多路h265监控录放开发-（1）建立head窗口并实现鼠标拖动整个窗口

头文件：

 //鼠标事件 用于拖动窗口//一下三个函数都是QWidget的可重载成员函数void mouseMoveEvent(QMouseEvent* ev) override;void mousePressEvent(QMouseEvent* ev) override;void mouseReleaseEvent(QMouseEvent* ev) override;

源文件：

/
/// 鼠标拖动窗口static bool mouse_press = false;
static QPoint mouse_point;//鼠标的坐标
void XViewer::mouseMoveEvent(QMouseEvent* ev)
{if (!mouse_press){QWidget::mouseMoveEvent(ev);return;}this->move(ev->globalPos() - mouse_point);//鼠标在移动的过程中执行}
void XViewer::mousePressEvent(QMouseEvent* ev)
{if (ev->button() == Qt::LeftButton)//左键按下的时候{mouse_press = true;//此时可移动mouse_point = ev->pos();}
}
void XViewer::mouseReleaseEvent(QMouseEvent* ev)
{mouse_press = false;
}

结果表明我们可以进行移动窗口了