How to cancel pending signals?

[dictoon]

Thanks for your answer anda_skoa, but I'm not sure I fully understand.

Right now, I create a context menu (QMenu) with the QTreeWidget as parent, then add an action to that menu that will delete the selected item(s):

QMenu* menu = new QMenu(treeWidget());
...
menu->addAction("Delete", this, SLOT(slot_delete()), QKeySequence(Qt::Key_Delete));
...
menu->exec(treeWidget()->mapToGlobal(point));

QMenu* menu = new QMenu(treeWidget());
...
menu->addAction("Delete", this, SLOT(slot_delete()), QKeySequence(Qt::Key_Delete));
...
menu->exec(treeWidget()->mapToGlobal(point));

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And here is a slot_delete():

void MyItem::slot_delete()
{
    // Do a bunch of stuff here, might take some time.
 
    delete this;
}

void MyItem::slot_delete()
{
    // Do a bunch of stuff here, might take some time.

    delete this;
}

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How would I change this?

I'm not sure how first hiding or taking out the item in slot_delete() would fix the problem.