Avoid context menu in empty areas

Mark81

Qt 6.8.0, on my form I have a QTableView and a QAction.
I tried to show the action on the context menu with:

ui->table->setContextMenuPolicy(Qt::ActionsContextMenu);

but it shows nothing.
So I ended up to create the menu by myself:

QObject::connect(ui->table, &QTableView::customContextMenuRequested, this, [this]()
{
    QMenu *menu = new QMenu;
    menu->addAction(ui->actionRemove);
    menu->exec(QCursor::pos());
    menu->clear();
});

now it is shown but the problem is it appears also in empty area of the QTableView, example:

Instead I would like to show it only if the pointer is on a populated area.
That's because it's the way the user can delete a row. I'm aware the row is still selected even in my picture above but it is not user-friendly.

Instead, if the menu is shown only when the pointer is on a row it would be more intuitive for the user.

SGaist

Hi,

Check whether there's an item under the cursors and if not, don't show the menu.

Mark81

@SGaist I tried with:

QObject::connect(ui->table, &QTableView::customContextMenuRequested, this, [this]()
{
    qDebug() << ui->table->indexAt(QCursor::pos());
});

in order to understand if there is a valid item but it always returns:

QModelIndex(-1,-1,0x0,QObject(0x0))

even if I click on a cell.

Christian Ehrlicher

QCursor::pos() returns the global position, not the one relative to your widget. QTableView::customContextMenuRequested() gives you a QPoint which you should use: https://doc.qt.io/qt-6/qwidget.html#customContextMenuRequested

SGaist

Use the pos parameter of the signal to get the position of the cursor in the widget's coordinates.