PyQt5 对话框示例

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *

class Example(QMainWindow):
    
    def __init__(self):
        super().__init__()
        
        self.initUI()
        
        
    def initUI(self):         
        self.btn = QPushButton('Dialog', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)
        
        self.le = QLineEdit(self)
        self.le.move(130, 22)
        
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Input dialog')
        self.show()
     
    def showDialog(self):
        
        text, ok = QInputDialog.getText(self, 'Input Dialog', 
            'Enter your name:')
        
        if ok:
            self.le.setText(str(text))
       
    
if __name__ == '__main__':
    
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())