104 lines
3.4 KiB
Python
104 lines
3.4 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import ctypes
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from PyQt5.QtCore import QThread, pyqtSignal
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from PyQt5.QtWidgets import QWidget, QVBoxLayout, QProgressBar, QPushButton
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import win32con
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from win32process import SuspendThread, ResumeThread
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# Created on 2018年3月13日
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# author: Irony
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# site: https://github.com/892768447
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# email: 892768447@qq.com
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# file: 多线程使用.a
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# description:
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__Author__ = 'By: Irony\nQQ: 892768447\nEmail: 892768447@qq.com'
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__Copyright__ = 'Copyright (c) 2018 Irony'
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__Version__ = 1.0
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class Worker(QThread):
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valueChanged = pyqtSignal(int) # 值变化信号
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handle = -1
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def run(self):
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try:
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self.handle = ctypes.windll.kernel32.OpenThread( # @UndefinedVariable
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win32con.PROCESS_ALL_ACCESS, False, int(QThread.currentThreadId()))
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except Exception as e:
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print('get thread handle failed', e)
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print('thread id', int(QThread.currentThreadId()))
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for i in range(1, 101):
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print('value', i)
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self.valueChanged.emit(i)
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QThread.sleep(1)
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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layout = QVBoxLayout(self)
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self.progressBar = QProgressBar(self)
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self.progressBar.setRange(0, 100)
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layout.addWidget(self.progressBar)
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self.startButton = QPushButton('开启线程', self, clicked=self.onStart)
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layout.addWidget(self.startButton)
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self.suspendButton = QPushButton(
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'挂起线程', self, clicked=self.onSuspendThread, enabled=False)
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layout.addWidget(self.suspendButton)
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self.resumeButton = QPushButton(
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'恢复线程', self, clicked=self.onResumeThread, enabled=False)
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layout.addWidget(self.resumeButton)
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# 当前线程id
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print('main id', int(QThread.currentThreadId()))
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# 子线程
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self._thread = Worker(self)
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self._thread.finished.connect(self._thread.deleteLater)
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self._thread.valueChanged.connect(self.progressBar.setValue)
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def onStart(self):
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print('main id', int(QThread.currentThreadId()))
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self._thread.start() # 启动线程
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self.startButton.setEnabled(False)
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self.suspendButton.setEnabled(True)
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def onSuspendThread(self):
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if self._thread.handle == -1:
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return print('handle is wrong')
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ret = SuspendThread(self._thread.handle)
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print('挂起线程', self._thread.handle, ret)
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self.suspendButton.setEnabled(False)
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self.resumeButton.setEnabled(True)
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def onResumeThread(self):
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if self._thread.handle == -1:
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return print('handle is wrong')
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ret = ResumeThread(self._thread.handle)
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print('恢复线程', self._thread.handle, ret)
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self.suspendButton.setEnabled(True)
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self.resumeButton.setEnabled(False)
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def closeEvent(self, event):
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if self._thread.isRunning():
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self._thread.quit()
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# 强制
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# self._thread.terminate()
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del self._thread
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super(Window, self).closeEvent(event)
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if __name__ == '__main__':
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import sys
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import os
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print('pid', os.getpid())
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from PyQt5.QtWidgets import QApplication
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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