Problem with QTreeWidget.setItemDelegateForRow

[jryannel]

Okay. Seems you have different data types on different hierarchies on your tree. One option I could see would be to have the item delegate be aware of the models item type. Here are the steps:

(1) Define a new ItemRole e.g enum { TypeRole = Qt::UserRole + 1 };
(2) Define an enums on the types you want to differentiate between
(3) For each tree item set your type with setData(TypeRole, YourType);
(4) Create a CustomItemDelegate and create your editor based on your type (you get an index as a parameter, just ask the index.data(TypeRole).toInt() to get your type back

Not sure how else to transport custom type information from model over to the delegate. Please let me know if this works. Thanks

[photo_tom]

The custom user role was a good idea, but I could not make it work. Still not sure why.

However, while looking at the star delegate demo app, I saw that it used a custom variant data type. So I re-wrote things to that I had a custom data type that transfer both desired index for the combobox and the stringlist to generate the combobox from. Once I did this and then line for line adapted the demo app, I got things to work.

So for now, I think the only way to do this is
1 - Assign a editing delegate to the entire column
2 - In that delegate, when a custom data type is found, generate the correct editing control for your needs.