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_())