QT right mouse button pop-up menu options

Old rules, just start the steps

Step 1: Set the contextMenuPolicy property of the button on the UI interface and select CustomContextMenu to save

Step 2: Right-click the button to go to the slot, signal select customContextMenuRequested

Step 3: After turning to the slot, make the following code in the slot function

void MainWindow::on_pushButton_customContextMenuRequested(const QPoint &/*pos*/) // 注释掉pos
{
    
    
    QMenu *cmenu = new QMenu(ui->pushButton);

    QAction *action1 = new QAction(tr("删除"), this);
    action1->setData(1);
    cmenu->addAction(action1);
    // 下面这个on_menu_click(bool)槽函数做自己想做的事
    connect(action1, SIGNAL(triggered(bool)), this, SLOT(on_menu_click(bool))); 
    cmenu->exec(QCursor::pos());
}

Step 4: Add header file

#include <QMenu>

Step 5: Run to see the effect