18. PyQt6 的对话框QInputDialog

import sys
from PyQt6.QtWidgets import QApplication, QMainWindow, QWidget, QLineEdit, QInputDialog, QPushButton
from PyQt6.QtGui import QGuiApplication


class App(QMainWindow):

    def __init__(self):
        super().__init__()
        self.le = None
        self.btn = None
        self.initUI()

    def initUI(self):
        self.setWindowTitle("PyQt6 的对话框QInputDialog")

        self.btn = QPushButton("输入", self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)

        self.le = QLineEdit(self)
        self.le.setReadOnly(True)
        self.le.move(130, 22)

        self.setGeometry(100, 100, 400, 300)
        self.center()

    def showDialog(self):
        text, ok = QInputDialog.getText(self, "输入窗口", "请输入你的名字")

        if ok:
            self.le.setText(str(text))

    def center(self):
        qr = self.frameGeometry()
        cp = QGuiApplication.primaryScreen().availableGeometry().center()
        qr.moveCenter(cp)
        self.move(qr.topLeft())


if __name__ == "__main__":
    app = QApplication(sys.argv)
    cls_app = App()
    cls_app.show()
    sys.exit(app.exec())