Qt - QPushButton图标边距需要保持不变

I create a set of buttons using the function below with text, buttonName, that can change in width. The icon that appears when I click one of the buttons then justfies itself based on the width of the text; how do I make the icon stay the same margin from the right of the button regardless of text? Don't say custom delegate, because I haven't been able to figure out how to implement that!I create a set of buttons using the function be