執行緒的終止問題一直是可比較頭疼的問題，今天找到了乙個比較好的例子，分享給大家
valuechanged = pyqtsignal(int) # 值變化訊號
handle = -1
def run(self):
try:
# 這個目前我沒弄明白這裡寫法
self.handle = ctypes.windll.kernel32.openthread( # @undefinedvariable
win32con.process_all_access, false, int(qthread.currentthreadid()))
except exception as e:
print('get thread handle failed', e)
print('thread id', int(qthread.currentthreadid()))
# 迴圈傳送訊號
for i in range(1, 101):
print('value', i)
self.valuechanged.emit(i)
qthread.sleep(1)
class window(qwidget):
def __init__(self, *args, **kwargs):
super(window, self).__init__(*args, **kwargs)
# 垂直布局
layout = qvboxlayout(self)
self.progressbar = qprogressbar(self)
self.progressbar.setrange(0, 100)
layout.addwidget(self.progressbar)
self.startbutton = qpushbutton('開啟執行緒', self, clicked=self.onstart)
layout.addwidget(self.startbutton)
self.suspendbutton = qpushbutton('掛起執行緒', self, clicked=self.onsuspendthread, enabled=false)
layout.addwidget(self.suspendbutton)
self.resumebutton = qpushbutton('恢復執行緒', self, clicked=self.onresumethread, enabled=false)
layout.addwidget(self.resumebutton)
self.stopbutton = qpushbutton('終止執行緒', self, clicked=self.onstopthread, enabled=false)
layout.addwidget(self.stopbutton)
# 當前執行緒id
print('main id', int(qthread.currentthreadid()))
# 子執行緒
self._thread = worker(self)
self._thread.finished.connect(self._thread.deletelater)
self._thread.valuechanged.connect(self.progressbar.setvalue)
def onstart(self):
print('main id', int(qthread.currentthreadid()))
self._thread.start() # 啟動執行緒
self.startbutton.setenabled(false)
self.suspendbutton.setenabled(true)
self.stopbutton.setenabled(true)
def onsuspendthread(self):
if self._thread.handle == -1:
return print('handle is wrong')
ret = suspendthread(self._thread.handle)
print('掛起執行緒', self._thread.handle, ret)
self.suspendbutton.setenabled(false)
self.resumebutton.setenabled(true)
def onresumethread(self):
if self._thread.handle == -1:
return print('handle is wrong')
ret = resumethread(self._thread.handle)
print('恢復執行緒', self._thread.handle, ret)
self.suspendbutton.setenabled(true)
self.resumebutton.setenabled(false)
def onstopthread(self):
self.startbutton.setenabled(false)
self.suspendbutton.setenabled(false)
self.resumebutton.setenabled(false)
ret = ctypes.windll.kernel32.terminatethread( # @undefinedvariable
self._thread.handle, 0)
print('終止執行緒', self._thread.handle, ret)
self.stopbutton.setenabled(false)
def closeevent(self, event):
if self._thread.isrunning():
self._thread.quit()
# 強制
# self._thread.terminate()
del self._thread
super(window, self).closeevent(event)
if __name__ == '__main__':
import sys
import os
print('pid', os.getpid())
w = window()
w.show()
並新增建立執行緒的**
self._thread = worker(self)
self._thread.finished.connect(self._thread.deletelater)
self._thread.valuechanged.connect(self.progressbar.setvalue)
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