setEditorData() for QComboBox Delegate

[wysota]

The combobox has to show whatever data is in the model for the current cell and not what you want. You can say that if the model doesn't return data for an index, "a" should be set as the combobox current item. But then the model will never contain "a" (or its equivalent) unless you first change the combobox to something else, close the editor, reopen it again and change the cell back to "a".

[mickgraham]

I have been working on the same thing. Like wysota said, the combobox has to show whatever data is in the model for the current cell. to initialise the combobox to 'a', set the value in the model to 'a'. Then in the setEditorData() function you can retrieve the value in the model using something like this.

QString value = index.model()->data(index, Qt::DisplayRole).toString();

QString value = index.model()->data(index, Qt::DisplayRole).toString();

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Then you can set the current index like you have previously.

QComboBox *comboBox = static_cast<QComboBox*>(editor);
    comboBox->setCurrentIndex(comboBox->findText(value));

QComboBox *comboBox = static_cast<QComboBox*>(editor);
    comboBox->setCurrentIndex(comboBox->findText(value));

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