pyqt5中的菜单栏 ，状态栏和工具栏

菜单栏 Menu

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
class Menu(QMainWindow) :
    def __init__(self):
        super(Menu,self).__init__()
        bar = self.menuBar()  # 获取菜单栏
        file = bar.addMenu("文件")
        file.addAction("新建")
        save = QAction("保存",self)
        save.setShortcut("Ctrl + S")
        file.addAction(save)
        save.triggered.connect(self.process)
        edit = bar.addMenu("Edit")
        edit.addAction("copy")
        edit.addAction("paste")
        quit = QAction("退出",self)
        file.addAction(quit)
    def process(self):
        print(self.sender().text())
if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = Menu()
    main.show()
    sys.exit(app.exec_())

状态栏 menuBar

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
class StatusBar(QMainWindow) :
    def __init__(self):
        super(StatusBar,self).__init__()
        self.initUI()
    def initUI(self):
        self.setWindowTitle("状态栏演示")
        self.resize(300,200)
        bar = self.menuBar()
        file = bar.addMenu("File")
        file.addAction("show")
        file.triggered.connect(self.processTrigger)
        self.setCentralWidget(QTextEdit())
        self.statusBar = QStatusBar()
        self.setStatusBar(self.statusBar)
    def processTrigger(self,q):
        if q.text() == "show" :
            self.statusBar.showMessage(q.text() + " 菜单被点击了",5000)
if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = StatusBar()
    main.show()
    sys.exit(app.exec_())

工具栏

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
class Toolbar(QMainWindow) :
    def __init__(self):
        super(Toolbar,self).__init__()
        self.initUI()
    def initUI(self):
        self.setWindowTitle("工具栏例子")
        self.resize(300,200)
        tb1 = self.addToolBar("File")
        new = QAction(QIcon('./images/new.png'),"new",self)
        tb1.addAction(new)
        open = QAction(QIcon('./images/open.png'),"open",self)
        tb1.addAction(open)
        save = QAction(QIcon('./images/save.png'),"save",self)
        tb1.addAction(save)
        tb2 = self.addToolBar("File1")
        new1 = QAction(QIcon('./images/new.png'),"新建",self)
        tb2.addAction(new1)
        tb2.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
        tb1.actionTriggered.connect(self.toolbtnpressed)
        tb2.actionTriggered.connect(self.toolbtnpressed)
    def toolbtnpressed(self,a):
        print("按下的工具栏按钮是",a.text())
if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = Toolbar()
    main.show()
    sys.exit(app.exec_())