python UI冻结

Question

在按下"开始"按钮启动计数器后按下停止按钮停止计数器后,我正在尝试制作基本功能,但是在我开始处理之后,它看起来只是计数线程正在工作,并且无法按下停止按钮

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt4 import QtGui, QtCore
from test.test_sax import start
import time
from threading import Thread
import threading
class Example(QtGui.QWidget):
    x = 1
    bol = True
    def __init__(self):
        super(Example, self).__init__()


        self.qbtn = QtGui.QPushButton('Quit', self)

        self.qbtn.resize(self.qbtn.sizeHint())
        self.qbtn.move(50, 50)
        self.qbtn2 = QtGui.QPushButton('Start', self)

        self.qbtn2.resize(self.qbtn2.sizeHint())
        self.qbtn2.move(150, 50)

        self.qbtn.clicked.connect(self.stopCounter)
        self.qbtn2.clicked.connect(self.startUI)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Quit button')
        self.show()
    def stopCounter(self):
        Example.bol = False

    def startUI(self):
        Example.bol = True
        thread = Thread(self.counterr())

    def counterr(self):
        x = 0
        while Example.bol:
            print x
            x += 1



if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    a = Example()
    sys.exit(app.exec_())

谢谢

Answer 1

现在,在创建线程之前调用slow函数.试试这个:

thread = Thread(target=self.counterr)
thread.start()

在Qt应用程序中,您可能还会考虑QThread可以运行自己的事件循环并使用信号和插槽与主线程进行通信的类.