Editable QComboBox with QItemDelegate

[Jmgr]

But why does

connect(comboBox->lineEdit(), SIGNAL(editingFinished()), this, SLOT(emitCommitData()));

connect(comboBox->lineEdit(), SIGNAL(editingFinished()), this, SLOT(emitCommitData()));

To copy to clipboard, switch view to plain text mode 

not save the data from the QLineEdit ?

I also noticed that setEditorData is called twice after an edition...

[wysota]

What is emitCommitData()? Is it a slot? The line edit is not the editor widget, but part of it, so your emitCommitData() doesn't make much sense.

[Jmgr]

Well, as I posted on the first post it's a slot which calls

emit commitData(qobject_cast<QWidget *>(sender()));

emit commitData(qobject_cast<QWidget *>(sender()));

To copy to clipboard, switch view to plain text mode 

EDIT : Yes, it's a slot

[wysota]

Yeah, but it doesn't make much sense, as the line edit is not the editor.

[Jmgr]

Huh, that is true

Ok, I will look how to use the event filter.

[Jmgr]

It is probably a noobish question, but how do I installEventFilter within createEditor, because since createEditor is const, calling myLineEdit->installEventFilter(this) produces an error...

I doesn't know why it is so complicated to put a simple QComboBox into a cell

Anyway, I tested with having persistent editors : it seems to work, but the method of showing an editor when needed is much better...

[wysota]

You have to cheat using const_cast(). You can take a look at the implementation of QItemDelegate and the factory class it uses to see how it is internally implemented. With all the event filters and stuff.

[Jmgr]

I will look at it, thanks

[faraslacks]

Excuse me, may be it's easy, but what is CustomRoles?

[wysota]

Excuse me, may be it's easy, but what is CustomRoles?

[WIKI=QAbstractItemModel#Custom_item_roles]Custom item roles in ItemViews[/WIKI]