有个项目需要动态创建菜单,可用框架为:
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
class Ui_MainWindow(QtWidgets.QMainWindow):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
self.menu = QtWidgets.QMenu(self.menubar)
self.menu.setObjectName("menu")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.action0=QtWidgets.QAction(MainWindow)
self.action0.triggered.connect(lambda: print(0))
self.menu.addAction(self.action0)
self.action1=QtWidgets.QAction(MainWindow)
self.action1.triggered.connect(lambda: print(1))
self.menu.addAction(self.action1)
self.action2=QtWidgets.QAction(MainWindow)
self.action2.triggered.connect(lambda: print(2))
self.menu.addAction(self.action2)
self.menubar.addAction(self.menu.menuAction())
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.menu.setTitle(_translate("MainWindow", "文件"))
self.action0.setText(_translate("MainWindow", "打开"))
self.action1.setText(_translate("MainWindow", "保存"))
self.action2.setText(_translate("MainWindow", "另存为…"))
if __name__=="__main__":
app=QtWidgets.QApplication(sys.argv)
win=QtWidgets.QMainWindow()
ui=Ui_MainWindow()
ui.setupUi(win)
win.show()
sys.exit(app.exec_())
但需要的菜单不是固定的,而是根据数据库中的内容动态改变的。将上面的代码改为:
self.action=[]
for i in range(3):
self.action.append(QtWidgets.QAction(MainWindow))
self.action[i].triggered.connect(lambda: print(i))
self.menu.addAction(self.action[i])
之后,print结果都为 2
求解决方法/、