PyQt5 - 信号：pyqtSignal 无方法连接

Question

此文档中的以下示例是在 sourceforge 上找到的 我遇到了一个错误。

from PyQt5.QtCore import pyqtSignal, pyqtSlot

 def setSignal():        
     signal = pyqtSignal()
     signal.connect(self.myAction)

 @QtCore.pyqtSlot()
 def myAction():
     print("signal triggered")

结果

AttributeError: 'PyQt5.QtCore.pyqtSignal' object has no attribute 'connect'

Answer 1

如您链接的文档中所述，需要在 class 级别定义信号：

class Foo(QObject):

    signal = pyqtSignal()

    def connectSignal():        
        self.signal.connect(self.myAction)

    @QtCore.pyqtSlot()
    def myAction():
        print("signal triggered")