delayedencoding.py 文件源码

def createData(self, mimeType):
        if mimeType != 'image/png':
            return

        image = QImage(self.imageLabel.size(), QImage.Format_RGB32)
        painter = QPainter()
        painter.begin(image)
        self.imageLabel.renderer().render(painter)
        painter.end()

        data = QByteArray()
        buffer = QBuffer(data)
        buffer.open(QIODevice.WriteOnly)
        image.save(buffer, 'PNG')
        buffer.close()
        self.mimeData.setData('image/png', data)