pyqt4教程之实现windows窗口小示例分享

import sys
from pyqt4 import qtgui, qtcore
class window( qtgui.qmainwindow):
    def __init__(self):
        qtgui.qmainwindow.__init__(self)
        self.setwindowtitle('hello')
        self.resize(800,500)

        menubar = self.menubar()
        self.file = menubar.addmenu('&file')
        open = self.file.addaction('open')
        self.connect(open,qtcore.signal('triggered()'),self.onopen)

        save =self.file.addaction('save')
        self.connect(save,qtcore.signal('triggered()'),self.onsave)
        self.file.addseparator()
        close = self.file.addaction('close')
        self.connect(close,qtcore.signal('triggered()'),self.onclose)

        self.label = qtgui.qlabel('this is a google text')
        self.label.setalignment(qtcore.qt.aligncenter)
        self.setcentralwidget(self.label)

    def onopen(self):
        self.label.settext('open')
    def onclose(self):
        self.close()
    def onsave( self):
        self.label.settext('save')
    def contextmenuevent(self,event):
        self.file.exec_( event.globalpos())

app =qtgui.qapplication(sys.argv)
win = window()
win.show()
app.exec_()