Styling the QMdiArea using the the fusion style and QPalette (dark theme)

[Gbhutra]

Hello, I am fairly new to Qt, please bear with me if my question sound dumb.

I've been playing around with the MdiExample from the MainWindow I changed the main function of the example to the following

int main(int argc, char *argv[])
{
    Q_INIT_RESOURCE(mdi);

    QApplication app(argc, argv);
    QApplication::setStyle(QStyleFactory::create("Fusion"));
    QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);

    QCoreApplication::setApplicationName("MDI Example");
    QCoreApplication::setOrganizationName("QtProject");
    QCoreApplication::setApplicationVersion(QT_VERSION_STR);

    QPalette darkPalette;
    darkPalette.setColor(QPalette::Window, QColor(53, 53, 53));
    darkPalette.setColor(QPalette::WindowText, Qt::white);
    darkPalette.setColor(QPalette::Disabled, QPalette::WindowText, QColor(255, 127, 127));
    darkPalette.setColor(QPalette::Text, QColor(86, 86, 86));
    darkPalette.setColor(QPalette::Disabled, QPalette::Text, QColor(127, 127, 127));
    darkPalette.setColor(QPalette::Dark, QColor(35, 35, 35));
    darkPalette.setColor(QPalette::Shadow, QColor(20, 20, 20));
    darkPalette.setColor(QPalette::Button, QColor(53, 53, 53));
    darkPalette.setColor(QPalette::ButtonText, Qt::white);
    darkPalette.setColor(QPalette::Disabled, QPalette::ButtonText, QColor(127, 127, 127));
    darkPalette.setColor(QPalette::BrightText, Qt::red);
    darkPalette.setColor(QPalette::Link, QColor(42, 130, 218));
    darkPalette.setColor(QPalette::Highlight, QColor(86, 86, 86));
    darkPalette.setColor(QPalette::Disabled, QPalette::Highlight, QColor(80, 80, 80));
    darkPalette.setColor(QPalette::HighlightedText, Qt::black);
    darkPalette.setColor(QPalette::Disabled, QPalette::HighlightedText, QColor(127, 127, 127));
    app.setPalette(darkPalette);

    QCommandLineParser parser;
    parser.setApplicationDescription("Qt MDI Example");
    parser.addHelpOption();
    parser.addVersionOption();
    parser.addPositionalArgument("file", "The file to open.");
    parser.process(app);

    MainWindow mainWin;
    foreach (const QString &fileName, parser.positionalArguments())
        mainWin.openFile(fileName);
    mainWin.show();
    return app.exec();
}

It seems to work fairly well with the few problems:

1. There seems to be a white line on the left edge of the SubWindow (picture attached) . The only way to I could get rid of that was setting the styleSheet and setting the border of to 0px

setStyleSheet("QMdiSubWindow { border: 0px solid #ffffff; }");

That for rid of the border altogether and the subWindow cannot be resized! So my question is how can I get rid of that line keeping the border or remove the border and add a QSizeGrip ?
2. The disabled button is showing a weird highlighted text which I am not able to change (picture attached). How do I fix that?

Thanks in advance

[Gojir4]

@Gbhutra said in Styling the QMdiArea using the the fusion style and QPalette (dark theme):

2. The disabled button is showing a weird highlighted text which I am not able to change (picture attached). How do I fix that?

Didn't try, but I guess you need to set the color for shadow in disabled state:

 darkPalette.setColor(QPalette::Disabled, QPalette::Shadow, QColor(r, g, b));

[Gbhutra]

@Gojir4 said in Styling the QMdiArea using the the fusion style and QPalette (dark theme):

darkPalette.setColor(QPalette::Disabled, QPalette::Shadow, QColor(r, g, b));

(Edited)
tried, but it didn't work. I suspect that underneath it's a QLabel with a raised text but I don't know how to set the color of those using QPalette