Qt ContextMenu

最新推荐文章于 2024-09-23 13:42:04 发布

原创最新推荐文章于 2024-09-23 13:42:04 发布 · 828 阅读

3 ·

CC 4.0 BY-SA版权

文章标签：

#qt

Qt 专栏收录该内容

39 篇文章

订阅专栏

本文介绍在Qt中如何为QTableWidget设置右键点击事件以显示自定义上下文菜单的方法。通过设置contextMenuPolicy属性并连接customContextMenuRequested信号，可以实现对表格控件的右键菜单功能。

QTableWidget中设置右键点击事件：

tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);
 connect(tableWidget,SIGNAL(customContextMenuRequested(QPoint)),this,SLOT(rightMouseClicked()));

contextMenuPolicy：
This property holds how the widget shows a context menu.
这个属性用来设置widget如何显示一个context menu

enum：

Constant                Value   Description
Qt::NoContextMenu          0    the widget does not feature a context menu, context menu    
                                handling is deferred to the widget's parent.
                                widget中没有出现context  menu，context menu的处理将会顺延
                                到parent。

Qt::PreventContextMenu     4    the widget does not feature a context menu, and in  
                                contrast to NoContextMenu, the handling is not deferred         
                                to the widget's parent. This means that all right mouse 
                                button  events are guaranteed to be delivered to the 
                                widget itself through QWidget::mousePressEvent(), and 
                                QWidget::mouseReleaseEvent().
                                部件没有出现context menu。与NoContextMenu相比，处理不会顺延
                                到parent。意味着所有的鼠标右击事件都将交给QWidget::mousePressEvent(), 
                                and QWidget::mouseReleaseEvent()处理

Qt::DefaultContextMenu    1     the widget's QWidget::contextMenuEvent() handler is
 called.
                                 (默认)ContextMenuEvent 请求处理相应


Qt::ActionsContextMenu    2     the widget displays its QWidget::actions() as context menu.
                                widget显示它的QWidget::actions()作为context menu
Qt::CustomContextMenu     3     the widget emits the QWidget::customContextMenuRequested() signal.
                                //widget发送QWidget::customContextMenuRequested()信号。