[PyQt] inheriting QTreeWidgetItem Question

[dizou]

Phil Thompson-5 wrote:
> 
> On Thu, 12 Nov 2009 10:36:34 -0800 (PST), dizou <di_zou at yahoo.com> wrote:
>> I am trying to get a class i wrote that inherits QTreeWidgetItem to
> display
>> on the QTreeWidget. If I used just the normal QTreeWidgetItem I would
> have
>> code like this:
>> 
>> tree = QTreeWidgetItem(self)
>> tree.setFlags(...)
>> tree.setIcon(...)
>> tree.setText(...)
>> 
>> However I have a class that inherits the QTreeWidgetItem class:
>> 
>> class A(QTreeWidgetItem):
>>     def __init__(self):
>>         QTreeWidgetItem.__init__(self)
>> 
>> Then when I do this:
>> 
>> tree = A(self)
>> tree.setFlags(...)
>> tree.setIcon(...)
>> tree.setText(...)
>> 
>> nothing is displayed in the QTreeWidget. What do I have to do to get the
>> items to be displayed?
> 
> You aren't passing a parent to QTreeWidgetItem.__init__() so its probably
> being garbage collected.
> 
> Phil
> _______________________________________________
> PyQt mailing list    PyQt at riverbankcomputing.com
> http://www.riverbankcomputing.com/mailman/listinfo/pyqt
> 
> 

So I have this now:

class A(QTreeWidgetItem):
    def __init__(self, parent):
        QTreeWidgetItem.__init__(parent)
 
class B(QTreeWidget):
    #stuff
    def f():
        tree = A(self)
        tree.setFlags(...)
        tree.setIcon(...)
        tree.setText(...)

When function f() is called, I get this error:

    tree.setFlags(...)
RuntimeError: underlying C/C++ object has been deleted
-- 
View this message in context: http://old.nabble.com/inheriting-QTreeWidgetItem-Question-tp26324003p26324404.html
Sent from the PyQt mailing list archive at Nabble.com.