[Qt-interest] QApplication::setPalette loses some colors

[Schimkowitsch Robert]

I have an issue that setting the global application palette using
QApplication::setPalette does not work for all colors.

I prepare a QPalette with the colors I want to use in my application.

The I call the following:

    qDebug() << "Old Window color"
             << QApplication::palette().color(QPalette::Window);
    qDebug() << "New Window color"
             << pal.color(QPalette::Window);
    qDebug() << "Old AlternateBase color"
             << QApplication::palette().color(QPalette::AlternateBase);
    qDebug() << "New AlternateBase color"
             << pal.color(QPalette::AlternateBase);

    QApplication::setPalette(pal);

    qDebug() << "after setPalette"
             << QApplication::palette().color(QPalette::Window);
    qDebug() << "after setPalette"
             << QApplication::palette().color(QPalette::AlternateBase);

which outputs:

Old Window color QColor(ARGB 1, 0.831373, 0.815686, 0.784314) 
New Window color QColor(ARGB 1, 0.196078, 0.196078, 0.196078) 
Old AlternateBase color QColor(ARGB 1, 0.909087, 0.909087, 0.909087) 
New AlternateBase color QColor(ARGB 1, 0.392157, 0.392157, 0.392157) 
after setPalette QColor(ARGB 1, 0.196078, 0.196078, 0.196078) 
after setPalette QColor(ARGB 1, 0, 0, 0) 

As you can see, the "Window" color role is OK, whereas the AlternateBase
is now black, not the color I specified.

Why is that?

Kind regards

Robert Schimkowitsch

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