In QTreeView (and list view) signal when item is double clicked.

[paul23]

Hi there,

I have a qtreeview (with a model) - Now I wish to execute some code (a slot) when an item in the tree view is double clicked. How can I do this? I'd prefer not having to derive from this treeview - as I'd like keep using the qt designer to design the interface.... Is this possible?

[Zlatomir]

Double click signal

[paul23]

ok.... Strange I missed it ><

However how do I use this? I tried doing something like:

void MainInterface::DoubleClickInputTree(const QModelIndex& index) {
	QStandardItem * t = reinterpret_cast<QStandardItem *>(index.internalPointer());
	auto f(t->font());
	f.setBold(true);
	t->setFont(f);
}

void MainInterface::DoubleClickInputTree(const QModelIndex& index) {
	QStandardItem * t = reinterpret_cast<QStandardItem *>(index.internalPointer());
	auto f(t->font());
	f.setBold(true);
	t->setFont(f);
}

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So on double clicking an item it ought to be "bolded" - however this doesn't seem to work???? - How do I get the item corresponding to the qmodelindex?

EDIT:Nvm lol.. just after posting this I remembered reading "itemfromindex" somewhere so that helped me finding the correct function (auto t(model.itemFromIndex(index))

[Lykurg]

If you want an item based approach, then use QTreeWidget. There you can use QTreeWidget::itemDoubleClicked() which delivers the item directly to the slot.
If you are using a model, than you have to go via a custom delegate.