Readonly Model implementation requirements for QComboBox

[DeepDiver]

I was always returning the cell data.
Something like:

if (!index.isValid())
    return QVariant();
if (role == Qt::DecorationRole)
    return QIcon(/* */);
switch(index.column())
{
    case 0: return "col0";
    case 1: return "col1";
    case 2: return "col2";
...
}
return QVariant();

if (!index.isValid())
    return QVariant();
if (role == Qt::DecorationRole)
    return QIcon(/* */);
switch(index.column())
{
    case 0: return "col0";
    case 1: return "col1";
    case 2: return "col2";
...
}
return QVariant();

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What does that mean?

I return a string for the role Qt::SizeHintRole - which causes each item to have a size of 0.
That's why the list view has a total height of 0 as well.



Again THX a lot!