[PyQt] QComboBox don't emit signal into a dialog box

[Vincent Vande Vyvre]

When placed into a dialog box the QComboBox don't emit any signal if the 
user activate it.

When the current item is changed by the program, the signal is correctly 
emitted.

Python 2.7,  Qt: 4.8.1,  PyQt: 4.9.1
Python 3.2,  Qt: 4.8.1,  PyQt: 4.9.1

Example

from PyQt4 import QtGui

class Editor(object):
     def __init__(self, Dial):
         super(Editor, self).__init__()
         self.grid = QtGui.QGridLayout(Dial)
         self.cmb = QtGui.QComboBox(Dial)
         self.grid.addWidget(self.cmb, 0, 0, 1, 1)
         self.cmb.addItems(['One', 'Two', 'Three'])
         self.cmb.currentIndexChanged.connect(self.index_changed)
         self.cmb.activated.connect(self.index_changed)
         self.btn = QtGui.QPushButton('Quit', Dial)
         self.grid.addWidget(self.btn, 1, 0, 1, 1)
         self.btn.clicked.connect(Dial.accept)

         self.cmb.setCurrentIndex(1)

     def index_changed(self, idx):
         print('Index:', idx)

app = QtGui.QApplication([])
Dial = QtGui.QDialog()
Editor(Dial)
reply = Dial.exec_()

With Qt: 5.0.2 + PyQt: 5.0 no problem, that's works.

-- 
Vincent V.V.
Oqapy <https://launchpad.net/oqapy> . Qarte 
<https://launchpad.net/qarte> . PaQager <https://launchpad.net/paqager>