信号与槽N对N

···
from PyQt5.QtCore import *

class NNSignal(QObject):

定义一个信号

signal1 = pyqtSignal()
# 发送3个参数的信号
signal2 = pyqtSignal(int)
signal3 = pyqtSignal()

def init(self):
super().init()
self.signal1.connect(self.signal_call1)
self.signal1.connect(self.signal_call11)
self.signal2.connect(self.signal1)
self.signal3.connect(self.signal_call1)

self.signal1.emit()
self.signal2.emit(10) # signal1关联的是信号1，所以触发的还是信号1
self.signal3.emit()

解除关联

self.signal1.disconnect(self.signal_call1)
self.signal1.disconnect(self.signal_call11)
self.signal2.disconnect(self.signal1)

self.signal1.connect(self.signal_call1)
self.signal2.connect(self.signal_call2)

self.signal1.emit()
self.signal2.emit(100)

def signal_call1(self):
print("signal1 emit")

def signal_call11(self):
print("signal1 call 11")

def signal_call2(self, val):
print("signal2 emit, value=", val)

if name == 'main':
NNSignal()