In a ListView (c++) , how could I retrieve items count?

[MSDQuick]

Hi:
I would like to retrieve number of rows or items in my Listview . I need something like this :

qDebug() << QString::number ( ui->myListView->count );

But there is no "count" function in QListView .

Thanks for helping.
MSD.

[SGaist]

Hi,

Since you are using a QListView, this means that you have a custom model. Query that information from the model with rowCount.

[Joel Bodenmann]

The QListView doesn't have a count() function because it itself doesn't hold any items. That's the job of the model. Hence you have to ask the model for the item count. In case of a list this is simply a matter of calling QAbstractItemModel::rowCount().

Edit: Seems like @SGaist was a couple of seconds faster ;)

[Vladislav Lisovenko]

@MSDQuick Guys are right about model, but you can also try this code:

list.children().count()

[Joel Bodenmann]

I am not an expert but I am pretty sure that that's wrong. The children() method is actually QWidget::children(). That will return a list of children of that widget - not a list of items that the list widget holds.

[Vladislav Lisovenko]

@Joel-Bodenmann It seems you are right and I haven't understood documentation, sorry.

[VRonin]

You can use ui->myListView->model()->rowCount()

[MSDQuick]

Thanks everyone :

ui->myListView->model()->rowCount()

works fine.

[Joel Bodenmann]

Just make sure - as always - that you check the pointer returned from QListView::model() before accessing it to avoid nasty crashes.

[MSDQuick]

@Joel-Bodenmann
Thank you Joel.