鼠标响应事件

 1 #ifndef MAINWINDOW_H
 2 #define MAINWINDOW_H
 3 
 4 #include <QMainWindow>
 5 #include <QMouseEvent>
 6 #include <QWheelEvent>
 7 
 8 class MainWindow : public QMainWindow
 9 {
10     Q_OBJECT
11     
12 public:
13     MainWindow(QWidget *parent = 0);
14     ~MainWindow();
15 
16 protected:
17     void mousePressEvent(QMouseEvent *event);//点击
18     //void mouseMoveEvent(QMouseEvent *event);//移动
19     //void mouseReleaseEvent(QMouseEvent *event);//释放
20     //void mouseDoubleClickEvent(QMouseEvent *event);//双击
21     //void wheelEvent(QWheelEvent *event);//滚动
22 
23 private:
24     QPoint offset;//存储鼠标位置与窗口位置的差值
25     QCursor cursor;//创建光标，保存光标的默认形状
26 };
27 
28 #endif // MAINWINDOW_H
29 
30 //鼠标触发事件

 1 #include "mainwindow.h"
 2 #include <QMouseEvent>
 3 #include <QDebug>
 4 
 5 MainWindow::MainWindow(QWidget *parent)
 6     : QMainWindow(parent)
 7 {
 8     //mousePressEvent(QMouseEvent *event);
 9     //mouseDoubleClickEvent();
10     //mouseMoveEvent();
11     //mouseReleaseEvent();
12     //wheelEvent();
13 }
14 
15 MainWindow::~MainWindow()
16 {
17     
18 }
19 //左右键点击事件，打印消息
20 void MainWindow::mousePressEvent(QMouseEvent *event)
21 {
22     if(event->buttons()==Qt::LeftButton)
23     {
24         //cursor = new QCursor;
25         qDebug()<<"LeftButton clicked!";
26     }
27     else if(event->button()==Qt::RightButton)
28         qDebug()<<"RightButton clicked!";
29 }
30 /*void MainWindow::mouseMoveEvent(QMouseEvent *event)
31 {
32 
33 }
34 void MainWindow::mouseDoubleClickEvent(QMouseEvent *event)
35 {
36     if(event->button()==)
37 }*/