Disable Item in Qt Combobox

Question

I can\'t find a standard way to disable an individual item in a Qt combo box. Is there a facility to do this in Qt that I am missing?

Answer 1

Taken from here:

// Get the index of the value to disable
QModelIndex index = ui.comboBox->model()->index(1, 0); 

// This is the effective 'disable' flag
QVariant v(0);

// the magic
ui.comboBox->model()->setData(index, v, Qt::UserRole - 1);

To enable again use:

QVariant v(1 | 32);

The model used maps the flags word to Qt::UserRole - 1 -- that's what makes this code work. It's not a generic solution that would work with an arbitrary model.