from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication

from PyQt5.QtWidgets import *

from PyQt5.QtCore import *

import time

#继承QThread

class Mythread(QThread):

# 定义信号,定义参数为str类型

breakSignal = pyqtSignal(int)

def __init__(self, parent=None):

super().__init__(parent)

# 下面的初始化方法都可以，有的python版本不支持

# super(Mythread, self).__init__()

def run(self):

#要定义的行为，比如开始一个活动什么的

for i in(1，1000)：

print(i)

self.breakSignal.emit(i)

if __name__ == '__main__':

app = QApplication([])

dlg = QDialog()

dlg.resize(400, 300)

dlg.setWindowTitle("自定义按钮测试")

dlgLayout = QVBoxLayout()

dlgLayout.setContentsMargins(40, 40, 40, 40)

btn = QPushButton('测试按钮')

dlgLayout.addWidget(btn)

dlgLayout.addStretch(40)

dlg.setLayout(dlgLayout)

dlg.show()

def chuli(a):

# dlg.setWindowTitle(s)

btn.setText(str(a))

# 创建线程

thread = Mythread()

# # 注册信号处理函数

thread.breakSignal.connect(chuli)

# # 启动线程

thread.start()

dlg.exec_()

app.exit()