off_pixmap = QPixmap(width(), height());
QPainter off_painter(&off_pixmap);
off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
off_pixmap = QPixmap(width(), height());
QPainter off_painter(&off_pixmap);
off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());