On 2/25/2008 10:29 AM, Phil Thompson wrote:
======================================================= from PyQt4.Qt import * app = QApplication([]) w = QWidget() L = QVBoxLayout(w) L.addWidget(QLabel("ciao", w))called_class = [] class MyScrollArea(QScrollArea): def sizeHint(self): called_class.append(1) return QSize(100,100) called_func = [] def mySizeHint(*args): called_func.append(1) return QSize(100,100) sv = MyScrollArea(w) sv.sizeHint = mySizeHint # the trick! L.addWidget(sv) L.activate() assert not called_class assert called_func ======================================================= Traceback (most recent call last): File "sizehint.py", line 24, in ? assert called_func AssertionError My understanding is that the function "mySizeHint()" should be called while calculating the size, as it was overridden. What happens is that, misteriously, *neither* sizeHint() function is called. Of course, if you comment the marked line, the overridden method is called, as expected.SIP is looking for a method to invoke - not just a callable. See the implementation of sip_api_is_py_method() in siplib.c.
I'm not sure I understand -- the comment seems to hint at a performance problem with PyCallable_Check. Besides the performance, would that work?
-- Giovanni Bajo _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
