Question

我能够结合槽和信号为简单的例子。然而，我想的信号绑定到对象的任何实例 - 说任何QPushButton - 和让槽确定哪些对象是发送者

下面是我的简单结合显式QPushButton实例example：

import sys
from PyQt5.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)

        btn3 = QPushButton("Button 3", self)
        btn3.move(30, 150)

        btn4 = QPushButton("Button 4", self)
        btn4.move(150, 150)

        # This code ties the slots and signals together
        # clicked is the SIGNAL
        btn1.clicked.connect(self.buttonClicked)
        btn2.clicked.connect(self.buttonClicked)
        btn3.clicked.connect(self.buttonClicked)
        btn4.clicked.connect(self.buttonClicked)

        self.statusBar()

        self.setGeometry(300, 300, 300, 230)
        self.setWindowTitle('Event sender')
        self.show()


    def buttonClicked(self):
        sender = self.sender()
        self.statusBar().showMessage(sender.text() + ' was pressed firmly')

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

    sys.exit(app.exec_())

该代码不符合PEP8，仅用于示例目的。

Answer 1

我不知道我是否正确理解了您，但是请尝试以下示例：

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

class Example(QMainWindow):
    def __init__(self, data):
        super().__init__()
        self.data = data
        self.statusBar()
        self.initUI()

    def initUI(self):
        for b in self.data:
            btn = QPushButton(b[0], self)    
            btn.move(b[1], b[2])
            btn.clicked.connect(self.buttonClicked)

    def buttonClicked(self):
        sender = self.sender()
        self.statusBar().showMessage(sender.text() + ' was pressed firmly')

data = [["Button 1",  30,  50],
        ["Button 2", 150,  50],
        ["Button 3",  30, 150],
        ["Button 4", 150, 150] ]

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example(data)
    ex.show()
    ex.setGeometry(300, 300, 300, 230)
    ex.setWindowTitle('Event sender')    
    sys.exit(app.exec_())

PyQt5-如何将信号绑定到对象类型而不是对象实例？

1 个答案: