PyQt弹出式对话框的常用方法及标准按钮类型

import sysfrom PyQt5.QtCore import *from PyQt5.QtGui import *from PyQt5.QtWidgets import *class MyWindow(QWidget): def __init__(self,parent=None): super(MyWindow,self).__init__(parent) self.setWindowTitle("弹出式对话框例子") self.resize(400,200) self.btn1=QPushButton(self) self.btn1.setText("消息框") self.btn1.clicked.connect(self.msg1) layout=QVBoxLayout() self.btn2=QPushButton(self) self.btn2.setText("问答对话框") self.btn2.clicked.connect(self.msg2) self.btn3=QPushButton() self.btn3.setText("警告对话框") self.btn3.clicked.connect(self.msg3) self.btn4=QPushButton() self.btn4.setText("严重错误对话框") self.btn4.clicked.connect(self.msg4) self.btn5=QPushButton() self.btn5.setText("关于对话框") self.btn5.clicked.connect(self.msg5) layout.addWidget(self.btn1) layout.addWidget(self.btn2) layout.addWidget(self.btn3) layout.addWidget(self.btn4) layout.addWidget(self.btn5) self.setLayout(layout)  def msg1(self): #使用infomation信息框 QMessageBox.information(self,"标题","消息正文",QMessageBox.Yes|QMessageBox.No,QMessageBox.Yes) def msg2(self):  QMessageBox.question(self,"标题","问答消息正文",QMessageBox.Yes|QMessageBox.No,QMessageBox.Yes) def msg3(self): QMessageBox.warning(self,"标题","警告消息正文",QMessageBox.Yes|QMessageBox.No,QMessageBox.Yes) def msg4(self): QMessageBox.critical(self,"标题","严重错误消息正文",QMessageBox.Yes|QMessageBox.No,QMessageBox.Yes) def msg5(self): QMessageBox.about(self,"标题","关于消息正文")if __name__=="__main__": app=QApplication(sys.argv) win=MyWindow() win.show() sys.exit(app.exec_())