Qt5 C++: Remove item from QListView's model and how to count items

Question

1. I'm trying to remove one of a few listed files from a QListView model. I'm using this code but it doesn't work:

ui->listView->model()->removeRow(ui->viewFiles->currentIndex().row());

Same thing is if I use:

model->removeRow(ui->viewFiles->currentIndex().row());

What's wrong with this code, and how do I delete an item from the list?

2. QFileSystemModel loads only files from the selected directory. How do I count all those items from QListView's model?

viewFiles = listView. I was just trying some commands found here on SO, but they weren't working and consequently I forgot to change names back. — user1257255, Jun 18 '13 at 23:13

score 1 · Accepted Answer · answered Jun 19 '13 at 02:16

1

removeRow(int row) should normally works. Make sure that ui->viewFiles->currentIndex().row() returns a valid row (i.e., between 0 and model->rowCount()-1). Notably, it is possible that your QModelIndex ui->viewFiles->currentIndex() is in an invalid state. You can check it via ui->viewFiles->currentIndex().isValid().
As said, you can check the number of rows of your model via model->rowCount()

answered Jun 19 '13 at 02:16

Boris Dalstein

I had to use QDir and QStringListModel, so this works well now. – user1257255 Jun 19 '13 at 18:21

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