Cannot cast internal pointer of QModelIndex to custom class pointer

[anda_skoa]

So I tried getting it by casting the internal pointer of the model index.

That is very bad in any way, it is called "internal" for a reason. Only the model should ever make assumption about it because it is the one creating the index.

I would recommend adding a role that returns the full model data entry

Foo foo = index.data(FooRole).value<Foo>();

Foo foo = index.data(FooRole).value<Foo>();

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Cheers,
_