Styling only promoted widgets using QT Creator

I'm new to Qt and have been designing forms using Qt Creator. I've noticed that I can apply styles for specific widgets in the form's stylesheet, and it will style every widget on the form. For example "QPushButton{color: red;}" will make all the QPushButtons on the form have red text.

Is there a way to only apply styles to certain groups of widgets? For example, if I promote a QPushButton and call it MyButton, how can I set styles only for MyButtons. I would expect to be able to do something like "MyButton{color: 开发者_运维问答green;}" but that doesn't seem to work.

Is there a better way to do what I'm trying to do (preferably using Qt Creator)? I can't seem to find an example of this anywhere, but maybe it's because I'm not using the correct terminology.

Thanks, Mark

There are a lot of options for specifying selectors in style sheets. They are documented here.

One that I use (that is hinted to in the official style sheet reference document) is |=

QPushButton[objectName|="somePrefix_"]

I use this to select items that have the same object name prefix. You could of course achieve a similar thing by applying a stylesheet to a panel containing the buttons you want to style differently but this can get tricky.

IIRC that should work, but creator might not show the preview correctly as it is not instantiating your button. Personally I think working with a global .css file that gets loaded at startup works better than applying single styles on each element in creator.

Use QApplication::setStyleSheet() to set a global stylesheet