[SOLVED]QTreeWidget doesn't want to be edited

[grabalon]

Hey,

I'm using Qt Creator to develop my app, and have a dialog containing a QTreeWidget. I populate it by querying a local database for record names. I can give the code for populating it, but I'm pretty sure I don't set any properties of the TreeWidget from there. Suffice it to say that I have Parents and Children being populated.

I would like to allow my users to change parent names, but I can't get the Tree to accept a double click as an edit. Instead it treats double click as "Expand Children". I have the following call in the constructor of the dialog

ui.flightSearchTree->setEditTriggers(QAbstractItemView::DoubleClicked) ;

but to no avail.

Any help is appreciated.:confused::confused:

[norobro]

I'm pretty sure I don't set any properties of the TreeWidget from there.

That's what you need to do. By default a QTreeWidgetItem is not editable (docs) so you need to set the flag:

item->setFlags(item->flags() | Qt::ItemIsEditable);

item->setFlags(item->flags() | Qt::ItemIsEditable);

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[grabalon]

That did it, thanks.

As a followup, as best I can tell, the QTreeWidgetItem doesn't emit any signals, where would I connect to handle pushing the new name back into the database?

[Lykurg]

Cant you use a QTreeView with a proper model? That will simplify things a lot.

[grabalon]

That will simplify things a lot.

Perhaps, but the conversion process at this point is not simple.

[norobro]

where would I connect to handle pushing the new name back into the database?

Maybe in a custom delegate? By reimplementing setModelData() to update your DB.

[grabalon]

Posted for benefit of future readers:

QTreeWidget::itemChanged(QTreeWidgetItem*, int)
This signal solved my problems, but be sure to disconnect it if repopulating the QTreeWidget or you get some hyper signal emissions.