pyqt QTimer，QThread例子学习

# -*- coding: utf-8 -*-

# python:2.x

__author__ = 'Administrator'

from PyQt4.QtGui import *

from PyQt4.Qt import *

from PyQt4.QtCore import *

from start import Ui_Form

import sys

class Example(QDialog,Ui_Form):

def __init__(self,parent=None):

super(Example, self).__init__(parent)

self.setupUi(self)

#边框风格

self.timenum.setFrameStyle(QFrame.StyledPanel|

QFrame.Plain)

self.time=QTimers()

self.start.clicked.connect(self.start1)

self.stop.clicked.connect(self.stop1)

self.connect(self.time, SIGNAL("updateTime()")

, self.updateTime)

self.setWindowFlags(Qt.WindowMinimizeButtonHint)#禁止改变窗口的大小

def updateTime(self):

self.timenum.setText(u'时间为{0}'.format(QString.number(self.num)))

self.num+=1

def stop1(self):

self.time.stop1()

self.stop.setEnabled(False)

self.start.setEnabled(True)

self.timenum.setText(u'请输入时间0秒')

def start1(self):

self.num=0

self.start.setEnabled(False)

self.stop.setEnabled(True)

self.time.start()

from time import *

class QTimers(QThread):

def __init__(self, parent=None):

super(QTimers,self).__init__(parent)

self.stoped=False

self.mutex=QMutex()#提供的是线程之间的访问顺序化

def run(self):

with QMutexLocker(self.mutex):#QMutexLocker ( QMutex * mutex )

self.stoped=False

while True:

if self.stoped:

return

self.emit(SIGNAL('updateTime()'))#发送信号

sleep(1)

def stop1(self):

with QMutexLocker(self.mutex):

self.stoped=True

def isStoped(self):

with QMutexLocker(self.mutex):

return self.stoped

app =QApplication(sys.argv)

QApplication.setQuitOnLastWindowClosed(False)

x = Example()

x.show()

sys.exit(app.exec_())

如图: