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//GraphView.h
//Объявление переменных
class GraphView : public QWidget
{
    Q_OBJECT
 
    QAction* m_RemarkAction;
    QMenu tailContextMenu;          
...
}
 
//GraphView.cpp
//Обработчик щелчка по пункту меню
void GraphView::setRemark()
{
    m_beep->play();
    QMessageBox::information(this, "REMARK", "REMARK CONNECT!");
}
 
//добавление пункта меню и установка соединения
//GraphView.cpp
GraphView::GraphView()
{
    m_RemarkAction = tailContextMenu.addAction("Add/Edit Remark");
    if(connect(m_RemarkAction, SIGNAL(triggered()), this, SLOT(setRemark()))) {QMessageBox::information(this, "REMARK", "CONN OK!");} else {QMessageBox::information(this, "REMARK", "CONN BAD!");};
 
...
}
 
//Показ меню в
//GraphView.cpp
void GraphView::paintEvent(QPaintEvent *event)
{
if (QApplication::mouseButtons()==Qt::RightButton) {tailContextMenu.exec(QCursor::pos());} 
...
}

triggered (bool)

triggered ()

connect(m_RemarkAction, SIGNAL(triggered(QAction *)), this, SLOT(setRemark(QAction *)))

connect(sender, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed(Qbject*)));
connect(sender, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed()));
connect(sender, SIGNAL(destroyed()), this, SLOT(objectDestroyed()));

connect(sender, SIGNAL(destroyed()), this, SLOT(objectDestroyed(QObject*)));

public slots:
	void setRemark(); //{ QMessageBox::information(this, "REMARK", "REMARK CONNECT!"); };