Qt – How to make a Qt widget ignore style sheets set on parent widgets

When adding a QComboBox control in Qt Designer, I get a terrible looking, non-native control:

On digging further, it turns out that two of the parent controls, QParentWindow and QStackedWidget, have style sheets that QComboBox is inheriting. If I delete the custom styles, then I get a native QComboBox like the one on the left.

How can I have QComboBox (and widgets generally) NOT inherit parent styles? Or, how can I create a style for, say, QParentWindow, and do it so that it's local only and does not cascade?

Best Answer

I don't think you can prevent it from cascading. But by using more specific selectors in your stylesheet, maybe you could define properties only for your QParentWindow class or specific object.

Related Solutions

C++ – Custom styles for custom widgets in Qt

The style sheet problem will not be solved, as it will not on custom classes.

The extra goodies added to a custom style will not be understood and taken care by already existing classes. This is because C++ is a static language and there is no (clean and sane) way to monkey-patch the run-time classes. A potential solution is to use a proxy style which wraps a certain instance of standard QStyle subclasses. Depending on how much you want to achieve with it, you can refer to two articles: Cross-platform code and styles and Look 'n' Feel Q & A.

If I were you, I would not go with the QStyle approach. Afterall, you create custom widgets (e.g. FooSomething) so you can as well add create completely different custom styles (e.g. FooStyle), it does not even need to mimic QStyle. Of course then you still need to replicate similar functionalities, e.g. to support style sheet.

Qt – How to make a QVector of widgets

here you go :)

#include <QWidget>
#include <QList>
#include <QLabel>
...
QList< QLabel* > list;
...

list << new QLabel( parent, "label 1" );
..
..

foreach( QLabel* label, list )  {
label->text();
label->setText( "my text" );
}

If you are trying just to get a simple example to work, its important that your widgets have a parent (for context / clean up) purposes.

Hope this helps.

Best Answer

Related Solutions

C++ – Custom styles for custom widgets in Qt

Qt – How to make a QVector of widgets

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