About Qt window background color

[mulfycrowh]

Hi there !

I have the following very short code :

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QDir::setCurrent(QCoreApplication::applicationDirPath());
QPalette p;
p.setColor(QPalette::Window, QColor(0xff, 0x00, 0x00));
app.setPalette(p);
MainWindow w;
w->show();
return app.exec();
}

The displayed window is white, not red ... Why ?

Thank you for your help

[mulfycrowh]

Sorry I forgot to put the code in gray color !