16.QT鼠标

头文件

1 #include <QMouseEvent>
2 #include <QStatusBar>
3 #include <QLabel>

1 protected:
2     //鼠标按下
3     void mousePressEvent(QMouseEvent *e);
4     //鼠标移动
5     void mouseMoveEvent(QMouseEvent *e);
6     //鼠标释放
7     void mouseReleaseEvent(QMouseEvent *e);
8     //鼠标双击
9     void mouseDoubleClickEvent(QMouseEvent *e);

mainwindow.cpp

 1 //点击
 2 void MainWindow::mousePressEvent(QMouseEvent *e)
 3 {
 4     if(e->button()==Qt::LeftButton)
 5     {
 6         this->setWindowTitle("left press");
 7     }
 8     else if(e->button()==Qt::RightButton)
 9     {
10         this->setWindowTitle("right press");
11     }
12     else if(e->button()==Qt::MidButton)
13     {
14         this->setWindowTitle("mid press");
15     }
16 }
17 
18 //移动
19 void MainWindow::mouseMoveEvent(QMouseEvent *e)
20 {
21     this->setWindowTitle(QString::number(e->x()) + "," + QString::number(e->y()) );
22 }
23 
24 void MainWindow::mouseReleaseEvent(QMouseEvent *e)
25 {
26      this->setWindowTitle("Release " + QString::number(e->x()) + "," + QString::number(e->y()) );
27 }
28 
29 void MainWindow::mouseDoubleClickEvent(QMouseEvent *e)
30 {
31     this->setWindowTitle("double click " + QString::number(e->x()) + "," + QString::number(e->y()) );
32 }