创建输入框

# -*- coding: utf-8 -*-


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


class DialogDemo(QMainWindow):

    def __init__(self, parent=None):
        super(DialogDemo, self).__init__(parent)
        self.setWindowTitle("Dialog 例子")
        self.resize(350, 300)

        self.btn = QPushButton(self)
        self.btn.setText("弹出对话框")
        self.btn.move(50, 50)
        self.btn.clicked.connect(self.showdialog)




    def showdialog(self):


        dialog = QInputDialog()
        dialog.setInputMode(0)  # 0:文本；1：整数；2：浮点数

        dialog.setWindowTitle("温馨提示")
        dialog.setLabelText("设置期号将删除之前所有数据")  # 0:文本；1：整数；2：浮点数

        dialog.setOkButtonText("确定")
        dialog.setCancelButtonText("取消")

        if dialog.exec_() != 0:
            # 确认
            print("enter")
            if dialog.inputMode() == 0:
                print(dialog.textValue(), 0)
            elif dialog.inputMode() == 1:
                print(dialog.textValue(), 1)
            elif dialog.inputMode() == 2:
                print(dialog.doubleValue(), 2)
        else:
            # 取消
            # print("取消",dialog.intValue())
            pass


        # dialog = QDialog()
        # btn = QPushButton("确定", dialog)
        # btn2 = QPushButton("取消", dialog)
        # Edit = QLineEdit(dialog)
        # btn.move(20, 50)
        # btn2.move(110, 50)
        # Edit.move(40, 20)
        # dialog.setWindowTitle("Dialog")
        # dialog.setWindowModality(Qt.ApplicationModal)
        # dialog.exec_()



if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = DialogDemo()
    demo.show()
    sys.exit(app.exec_())