How to remove current model from ComboBox?



  • Hi. In some moment my app is needed to "clear" certain ComboBox from model i set previously. I can't rly find how to do this.

    In google some said use nullptr, it was first thought that i got myself, but every object(i assume) must have valid model.

    ui->comboBox_1T->setModel(nullptr);
    

    Which outputs in runtime this:

    QComboBox::setModel: cannot set a 0 model

    Second thing i found, is to set to empty model, which seems more logical.

    QAbstractItemModelPrivate::staticEmptyModel();

    But unfortunately there is no such property in such class(at least i don't have it).


  • Moderators

    @Engelard
    yes simply hold an empty model (like new QStringListModel). The few bytes of "wasted" memory is negligible.
    If you have multiple views/comboboxes you can use the same dummy model for all of them.


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