import sys
from PyQt4 import QtGui



class Beispiel(QtGui.QMainWindow):

    def __init__(self):
        super(Beispiel, self).__init__()

        self.erstelleUI()

    def erstelleUI(self):
        self.statusBar().showMessage("Ready")

        self.setGeometry(300,300,300,300)
        self.setWindowTitle("Fenster")
        self.show()

        exitAction=QtGui.QAction(QtGui.QIcon("exit.png"),"&Exit",self)
        exitAction.setShortcut("Ctrl+Q")
        exitAction.setStatusTip("Exit application")
        exitAction.triggered.connect(self.shutdown)

        self.statusBar()

        menubar=self.menuBar()

        fileMenu=menubar.addMenu("&File")
        fileMenu.addAction(exitAction)
        fileMenu2=menubar.addMenu("&Hallo")
        fileMenu2.addAction("Hi")


        self.toolbar=self.addToolBar("Exit")
        self.toolbar.addAction(exitAction)

    def shutdown(self):
        self.close()
        self.quit()






def main():

    mh=QtGui.QApplication(sys.argv)
    bsp=Beispiel()
    sys.exit(mh.exec_())

if __name__ == '__main__':
    main()