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#QInputDialogimport sysfrom PyQt5.QtWidgets import *from PyQt5.QtCore import *from PyQt5.QtGui import *class QInputDialogDemo(QWidget):    def __init__(self):        super(QInputDialogDemo,self).__init__()        self.initUI()    def initUI(self):        self.setWindowTitle('输入对话框')        layout = QFormLayout()        self.button1 = QPushButton('获取列表中选项')        self.linedit = QLineEdit()        self.button1.clicked.connect(self.getItem)        self.button2 = QPushButton('获取字符串')        self.linedit2 = QLineEdit()        self.button2.clicked.connect(self.getText)        self.button3 = QPushButton('获取整数')        self.linedit3 = QLineEdit()        self.button3.clicked.connect(self.getInt)        layout.addRow(self.button1,self.linedit)        layout.addRow(self.button2,self.linedit2)        layout.addRow(self.button3,self.linedit3)        self.setLayout(layout)    def getItem(self):        items = ('C','C++','Ruby','Python','Java')        item,ok = QInputDialog.getItem(self,'请选择编程语言','语言列表',items)        if ok and item:            self.linedit.setText(item)    def getText(self):        text,ok = QInputDialog.getText(self,'文本输入框','输入姓名')        if ok and text:            self.linedit2.setText(text)    def getInt(self):        num,ok = QInputDialog.getInt(self,'整数输入框','输入数字')        if ok and num:            self.linedit3.setText(num)if __name__ == '__main__':    app = QApplication(sys.argv)    main = QInputDialogDemo()    main.show()    app.exit(app.exec_())

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