如何传输信号,以检测按钮是否被单击



我想问一下是否可以使用信号/插槽来传输信息,例如:"这个按钮被点击了吗?

我在这里准备了一些代码....

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

class Worker(QObject):
    def __init__(self, parent=None):
        super(Worker, self).__init__(parent)
    @pyqtSlot(str, str, int, add_one_more_signal)
    def onJob(self, strA, strB, int1, add_one_more_signal):
        print(strA, strB, int1)
        # if the signal detects the btn1 was clicked:
        # print("button 1 is clicked; button 2 is not clicked")
        # if the signal detects the btn2 was clicked:
        # print("button 1 is not clicked; button 2 is clicked")

class MyApp(QWidget):
    signal = pyqtSignal(str, str, int,  add_one_more_signal)
    def __init__(self, parent= None):
        super(MyApp, self).__init__(parent)
        self.initUI()
    def initUI(self):
        self.btn1 = QPushButton("start 1", self)
        self.btn2 = QPushButton("start 2", self)
        self.btn1.clicked.connect(self.start)
        self.btn2.clicked.connect(self.start)
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.btn1)
        self.layout.addWidget(self.btn2)
        self.setLayout(self.layout)
        self.show()
    def start(self):
        otherClass = Worker()
        self.signal.connect(otherClass.onJob)
        self.signal.emit("foo", "baz", 10, self.btn1.clicked(True) or self.btn2.clicked(True)) # How to write this line?
if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MyApp()
    window.show()
    sys.exit(app.exec_())

请不要误会我的意思。我以我非常罕见的知识知道如何实现程序目的。我只想知道,如何传输信号,它检测按钮是否被点击。 --说实话,我也想知道信号+插槽的功能。

在我的代码中有两个按钮。它们共享相同的子功能。(正如我提到的,只是为了这个问题。单击其中一个参数时,三个参数将从 MyApp 类传输到辅助角色类。

现在我想介绍第四个参数,我也在上面的代码中写了这个参数。第四个参数只执行一项工作,即发送信息,无论是否单击按钮。

所以我的问题是:如果可行,如何编写代码?

一种可能的解决方案是发送显示按钮的文本,为此,第四个参数必须是 str类型 ,要获得发出信号的对象 我们使用的信号 sender() ,在这种情况下,sender()将是按下的对象,然后我们获取文本并发送它。

class Worker(QObject):
    def __init__(self, parent=None):
        super(Worker, self).__init__(parent)
    @pyqtSlot(str, str, int, str)
    def onJob(self, strA, strB, int1, text):
        print(strA, strB, int1)
        if text == "start 1":
            print("button 1 is clicked")
        elif text == "start 2":
            print("button 2 is clicked")

class MyApp(QWidget):
    signal = pyqtSignal(str, str, int, str)
    def __init__(self, parent= None):
        super(MyApp, self).__init__(parent)
        self.initUI()
    def initUI(self):
        self.btn1 = QPushButton("start 1", self)
        self.btn2 = QPushButton("start 2", self)
        self.btn1.clicked.connect(self.start)
        self.btn2.clicked.connect(self.start)
        self.layout = QVBoxLayout()
        self.layout.addWidget(self.btn1)
        self.layout.addWidget(self.btn2)
        self.setLayout(self.layout)
        self.show()
    def start(self):
        otherClass = Worker()
        btn = self.sender()
        self.signal.connect(otherClass.onJob)
        self.signal.emit("foo", "baz", 10, btn.text()) 

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