我正在尝试在GUI之外创建一个新的线程工作者。当我将QThread子类化时,它按预期工作,GUI不受影响。当我使用moveToThread技术时,我完全锁定了GUI。我假设我不小心将新线程放入主线程,但我不明白我正在做什么导致这一点。如何在不冻结主线程的情况下使start2函数工作?
from PySide import QtGui, QtCore
import sys
import time
class THREAD(QtCore.QThread):
def __init__(self):
super(THREAD, self).__init__()
def run(self):
time.sleep(5)
print "done"
class WORKER(QtCore.QObject):
def __init__(self):
super(WORKER, self).__init__()
def run(self):
time.sleep(5)
print "done"
class GUI(QtGui.QDialog):
def __init__(self):
super(GUI, self).__init__()
mainLayout = QtGui.QHBoxLayout()
self.setLayout(mainLayout)
start1Button = QtGui.QPushButton("Start1")
start2Button = QtGui.QPushButton("Start2")
mainLayout.addWidget(start1Button)
mainLayout.addWidget(start2Button)
start1Button.clicked.connect(self.start1)
start2Button.clicked.connect(self.start2)
def start1(self):
self.myThread = THREAD()
self.myThread.start()
def start2(self):
myWorker = WORKER()
myThread = QtCore.QThread()
myThread.start()
myWorker.moveToThread(myThread)
myWorker.run()
def main():
app = QtGui.QApplication(sys.argv)
ex = GUI()
ex.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
答案 0 :(得分:0)
首先,您需要保留对您创建的工作线程和线程的引用,否则只要start2()
返回就会收集垃圾。
其次,直接在myWorker.run()
内调用start2()
意味着它将在主线程中执行。因此,您必须安排在线程启动后稍后调用它。通常的方法是使用信号。
因此,您的代码应如下所示:
def start2(self):
self.myWorker = WORKER()
self.myThread2 = QtCore.QThread()
self.myWorker.moveToThread(self.myThread2)
self.myThread2.started.connect(self.myWorker.run)
self.myThread2.start()