Le 20/08/2014 00:11, Alex Murray a écrit :
Hi,
I've discovered some very strange behaviour when trying to delete a
QWidget from a QGridLayout. The following code demonstrates this
behaviour:
>>> from PyQt4 import QtGui
>>> import sys
>>> app = QtGui.QApplication(sys.argv)
>>> grid_layout = QtGui.QGridLayout()
>>> grid_layout.addWidget(QtGui.QWidget())
>>> item = self.grid_layout.takeAt(0)
>>> item.deleteLater()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'QWidgetItem' object has no attribute 'deleteLater'
This makes no sense to me whatsoever. Firstly, why is it returning a
QWidgetItem when I inserted a QWidget to begin with? Secondly, every
Qt object derives from QObject, and deleteLater() is a method of
QObject, so that method should exist. Additional info:
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
[GCC 4.8.2] on linux2
using PyQt4
QLayout.takeAt() returns a QWidgetItem not the instance of the widget
himself.
See: http://pyqt.sourceforge.net/Docs/PyQt4/qlayout.html#takeAt
You must use item.widget() to retrieve your widget instance.
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