why ipython doesnt show this error ? Programming Software Development by krystosan …314, in createUI self.sfEdt.setValidator(QtGui.QIntValidator()) TypeError: arguments did not match any overloaded call…: QIntValidator(QObject): not enough arguments QIntValidator(int, int, QObject): not enough arguments… Re: PyQt Programming Software Development by woooee …: self.lined2.setValidator(None) elif i == 1: self.lined2.setValidator(QIntValidator(self.lined2)) elif i == 2: self.lined2.setValidator(QDoubleValidator(-999… Re: why ipython doesnt show this error ? Programming Software Development by vegaseat Do you have PyQT/PySide installed on IronPython? Re: why ipython doesnt show this error ? Programming Software Development by krystosan yes i have PyQt installed on IronPython, and thats where it works but it doesnt work with python interpreter... but if i try to run with pythonw anyPyQtApp.py it works fine.. Re: why ipython doesnt show this error ? Programming Software Development by vegaseat Which version of Python are you using? Re: why ipython doesnt show this error ? Programming Software Development by krystosan version 2.6 Re: why ipython doesnt show this error ? Programming Software Development by vegaseat You may be using a very old version of PyQT/PySide? Not sure why one would use PyQT with IronPython, since it's advantage is the use of the GUI code built into MS .NET.