focusChanged() not working for me.

[GGibson]

Hi, maybe you can tell me what I'm doing wrong. Using Qt4 PyQt. I get no errors but my slot/handler never fires.

Thanks for looking - this is driving me nuts.

#MainApplication.py
from PyQt4.QtGui import QApplication
from PyQt4 import QtCore
 
class Application(QApplication):
 
    def __init__(self, *args):
        QApplication.__init__(self, *args)
 
    def setupSignals(self):
        print "setting up signals..."
        QtCore.QObject.connect(self, QtCore.SIGNAL("focusChanged()"), self.changedFocusSlot)
 
    def changedFocusSlot(self, old, now):
        print "focus changed"

#MainApplication.py
from PyQt4.QtGui import QApplication
from PyQt4 import QtCore

class Application(QApplication):

    def __init__(self, *args):
        QApplication.__init__(self, *args)
        
    def setupSignals(self):
        print "setting up signals..."
        QtCore.QObject.connect(self, QtCore.SIGNAL("focusChanged()"), self.changedFocusSlot)
        
    def changedFocusSlot(self, old, now):
        print "focus changed"

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#main.py
#!/usr/bin/python
 
from mainWindowUI import MainWindow
from PyQt4 import QtGui, QtCore
import sys
from MainApplication import Application
 
def main():
    app = Application(sys.argv)
    wnd = MainWindow()
    wnd.show()
    wnd.activateWindow()
    app.setupSignals()
    sys.exit(app.exec_())
 
if __name__ == '__main__':
    main()

#main.py
#!/usr/bin/python

from mainWindowUI import MainWindow
from PyQt4 import QtGui, QtCore
import sys
from MainApplication import Application

def main():
    app = Application(sys.argv)
    wnd = MainWindow()
    wnd.show()
    wnd.activateWindow()
    app.setupSignals()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

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[munna]

I am not too familiar with Python or PyQt but I think the problem is with your QObject.connect line.

The SIGNAL is focusChanged with no parameters but the slot takes 2 parameter. I think the signal should be something like

QtCore.SIGNAL("focusChanged(QWidget *, QWidget *)")

QtCore.SIGNAL("focusChanged(QWidget *, QWidget *)")

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Hope this helps

[GGibson]

Yay! That works.

Thought I already tried that and every variation *forehead slap*.

Thanks a bunch.