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Konstantin
Asked:2022-09-16 03:26:29 +0000 UTC2022-09-16 03:26:29 +0000 UTC

如何通过 sender() 找出没有文本的信号的按钮发送者？

  • 772

通常我一直使用示例来识别发件人按钮：

import sys
from PySide2.QtWidgets import QMainWindow, QPushButton, QApplication

class Example(QMainWindow):

    def __init__(self):
        super().__init__()

        self.initUI()


    def initUI(self):

        btn1 = QPushButton("Button 1", self)
        btn1.move(30, 50)

        btn2 = QPushButton("Button 2", self)
        btn2.move(150, 50)

        btn1.clicked.connect(self.buttonClicked)
        btn2.clicked.connect(self.buttonClicked)

        self.statusBar()

        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Event sender')
        self.show()


    def buttonClicked(self):

        sender = self.sender()
        print(sender)
        self.statusBar().showMessage(sender.text() + ' was pressed')


if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

但是我有这样一个问题，如果
btn1 = QPushButton("", self)和btn1 = QPushButton("", self)，
如何理解按下了哪个按钮？

在此处输入图像描述

python

1 个回答

  1. Best Answer

    objectName:QString

    此属性包含此对象的名称

    像这样试试

    import sys
#from PySide2.QtWidgets import QMainWindow, QPushButton, QApplication
from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication


class Example(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Event sender')
        self.statusBar()

        self.initUI()

    def initUI(self):
        btn1 = QPushButton("", self, objectName='btn1')
        btn1.move(30, 50)

        btn2 = QPushButton("", self, objectName='btn2')
        btn2.move(150, 50)

        btn1.clicked.connect(self.buttonClicked)
        btn2.clicked.connect(self.buttonClicked)

    def buttonClicked(self):
        sender = self.sender()
        print(sender)
        self.statusBar().showMessage(sender.objectName() + ' was pressed')


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

    在此处输入图像描述

    • 1

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