python基本的信号与槽函数的使用 信号发射 槽函数接收

Posted 2021-11-10 皓月盈江

# 熟悉信号与槽的使用
# -*- coding: utf-8 -*-
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys


# 创建信号类
class QTypeSigner(QObject):
    # 定义一个信号
    sendmsg = pyqtSignal(object)

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

    def run(self):
        # 发射信号
        self.sendmsg.emit("发射信号")


# 创建槽类
class QTypeSlot(QObject):
    def __init__(self):
        super(QTypeSlot, self).__init__()

    def get(self, msg):
        print("QSlot get msg to" + msg)


if __name__ == "__main__":
    send = QTypeSigner()
    slot = QTypeSlot()

    # 绑定信号和槽
    print("绑定信号和槽")
    send.sendmsg.connect(slot.get)
    send.run()

    # 断开信号和槽
    print("断开信号和槽")
    send.sendmsg.disconnect(slot.get)
    send.run()

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