Dear mailing list, In my python code, I usually create QStandardItem with some data, but now I realize it may be plain wrong :
def make_simple_model(my_data) model = QtGui.QStandardItemModel(1, 1) item = QtGui.QStandardItem() item.setData(my_data, Qt.UserRole) model.setItem(0, 0, item) # Model takes ownership of the Item (if I understand Qt's doc well) return model my_data = ... # some kind of Python object model = make_simple_model(my_data) # After this, Python has lost track of my data my_data = None # This one is correct, because model is still tracked by Python and the item is owned by the model item = model.item(0,0) # But this is dangerous (because the data has been lost) item.data( Qt.UserRole) If I got the "PySide pitfalls" page well, this code is wrong : my_data got lost (last line of the code) and therefore, the QStandardItem UserRole data is a dangling p\ ointer... Is my interpretation correct ? If so, I'd be happy to add this to the "pitfalls" page. Although that page does explain the issue, somehow, I thought this code was cor\ rect until now (it worked thousands of times) => maybe other developpers may have the same misunderstanding. Thx, Stefan _______________________________________________ PySide mailing list PySide@lists.pyside.org http://lists.pyside.org/listinfo/pyside
