Translucent the toolbar in the uppler level of QWidget::winId() - how?

[Jason]

WHats the background of the main window ? try setting background of mainwindow to transparent.
And is toolbar shown above label, or the main window ?

Hi aamer4yu:
Thanks, the toolbar is shown above label. I using each of the following functions to transparent the mainwindow background, but it still doesn't work.

this->setStyleSheet(QString::fromUtf8 ("background-color:transparent;"));
this->setWindowOpacity(0.0);
this->setBackgroundRole(QPalette::Window);
this->setAttribute(Qt::WA_NoBackground);

this->setStyleSheet(QString::fromUtf8 ("background-color:transparent;"));
this->setWindowOpacity(0.0);
this->setBackgroundRole(QPalette::Window);
this->setAttribute(Qt::WA_NoBackground);

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