PyQt5 QInputDialog应用

PyQt5从标准对话框获取输入

QInputDialog.getText() # 返回字符串

QInputDialog.getInt() # 返回整数

QInputDialog.getDouble() # 返回小数

QInputDialog.getItem() # 下拉式，返回选择的内容

import sys
from PyQt5.QtWidgets import QWidget, QFormLayout, QPushButton, QLineEdit, QInputDialog, QApplication


class InputdialogDemo(QWidget):
    def __init__(self, parent=None):
        super(InputdialogDemo, self).__init__(parent)
        layout = QFormLayout()
        self.btn1 = QPushButton("获得列表里的选项")
        self.btn1.clicked.connect(self.getItem)
        self.le1 = QLineEdit()
        layout.addRow(self.btn1, self.le1)
        self.btn2 = QPushButton("获取字符串")
        self.btn2.clicked.connect(self.getText)
        self.le2 = QLineEdit()
        layout.addRow(self.btn2, self.le2)
        self.btn3 = QPushButton("获取整数")
        self.btn3.clicked.connect(self.getInt)
        self.le3 = QLineEdit()
        layout.addRow(self.btn3, self.le3)
        self.setLayout(layout)
        self.setWindowTitle("Input Dialog例子")

    def getItem(self):
        items = ("C", "C++", "Java", "Python")
        item, ok = QInputDialog.getItem(self, "select Input dialog", "编程语言列表", items, 0, False)
        if ok and item:
            self.le1.setText(item)

    def getText(self):
        text, ok = QInputDialog.getText(self, 'Text Input Dialog', '输入姓名')
        if ok:
            self.le2.setText(str(text))

    def getInt(self):
        num, ok = QInputDialog.getInt(self, "integer input dualog", '请输入数字')
        if ok:
            self.le3.setText(str(num))


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

运行结果：