pyqt5多線程-簡單例子

一、主要代碼邏輯

from PyQt5 import QtWidgets, QtCore
from testqt.TEST_QT_FROM import Ui_Dialog
import sys
from PyQt5.QtCore import *
import time


# 繼承QThread
class Runthread(QtCore.QThread):
    # python3,pyqt5與之前的版本有些不一樣
    #  通過類成員對象定義信號對象
    _signal = pyqtSignal(str)

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

    def __del__(self):
        self.wait()

    def run(self):
        print("run 666")
        self._signal.emit("run 666"); # 信號發送



class TestQtFromC(QtWidgets.QWidget, Ui_Dialog):
    text =""
    def __init__(self):
        super(TestQtFromC, self).__init__()
        self.setupUi(self)

    #click
    def timer_click(self):
        self.thread = Runthread() # 創建線程
        self.thread._signal.connect(self.callbacklog) # 連接信號
        self.thread.start() # 開始線程

    # callback
    def callbacklog(self, msg):
        self.text =self.text+time.strftime("%Y-%m-%d %H:%M:%S ", time.localtime())+msg+ "\n"
        print(self.text)
        # 回調數據輸出到文本框
        self.textEdit.setText(self.text);


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    mTestQtFromC = TestQtFromC()
    mTestQtFromC.show()
    sys.exit(app.exec_())

 

轉自：https://blog.csdn.net/iknownu/article/details/83790074