As copied from the mailing list.

I'm trying to get Matplotlib up and running on PySide with some quick hacks on
the PyQt backend and I'm having some trouble with the sliders.

This code:
        QtCore.QObject.connect( self.sliderleft,
                                QtCore.SIGNAL( "valueChanged(int)" ),
                                self.sliderright.setMinimum )

produces the following error:
Error calling slot "setMinimum"
TypeError: setMinimum() takes exactly one argument (0 given)


The following test program also creates the error when moving the first slider:
import sys
from PySide import QtGui,QtCore

def test(*args):
    print len(args),args

app = QtGui.QApplication(sys.argv)

slider = QtGui.QSlider(QtCore.Qt.Horizontal)
slider2 = QtGui.QSlider(QtCore.Qt.Horizontal)

slider.valueChanged[int].connect(test)
slider.valueChanged[int].connect(slider2.setMaximum)

slider.show()
slider2.show()
app.exec_()
sys.exit() 

The test function clearly receives one argument but for some reason setMaximum
and setMinimum do not.