Python 如何实现在PyQt5窗口中弹出等待提示框 Python源码

# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'window.ui' # # Created by: PyQt5 UI code generator 5.12 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(400, 227) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.loading = QtWidgets.QLabel(self.centralwidget) self.loading.setGeometry(QtCore.QRect(150, 20, 100, 100)) self.loading.setStyleSheet("") self.loading.setText("") self.loading.setObjectName("loading") self.pushButton_start = QtWidgets.QPushButton(self.centralwidget) self.pushButton_start.setGeometry(QtCore.QRect(50, 140, 100, 50)) self.pushButton_start.setObjectName("pushButton_start") self.pushButton_stop = QtWidgets.QPushButton(self.centralwidget) self.pushButton_stop.setGeometry(QtCore.QRect(250, 140, 100, 50)) self.pushButton_stop.setObjectName("pushButton_stop") MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.pushButton_start.setText(_translate("MainWindow", "启动等待提示")) self.pushButton_stop.setText(_translate("MainWindow", "停止等待提示"))