Hi Justin,
thanks again for explaining to me. Another problem I've
been having with understanding pyQT is handling the error from .isValid().
As I am just working from Yasin Uludag's tutorial codes I often just
attempt to modify the code with stopgap solutions that may not be the
proper way or efficient way of dealing with it because I do not understand
why the methods are setup the way they are.
For example, I introduced a root parent into my model so that I could
parent all my later items under like so
class SceneGraphModel(QtCore.QAbstractItemModel):
def __init__(self, parent=None):
super(SceneGraphModel, self).__init__(parent)
self._rootNode=Node(None).
However, if I attempted a self.model.rowCount(self.model._rootNode), which
should give me 0 when queried before I add in any rows I get a :
AttributeError: 'Node' object has no attribute 'isValid'
I want to get a rowCount() off this particular parent because when I want
to insert new rows which are entered at the end of the row list, rather
than at the begining if I do it manually. What should be the proper way of
creating a main root parent?
Thank you
Gann Boon Bay
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