mainwindow.py 文件源码

def drawBackgroundToPixmap(self):
        r = self.scene.sceneRect()
        self.background = QPixmap(qRound(r.width()), qRound(r.height()))
        self.background.fill(Qt.black)
        painter = QPainter(self.background)

        bg = QImage(self.imagesDir + '/demobg.png')
        painter.drawImage(0, 0, bg)