Question

我从QtDesigner获取了一个小部件，并通过pyside将.ui文件转换为.py文件。现在我希望该小部件组织一个数据库和一个独立的threading.Thread（在同一个模块中）来打开和读取数据库并发送到UDP。事实上，我知道如何分开处理所有这些，但是当汇集它时很难。我应该在我的widget类中使用thread作为类：

def setupUi(self, Form):
...
def retranslateUi(self, Form):
...
if __name__ == "__main__":
...
Form.show()

并且还有人可以举例说明使用该小部件运行另一个线程吗？

提前致谢

Answer 1

我举一个例子，在PySide / PyQt中使用QThreads来实现多线程和与其他Widgets的通信。我自己用它。

from PySide import QtCore

class Master(QtCore.QObject):

    command = QtCore.Signal(str)

    def __init__(self):
        super().__init__()

class Worker(QtCore.QObject):

    def __init__(self):
        super().__init__()

    def do_something(self, text):
        print('in thread {} message {}'.format(QtCore.QThread.currentThread(), text))

if __name__ == '__main__':

    app = QtCore.QCoreApplication([])

    # give us a thread and start it
    thread = QtCore.QThread()
    thread.start()

    # create a worker and move it to our extra thread
    worker = Worker()
    worker.moveToThread(thread)

    # create a master object and connect it to the worker
    master = Master()
    master.command.connect(worker.do_something)

    # call a method of the worker directly (will be executed in the actual thread)
    worker.do_something('in main thread')

    # communicate via signals, will execute the method now in the extra thread
    master.command.emit('in worker thread')

    # start the application and kill it after 1 second
    QtCore.QTimer.singleShot(1000, app.quit)
    app.exec_()

    # don't forget to terminate the extra thread
    thread.quit()

pyside小部件使用threading.Thread类运行

1 个答案: