why I can't change the color of progressbar ?

[navid]

hello

why I can't change the color of progressbar ?

QPalette pal;
    QList<QProgressBar *> pblist = parent->findChildren<QProgressBar *>();
    if(!pblist.isEmpty()){
        foreach(QProgressBar* ouptr, pblist){
            pal = ouptr->palette();
            pal.setColor(QPalette::Highlight, Qt::red);
            ouptr->setPalette(pal);
            ouptr->setValue(50);
        }
    }

QPalette pal;
    QList<QProgressBar *> pblist = parent->findChildren<QProgressBar *>();
    if(!pblist.isEmpty()){
        foreach(QProgressBar* ouptr, pblist){
            pal = ouptr->palette();
            pal.setColor(QPalette::Highlight, Qt::red);
            ouptr->setPalette(pal);
            ouptr->setValue(50);
        }
    }

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[Lykurg]

Don't know. Your code works perfect on my computer (Linux). You can try style sheets. Why palette is not working on your side could be, that you overwrite it later again? Try a minimal example on your side:

#include <QtCore>
#include <QtGui>
 
int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QProgressBar pb;
    QPalette pal = pb.palette();
    pal.setColor(QPalette::Highlight, Qt::green);
    pb.setPalette(pal);
    pb.setValue(50);
    pb.show();
    return app.exec();
}

#include <QtCore>
#include <QtGui>

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QProgressBar pb;
    QPalette pal = pb.palette();
    pal.setColor(QPalette::Highlight, Qt::green);
    pb.setPalette(pal);
    pb.setValue(50);
    pb.show();
    return app.exec();
}

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[navid]

its default value is green. change Qt::green to Qt::red and test again.

I tested it on WinXP SP2

[Lykurg]

its default value is green. change Qt::green to Qt::red and test again.

I had tested it with different colours and it worked perfect.

I tested it on WinXP SP2

Did you test that minimal example or only in your application? Have you looked at the task tracker if someone posted that issue already?

[navid]

no,

I even used pb.repaint();
but, it is always green.

WinXP SP2, Qt4.6.2 (2010.02.1)

[aamer4yu]

I guess it has to do with XP style.
Try running your application with different style and see if it works. You simply need to pass "-style <styleName>" to your app.
eg : "app.exe -style motifstyle" [Check the style names for spelling]
Also stylesheets must work on XP. I had used once..

[wagmare]

Don't know. Your code works perfect on my computer (Linux). You can try style sheets. Why palette is not working on your side could be, that you overwrite it later again? Try a minimal example on your side:

#include <QtCore>
#include <QtGui>
 
int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QProgressBar pb;
    QPalette pal = pb.palette();
    pal.setColor(QPalette::Highlight, Qt::green);
    pb.setPalette(pal);
    pb.setValue(50);
    pb.show();
    return app.exec();
}

#include <QtCore>
#include <QtGui>

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QProgressBar pb;
    QPalette pal = pb.palette();
    pal.setColor(QPalette::Highlight, Qt::green);
    pb.setPalette(pal);
    pb.setValue(50);
    pb.show();
    return app.exec();
}

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for me also this code is not working ... i am running qt 4.6 with linux but after aamers suggestion of changing the style its working neatly ... color is changing properly ..

but still i am in dark ... what might be the problem ..

[navid]

yes

under motifstyle, it run accurately. where is the problem?