我需要帮助在 PyQt5 中制作菜单栏 [英] I need help making a menu bar in PyQt5

问题描述

几天以来，我一直在尝试在我的程序中实现菜单栏，但似乎无法运行.我希望有人查看我的代码并给我一个模板来制作菜单栏.

I have been trying to implement a menu bar in my program for a few days now and i cant seem to get one running. I would like someone to look at my code and give me a template to follow to making a menu bar.

class MainWindow(QMainWindow):
    def __init__(self, databaseFilePath, userFilePath):
        super(MainWindow,self).__init__()
        self.moviesFilePath = moviesFilePath
        self.currentUserFilePath = currentUserFilePath
        self.createWindow()

    def changeFilePath(self):
        self.currentUserFilePath = functions_classes.changeFP()
        functions_classes.storeFP(self.currentUserFilePath, 1)

    def createWindow(self):
        self.setWindowTitle('Movies')
        #Menu Bar
        fileMenuBar = QMenuBar().addMenu('File')

当从菜单栏文件调用名为更改用户数据库位置"的菜单选项时，我希望调用方法 changeFilePath.我已经读到行动是实现这一目标的关键，但是当我尝试实施它们时，它们都没有奏效.

The method changeFilePath is what I would like to be called when a menu option called 'Change user database location' is called from the menu bar File. I have read that actions are the key to this but when every i have tried to implement them they haven't worked.

推荐答案

QMainWindow 类已经有一个 菜单栏.

所以你只需要添加菜单到它，然后添加一个动作到那个菜单，比如这个:

So you just need to add a menu to it, and then add an action to that menu, like this:

    def createUI(self):
        ...
        menu = self.menuBar().addMenu('File')
        action = menu.addAction('Change File Path')
        action.triggered.connect(self.changeFilePath)

编辑:

这是一个基于您的示例类的完整工作示例:

Here's a full, working example based on your example class:

from PyQt5 import QtWidgets

class MainWindow(QtWidgets.QMainWindow):
    def __init__(self, databaseFilePath, userFilePath):
        super(MainWindow,self).__init__()
        self.databaseFilePath = databaseFilePath
        self.userFilePath = userFilePath
        self.createUI()

    def changeFilePath(self):
        print('changeFilePath')
        # self.userFilePath = functions_classes.changeFilePath()
        # functions_classes.storeFilePath(self.userFilePath, 1)

    def createUI(self):
        self.setWindowTitle('Equipment Manager 0.3')
        menu = self.menuBar().addMenu('File')
        action = menu.addAction('Change File Path')
        action.triggered.connect(self.changeFilePath)   

if __name__ == '__main__':

    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow('some/path', 'some/other/path')
    window.show()
    window.setGeometry(500, 300, 300, 300)
    sys.exit(app.exec_())

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