off QIcons in Designer doesn't work:

How do i get it to work with fusion?

Fix the fusion style.