PySide QPushButton右键单击上下文菜单不按按钮分配

import sys
from PySide2.QtWidgets import QApplication, QMainWindow, QPushButton, QMenu

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

    def initUI(self):
        self.setWindowTitle("PySide Right-click Context Menu Example")
        self.setGeometry(100, 100, 300, 200)

        button = QPushButton("Right-click me", self)
        button.setGeometry(50, 50, 200, 30)

        # 绑定右键单击事件
        button.setContextMenuPolicy(Qt.CustomContextMenu)
        button.customContextMenuRequested.connect(self.showContextMenu)

    def showContextMenu(self, pos):
        menu = QMenu(self)
        action1 = menu.addAction("Action 1")
        action2 = menu.addAction("Action 2")
        action3 = menu.addAction("Action 3")

        # 处理菜单项的点击事件
        action1.triggered.connect(self.action1Clicked)
        action2.triggered.connect(self.action2Clicked)
        action3.triggered.connect(self.action3Clicked)

        menu.exec_(self.mapToGlobal(pos))

    def action1Clicked(self):
        print("Action 1 clicked")

    def action2Clicked(self):
        print("Action 2 clicked")

    def action3Clicked(self):
        print("Action 3 clicked")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    mainWindow = MainWindow()
    mainWindow.show()
    sys.exit(app.exec_())