Question

I am starting to learn to use PyQt4. I’ve got a simple gui window I want to show (nothing fancy).

Here’s the code for that :

import sys
from PyQt4 import QtGui
from test import Ui_MainWindow

class MyForm(QtGui.QMainWindow):
   def __init__(self, parent=None):
       QtGui.QWidget.__init__(self, parent)
       self.ui = Ui_MainWindow
       self.ui.setupUi(self)          

if __name__ == "__main__":

    app = QtGui.QApplication(sys.argv)
    myapp = MyForm()
    myapp.show()
    sys.exit(app.exec_())

But eclipse is giving me following error:

TypeError: unbound method setupUi() must be called with Ui_MainWindow instance
as first argument (got MyForm instance instead)

Any suggestions?

Answer 1

You should inherit Ui_MainWindow:

import sys
from PyQt4 import QtGui
from test import Ui_MainWindow

class MyForm(QtGui.QMainWindow, Ui_MainWindow):
   def __init__(self, parent=None):
       QtGui.QWidget.__init__(self, parent)
       self.setupUi(self)


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = MyForm()
    myapp.show()
    sys.exit(app.exec_())

Or you can create an Ui_MainWindow instance:

import sys
from PyQt4 import QtGui
from test import Ui_MainWindow

class MyForm(QtGui.QMainWindow):
   def __init__(self, parent=None):
       QtGui.QWidget.__init__(self, parent)
       self.ui = Ui_MainWindow()    #note: instance, not the class
       self.ui.setupUi(self)


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    myapp = MyForm()
    myapp.show()
    sys.exit(app.exec_())