How to put QImage with gray background inside QIcon?

Question

I'm doing:

QIcon(QPixmap::fromImage(img));

and then putting it to QToolButton with setIcon and setIconSize

I need to have my img surrounded with gray color inside this icon - how can I implement this?

alike there:

Answer 1

Setting a Stylesheet should do the job for you..

int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        QToolButton b;
        b.setStyleSheet("QToolButton { background-color: grey }");  
        QImage img("C:\\Users\\Administrator\\Desktop\\Icon.png");
        b.setIcon( QPixmap::fromImage(img) );
        b.show();
        a.exec();
    }

Try this out. You can also play around with the QPalette of the button, that also provides you a very fine control over the way you want your widgets to look.