pyqt5 信号槽_python使用qthread时,signal = pyqtsignal()可以是list类型吗

目录

多线程进度条示例

worker例子：

pyqtSignal 的数据类型可以 int str,list

getimageSignal = pyqtSignal(QImage, list)

previewSignal = pyqtSignal([int,str],[str])

多线程进度条示例

#!/usr/bin/python
# coding:UTF-8
from PyQt5 import QtWidgets, QtCore
import sys
from PyQt5.QtCore import *
import time
 
 
# 继承QThread
class Runthread(QtCore.QThread):
    #  通过类成员对象定义信号对象
    _signal = pyqtSignal(str)
 
    def __init__(self):
        super(Runthread, self).__init__()
 
    def __del__(self):
        self.wait()
 
    def run(self):
 
        for i in range(100):
            time.sleep(0.1)
            self._signal.emit(str(i))  # 注意这里与_signal = pyqtSignal(str)中的类型相同
 
 
class Example(QtWidgets.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        # 按钮初始化
        self.button = QtWidgets.QPushButton('开始', self)
        self.button.move(120, 80)
        self.button.clicked.connect(self.start_login)  # 绑定多线程触发事件
 
        # 进度条设置
        self.pbar = QtWidgets.QProgressBar(self)
        self.pbar.setGeometry(50, 50, 210, 25)
        self.pbar.setValue(0)
 
        # 窗口初始化
        self.setGeometry(300, 300, 300, 200)
        self.show()
 
        self.thread = None  # 初始化线程
 
    def start_login(self):
        # 创建线程
        self.thread = Runthread()
        # 连接信号
        self.thread._signal.connect(self.call_backlog)  # 进程连接回传到GUI的事件
        # 开始线程
        self.thread.start()
 
    def call_backlog(self, msg):
        self.pbar.setValue(int(msg))  # 将线程的参数传入进度条
 
 
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    myshow = Example()
    myshow.show()
    sys.exit(app.exec_())

worker例子：

PyQt - 使用多线程避免界面卡顿_pyqt 多线程-CSDN博客

还有一多，多对一的高级玩法，可以参考：

https://blog.csdn.net/broadview2006/article/details/80132757