0./目标:在Qcommbobox右键出来菜单,点击BCC校验,自动算出校验值填入编辑框;
![](https://img-blog.csdnimg.cn/20200409161944169.png)
1./UI界面选择Action editor,新建action
![](https://img-blog.csdnimg.cn/20200409162156781.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
记住对象名:actionBCC
![](https://img-blog.csdnimg.cn/20200409162247842.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
右键action,点击转到槽,选择triggered
![](https://img-blog.csdnimg.cn/20200409162407625.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
![](https://img-blog.csdnimg.cn/20200409162504707.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
点击BCC检验菜单标签时,会执行下面程序,可以添加自己的功能;
void frmTcpServer::on_actionBCC_triggered()
{
//再此添加你的代码
QMessageBox::warning(NULL, "warning", "BCC校验", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
}
主界面contextmenu policy属性选择:customContextMenuRequested
![](https://img-blog.csdnimg.cn/20200409163327795.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
UI界面右键选择,转到槽,选择customContextMenuRequested
![](https://img-blog.csdnimg.cn/20200409163448140.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
代码如下:点击右键时会响应如下代码
void MainWindow::on_MainWindow_customContextMenuRequested(const QPoint &pos)
{
Q_UNUSED(pos);
// QMenu *menuList; //自定义弹出式菜单
QMenu* menuList=new QMenu(this); //创建菜单
//添加Actions创建菜单项
menuList->addAction(ui->actionBCC);
menuList->exec(QCursor::pos()); //在鼠标光标位置显示右键快捷菜单
delete menuList; //手工创建的指针必须手工删除
}
完成的效果:
![](https://img-blog.csdnimg.cn/20200409163829630.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
![](https://img-blog.csdnimg.cn/2020040916384173.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMzNjkzMjU=,size_16,color_FFFFFF,t_70)
完整示例代码:https://www.lanzous.com/ib5opgb