これを行う 1 つの方法を次に示します。この例では、メソッドが呼び出されたときに子プロセスとして をmyThread
開始します。その信号はs信号に接続されています。は毎秒チェックし、次の場合にシグナルを送信します。timerThread
run
timeElapsed
timerThread
timeElapsed
timerThread
while
parent
isRunning
timeElapsed
True
#!/usr/bin/env python
#-*- coding:utf-8 -*-
import time
from PyQt4 import QtCore, QtGui
class timerThread(QtCore.QThread):
timeElapsed = QtCore.pyqtSignal(int)
def __init__(self, parent=None):
super(timerThread, self).__init__(parent)
self.timeStart = None
def start(self, timeStart):
self.timeStart = timeStart
return super(timerThread, self).start()
def run(self):
while self.parent().isRunning():
self.timeElapsed.emit(time.time() - self.timeStart)
time.sleep(1)
class myThread(QtCore.QThread):
timeElapsed = QtCore.pyqtSignal(int)
def __init__(self, parent=None):
super(myThread, self).__init__(parent)
self.timerThread = timerThread(self)
self.timerThread.timeElapsed.connect(self.timeElapsed.emit)
def run(self):
self.timerThread.start(time.time())
iterations = 3
while iterations:
print "Running {0}".format(self.__class__.__name__)
iterations -= 1
time.sleep(2)
class myWindow(QtGui.QWidget):
def __init__(self):
super(myWindow, self).__init__()
self.button = QtGui.QPushButton(self)
self.button.setText("Start Threading!")
self.button.clicked.connect(self.on_button_clicked)
self.label = QtGui.QLabel(self)
self.layout = QtGui.QVBoxLayout(self)
self.layout.addWidget(self.button)
self.layout.addWidget(self.label)
self.myThread = myThread(self)
self.myThread.timeElapsed.connect(self.on_myThread_timeElapsed)
self.myThread.finished.connect(self.on_myThread_finished)
@QtCore.pyqtSlot()
def on_button_clicked(self):
self.myThread.start()
@QtCore.pyqtSlot(int)
def on_myThread_timeElapsed(self, seconds):
self.label.setText("Time Elapsed: {0}".format(seconds))
@QtCore.pyqtSlot()
def on_myThread_finished(self):
print "Done"
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
app.setApplicationName('myWindow')
main = myWindow()
main.show()
sys.exit(app.exec_())