Hi,

To add to @mrjj, the styles are free to ignore the palette or certain elements of the palette.

Please share any bug report you are opening so that other may find them more easily.

@Lays147

If only you want changed background color for QGraphicsScene, then:

scene()->setBackgroundBrush(palette().window());

Ok, I just realized that I was asking for QPalette::Window of the widget itself, not the application.
Nothing wrong with being stupid.

I understand you want to use the palettes but just as a note - you can also style a widget by name and that
way override the color.

QPushButton#TheWidgetName {
background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:1, stop:0 rgba(255, 255, 255, 0));
}

OK, I found a solution.
Two methods have to be called in reverse order.

QStyle *style = QStyleFactory::create(styleName); QApplication::setPalette(style->standardPalette()); QApplication::setStyle(style);

And now it works as desired.

Tomas

Did two thing.

Using recommended code below, compilation Error appear ->"The program has unexpectedly finished"
QImage myImage;
myImage.load(":/file/rightp.png");
myImage.scaled(1366,254, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);

How to scale stylesheet to 1/4 of mainwindow using below code

MainWindow w;
w.setStyleSheet("background-image:url(./file/left.png)");
w.show();