Python编程实例-PyQt5 GUI编程-输入对话框-QInputDialog

QInputDialog是一个预配置的对话框，带有一个文本字段和两个按钮，确定和取消。 用户单击 Ok 按钮或按 Enter 后，父窗口收集文本框中的输入。用户输入可以是数字、字符串或列表中的项目。 还显示提示用户他应该做什么的标签。

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

class MainWindow(QWidget):
    def __init__(self, parent=None):
        super().__init__()

        layout = QFormLayout()
        self.btn = QPushButton("Choose from list")
        self.btn.clicked.connect(self.getItem)

        self.le = QLineEdit()
        layout.addRow(self.btn, self.le)
        self.btn1 = QPushButton("get name")
        self.btn1.clicked.connect(self.gettext)

        self.le1 = QLineEdit()
        layout.addRow(self.btn1, self.le1)
        self.btn2 = QPushButton("Enter an integer")
        self.btn2.clicked.connect(self.getint)

        self.le2 = QLineEdit()
        layout.addRow(self.btn2, self.le2)
        self.setLayout(layout)
        self.setWindowTitle("Input Dialog demo")

    def getItem(self):
        items = ("C", "C++", "Java", "Python")

        item, ok = QInputDialog.getItem(
            self, "select input dialog", "list of languages", items, 0, False
        )

        if ok and item:
            self.le.setText(item)

    def gettext(self):
        text, ok = QInputDialog.getText(self, 'Text Input Dialog', 'Enter your name:')

        if ok:
            self.le1.setText(str(text))

    def getint(self):
        num, ok = QInputDialog.getInt(self, "integer input dualog", "enter a number")

        if ok:
            self.le2.setText(str(num))


def main():
    app = QApplication(sys.argv)
    ex = MainWindow()
    ex.show()
    sys.exit(app.exec())


if __name__ == '__main__':
    main()

示例实现了输入对话框功能。 顶层窗口有三个按钮。 它们的 clicked() 信号通过连接的插槽弹出 InputDialog。

items = ("C", "C++", "Java", "Python")
item, ok = QInputDialog.getItem(
   self, "select input dialog", "list of languages", items, 0, False
)
   if ok and item:
      self.le.setText(item)
		
   def gettext(self):
      text, ok = QInputDialog.getText(self, 'Text Input Dialog', 'Enter your name:')
      if ok:
         self.le1.setText(str(text))
			
   def getint(self):
      num,ok = QInputDialog.getInt(self,"integer input dualog","enter a number")
		
      if ok:
         self.le2.setText(str(num))

运行结果如下：