qt模拟鼠标事件

1、模拟鼠标按下事件

        QPoint p = this->rect().center();
        QMouseEvent *pressEvent = new QMouseEvent(QEvent::MouseButtonPress,
                                                  p,
                                                  Qt::LeftButton,
                                                  Qt::LeftButton,
                                                  Qt::NoModifier);
        mousePressEvent(pressEvent);

2、模拟鼠标松开事件

QMouseEvent *releaseEvent = new QMouseEvent(QEvent::MouseButtonRelease,
                                                    p,
                                                    Qt::LeftButton,
                                                    Qt::LeftButton,
                                                    Qt::NoModifier);
mouseReleaseEvent(releaseEvent);

3、模拟鼠标点击事件

按顺序模拟1、2的事件，代码如下：

mousePressEvent(pressEvent);
mouseReleaseEvent(releaseEvent);

4、模拟鼠标移动事件

QMouseEvent *moveEvent = new QMouseEvent(QEvent::MouseMove,
                                         p,
                                         Qt::LeftButton,
                                         Qt::LeftButton,
                                         Qt::NoModifier);
mousePressEvent(pressEvent);
mouseReleaseEvent(releaseEvent);
mouseMoveEvent(moveEvent); //新增移动事件刷新画线和十字线