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MyTableWidget::MyTableWidget(QWidget* parent) : QTableView(parent)
{
	setEditTriggers(QAbstractItemView::NoEditTriggers);
	setSelectionBehavior(QAbstractItemView::SelectRows);
	setSelectionMode(QAbstractItemView::ExtendedSelection);
//...
}

void MyTableWidget::contextMenuEvent(QContextMenuEvent* event)
{
	int n = selectionModel()->selectedRows().count();

	QMenu* menu = new QMenu(this);

	QAction* editRowAction = new QAction(tr("Edit Element"), menu);
//	connect(editRowAction, SIGNAL(triggered(bool)), this, SLOT(editElement()));
	menu->addAction(editRowAction);

	QAction* deleteRowAction = new QAction(tr("Remove Element(s)", "", n), menu);
//	connect(deleteRowAction, SIGNAL(triggered(bool)), this, SLOT(removeElement()));
	menu->addAction(deleteRowAction);

	menu->exec(event->globalPos());
	delete menu;
}