Qt 获取三种坐标类型

 1 void MainWindow::mouseMoveEvent(QMouseEvent *event) {
 2 
 3     //获得相对于屏幕的坐标
 4     QPoint sPoint1 = event->globalPos();
 5     qDebug() << "相对于屏幕坐标1:" << "(" << sPoint1.rx() << "," << sPoint1.ry() << ")";
 6     
 7     //获得相对于屏幕的坐标
 8     QPoint sPoint2 = QCursor::pos();
 9     qDebug() << "相对于屏幕坐标2:" << "(" << sPoint2.rx() << "," << sPoint2.ry() << ")";
10     
11     //获得相对于窗口的坐标
12     QPoint windowPoint = this->mapFromGlobal(sPoint2);
13     qDebug() << "相对于窗口坐标:" << "(" << windowPoint.rx() << "," << windowPoint.ry() << ")";
14     
15     //获得相对于控件的坐标
16     QPoint widgetPoint = ui->label->mapFromGlobal(sPoint1);
17     qDebug() << "相对于控件坐标:" << "(" << widgetPoint.rx() << "," << widgetPoint.ry() << ")";
18 }