目录

一、Qt Designer 在窗口中添加菜单和工具栏

二、源代码

1、界面代码

2、逻辑代码

3、演示

三、相关功能

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一、Qt Designer 在窗口中添加菜单和工具栏

右键可以选择创建菜单栏。创建后双击【在这里输入】，然后输入菜单名，敲下回车确认，如图所示

二、源代码

1、界面代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(630, 369)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(50, 90, 511, 121))
        font = QtGui.QFont()
        font.setPointSize(50)
        self.label.setFont(font)
        self.label.setObjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
        self.menuBar = QtWidgets.QMenuBar(MainWindow)
        self.menuBar.setGeometry(QtCore.QRect(0, 0, 630, 22))
        self.menuBar.setObjectName("menuBar")
        self.A = QtWidgets.QMenu(self.menuBar)
        self.A.setObjectName("A")
        self.C = QtWidgets.QMenu(self.A)
        self.C.setObjectName("C")
        MainWindow.setMenuBar(self.menuBar)
        self.B = QtWidgets.QAction(MainWindow)
        self.B.setObjectName("B")
        self.D = QtWidgets.QAction(MainWindow)
        self.D.setObjectName("D")
        self.C.addAction(self.D)
        self.A.addAction(self.B)
        self.A.addAction(self.C.menuAction())
        self.menuBar.addAction(self.A.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "没有结果"))
        self.A.setTitle(_translate("MainWindow", "A"))
        self.C.setTitle(_translate("MainWindow", "C"))
        self.B.setText(_translate("MainWindow", "B"))
        self.D.setText(_translate("MainWindow", "D"))

2、逻辑代码

# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from untitled import Ui_MainWindow


class MyMainForm(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MyMainForm, self).__init__(parent)
        self.setupUi(self)

        self.B.triggered.connect(self.select_change2)
        self.D.triggered.connect(self.select_change4)

    def select_change2(self,):
        self.label.setText("2")

    def select_change4(self,):
        self.label.setText("4")


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

3、演示

我们选中，则会触发相应操作

三、相关功能

我们可以通过在界面文件的retranslateUi函数中，添加以下代码增加快捷键

self.B.setShortcut('Alt+Insert')

连接槽函数，我们的动作信号为triggered

self.B.triggered.connect(self.select_change2)