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June 5, 2021 11:24
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| import sys | |
| import time | |
| from PyQt5.QtCore import (QCoreApplication, QObject, QRunnable, QThread, | |
| QThreadPool, pyqtSignal) | |
| # Subclassing QThread | |
| # http://qt-project.org/doc/latest/qthread.html | |
| class AThread(QThread): | |
| def run(self): | |
| count = 0 | |
| while count < 5: | |
| time.sleep(1) | |
| print("A Increasing") | |
| count += 1 | |
| # Subclassing QObject and using moveToThread | |
| # http://blog.qt.digia.com/blog/2007/07/05/qthreads-no-longer-abstract | |
| class SomeObject(QObject): | |
| finished = pyqtSignal() | |
| def long_running(self): | |
| count = 0 | |
| while count < 5: | |
| time.sleep(1) | |
| print("B Increasing") | |
| count += 1 | |
| self.finished.emit() | |
| # Using a QRunnable | |
| # http://qt-project.org/doc/latest/qthreadpool.html | |
| # Note that a QRunnable isn't a subclass of QObject and therefore does | |
| # not provide signals and slots. | |
| class Runnable(QRunnable): | |
| def run(self): | |
| count = 0 | |
| app = QCoreApplication.instance() | |
| while count < 5: | |
| print("C Increasing") | |
| time.sleep(1) | |
| count += 1 | |
| app.quit() | |
| def using_q_thread(): | |
| app = QCoreApplication([]) | |
| thread = AThread() | |
| thread.finished.connect(app.exit) | |
| thread.start() | |
| sys.exit(app.exec_()) | |
| def using_move_to_thread(): | |
| app = QCoreApplication([]) | |
| objThread = QThread() | |
| obj = SomeObject() | |
| obj.moveToThread(objThread) | |
| obj.finished.connect(objThread.quit) | |
| objThread.started.connect(obj.long_running) | |
| objThread.finished.connect(app.exit) | |
| objThread.start() | |
| sys.exit(app.exec_()) | |
| def using_q_runnable(): | |
| app = QCoreApplication([]) | |
| runnable = Runnable() | |
| QThreadPool.globalInstance().start(runnable) | |
| sys.exit(app.exec_()) | |
| if __name__ == "__main__": | |
| #using_q_thread() | |
| #using_move_to_thread() | |
| using_q_runnable() |
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