主要是要重载三个鼠标事件
mainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QPushButton>
#include <QMouseEvent>
#include <QPoint>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
protected:
void mousePressEvent(QMouseEvent *e);
void mouseMoveEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
private:
Ui::MainWindow *ui;
QPushButton *btCloseBtn;
QPoint last;
};
#endif // MAINWINDOW_H
mainWindow.cpp
void MainWindow::mousePressEvent(QMouseEvent *e)
{
last = e->globalPos();
}
void MainWindow::mouseMoveEvent(QMouseEvent *e)
{
int dx = e->globalX() - last.x(); int dy = e->globalY() - last.y(); last = e->globalPos(); move(x() + dx, y() + dy); } void MainWindow::mouseReleaseEvent(QMouseEvent *e) { int dx = e->globalX() - last.x(); int dy = e->globalY() - last.y(); move(x() + dx, y() + dy); }