Combobox entries filter as I type

[yazwas]

Hello everyone

I have a large data-set that I populate to a combo box, what I would like to do, is to filter the results of that set as I type, so if i type something like Hello, all the entries that contains the word "hello", would only appear in the combo box

How to do this thing with combo-box and is using a combo box the best method to implement this? or if you think some other method is more appropriate, I would love to hear about it!

any suggestions are most welcomed!

thanks for your help!

[Lykurg]

You could use a normal QLineEdit with a QCompleter.

[yazwas]

Thanks Lykurg

but I also want the user to be able to see all the entries, is that possible with the QLineEdit?

thanks

[numbat]

You can use a QSortFilterProxyModel Something like:

QStringListModel * model = new QStringListModel;
 
    for (int x = 0; x < 1000; x++)
    {
        model->insertRow(model->rowCount());
        model->setData(model->index(model->rowCount() - 1, 0), QString("hello%1").arg(x), Qt::DisplayRole);
    }
 
    QComboBox * cb = new QComboBox;
 
    QSortFilterProxyModel * proxy = new QSortFilterProxyModel;
    proxy->setSourceModel(model);
 
    cb->setModel(proxy);
    cb->setEditable(true);
    cb->setCompleter(0);
 
    // When the edit text changes, use it to filter the proxy model.
    connect(cb, SIGNAL(editTextChanged(QString)), proxy, SLOT(setFilterWildcard(QString)));

QStringListModel * model = new QStringListModel;

    for (int x = 0; x < 1000; x++)
    {
        model->insertRow(model->rowCount());
        model->setData(model->index(model->rowCount() - 1, 0), QString("hello%1").arg(x), Qt::DisplayRole);
    }

    QComboBox * cb = new QComboBox;

    QSortFilterProxyModel * proxy = new QSortFilterProxyModel;
    proxy->setSourceModel(model);

    cb->setModel(proxy);
    cb->setEditable(true);
    cb->setCompleter(0);

    // When the edit text changes, use it to filter the proxy model.
    connect(cb, SIGNAL(editTextChanged(QString)), proxy, SLOT(setFilterWildcard(QString)));

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