PyQt5 各种菜单实现

 # -*- coding: utf-8 -*-
 # Created by PCITZDF on 2018/4/8 15:36.
 # FileName: menuandtools.py

 import sys

 from PyQt5.QtGui import QIcon
 from PyQt5.QtWidgets import QMainWindow, QApplication, QAction, qApp, QMenu

 class Example(QMainWindow):
     def __init__(self):
         super().__init__()
         self.initUI()

     def initUI(self):
         self.menuInit()
         self.toolMenuInit()

         self.statusBar().showMessage("Ready")  # 设置状态栏
         self.setGeometry(300, 300, 250, 150)  # 设置窗体位置及大小
         self.setWindowTitle("Statusbar")  # 设置标题
         self.show()

     def menuInit(self):
         exitAct = QAction(QIcon('icons/node.png'), "exit", self)
         exitAct.setShortcut("Ctrl+Q")
         exitAct.setStatusTip("Exit Application")
         exitAct.triggered.connect(qApp.quit)

         menubar = self.menuBar()
         filemenu = menubar.addMenu("File")
         filemenu.addAction(exitAct)

         impMenu = QMenu("Import", self)

         newActioni = QAction("New", self, checkable=True)
         impMenu.addAction(newActioni)

         filemenu.addMenu(impMenu)

     def contextMenuEvent(self, e):
         """右键菜单"""
         cmenu = QMenu(self)

         newAct = cmenu.addAction("new")
         openAct = cmenu.addAction("Open")
         quitAct = cmenu.addAction("Quit")
         action = cmenu.exec_(self.mapToGlobal(e.pos()))
         if action == quitAct:
             qApp.quit()

     def toolMenuInit(self):
         """工具栏菜单"""
         exitAct = QAction(QIcon('icons/node.png'), "exit", self)
         exitAct.setShortcut("Ctrl+Q")
         exitAct.triggered.connect(qApp.quit)
         exitAct.setToolTip("退出应用")

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

 if __name__ == '__main__':
     app = QApplication(sys.argv)
     ex = Example()
     sys.exit(app.exec_())