PyQt5基本窗口控件-----QInputDialog

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QInputDialog由一个文本对话框和理工按钮组成，当单机ok或者按下回车后，在父窗口可以收集输入的信息。

• getItem

  ：获得列表选项输入

• getText

  ：获得标准字符输入

• getInt

  ：获得标准整数输入

• getDouble

  ：获得标准浮点数输入

import sys
from PyQt5.QtWidgets import *

class QInputDialogDemo(QWidget):
    def __init__(self):
        super(QInputDialogDemo, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('QInputDialogDemo')

        layout = QFormLayout()

        # 获取列表中的选项
        self.button1 = QPushButton('获取列表中的选项')
        self.button1.clicked.connect(self.getItem)
        self.lineEdit1 = QLineEdit()

        layout.addRow(self.button1, self.lineEdit1)

        # 获取字符串
        self.button2 = QPushButton('获取字符串')
        self.button2.clicked.connect(self.getText)
        self.lineEdit2 = QLineEdit()

        # 获取整数
        self.button3 = QPushButton('获取整数')
        self.button3.clicked.connect(self.getInt)
        self.lineEdit3 = QLineEdit()

        layout.addRow(self.button1, self.lineEdit1)
        layout.addRow(self.button2, self.lineEdit2)
        layout.addRow(self.button3, self.lineEdit3)

        self.setLayout(layout)

    def getItem(self):
        items = ('C', 'C++', 'Python', 'php')
        item, ok = QInputDialog.getItem(self, '请选择编程语言', '语言列表', items)
        if ok and item:
            self.lineEdit1.setText(item)

    def getText(self):
        text, ok = QInputDialog.getText(self, '文本输入框', '输入姓名')
        if ok and text:
            self.lineEdit2.setText(text)

    def getInt(self):
        num, ok = QInputDialog.getInt(self, '整数输入框', '输入数字')
        if ok and num:
            self.lineEdit3.setText.srt((num))

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