Qt5 添加右键菜单简单测试

1.在.h文件中包含相关头文件

#include <QMenu>
#include <QContextMenuEvent>

2.在.h文件中定义动作对象

QAction *edit
QAction *del;

3.在.h文件中声明私有方法

void contextMenuEvent(QContextMenuEvent *e);

4.在.h文件中增加右键点击后动作槽声明

private slots:
    void edit_line();
    void del_line();

5.在cpp文件的构建函数中实例化动作对象

edit    = new QAction(QIcon(":/icon/edit.png"), tr("编辑"), this);
connect(edit, SIGNAL(triggered()), this, SLOT(edit_line()));

del     = new QAction(QIcon(":/icon/delete.png"), tr("删除"), this);
connect(del, SIGNAL(triggered()), this, SLOT(del_line()));

6.在cpp文件中实现右键的事件

void MainWindow::contextMenuEvent(QContextMenuEvent *e)
{
    QMenu *menu = new QMenu();
    menu->setFixedWidth(120);
    menu->addAction(edit);
    menu->addAction(del);
    menu->exec(e->globalPos());
    delete menu;
}

最后在cpp文件中实现点击后的处理

void MainWindow::edit_line()
{
     //put your code
}
void MainWindow::del_line()
{
     //put your code
}