Question

If I call setStyleSheet on a widget (in this case a QToolButton) it no longer updates its font via font propagation from its parent. That is, once the style sheet is set, a call to setFont on some parent widget will no longer alter the font on this widget.

Is this some way to workaround this broken behaviour?

Note: my stylesheet has no font properties specified, thus according to the docs it shouldn’t interfere with the font. (For example: ":checked { border: 1px inset rgba(128,0,0,128); \nbackground-color: rgba( 200, 200, 0, 128 ); }")

Note: I’m also reasonably certain I’m setting the font correctly since all other controls in the application update correctly, only those which have a style-sheet set do not.

Answer 1

Even though the docu on setFont says

Note: If Qt Style Sheets are used on the same widget as setFont(), style sheets will take precedence if the settings conflict.

Which in this case should not play a role, internal qt docu in setFont function says

### Stylesheet has a different font propagation mechanism. When a stylesheet
is applied, fonts are not propagated anymore

So at the end of the day I would always set the parent font first and than apply stylesheets to children