菜单栏、工具栏、状态栏

菜单栏

'''

创建和使用菜单

'''

import sys,math
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,a):
        print(self.sender().text())


if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = Menu()
    main.show()
    sys.exit(app.exec_())

工具栏

'''

创建和使用工具栏

工具栏默认按钮：只显示图标，将文本作为悬停提示展示

工具栏按钮有3中显示状态

1.  只显示图标
2.  只显示文本
3.  同时显示文本和图标
'''

import sys,math
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_())

状态栏

'''

创建和使用状态栏

'''

import sys,math
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_())