mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include<QMouseEvent>
#include<QPoint>
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT
    QPoint m_point;                         //鼠标坐标
    bool isok = false;                      //判断是否标签栏

public:   
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H