問題描述

正如我在標題中提到的.我該怎么做?

As I Mentioned in Title. How can i do something like this?

class Main(QWidget):

        def __init__(self):

                super().__init__()

        def StartButtonEvent(self):

                self.test = ExecuteThread()
                self.test.start()

        def MyEvent(self):

                #MainThreadGUI

class ExecuteThread(QThread):

        def run(self):

                # A lot of work

                # Signal to main thread about finishing of job = mainthread will perform MyEvent

我在這里找到了一些教程 pyqt4 在線程到主線程中的插槽

I found some tutorials here pyqt4 emiting signals in threads to slots in main thread

這里 從 pyQt Qthread 發出信號

但它似乎在 PyQt5 中不起作用:/

But it seems it does not working in PyQt5 :/

推薦答案

只需使用 QThread.finished 信號在這里.如果您完成線程，它將自動執行.當然你也可以根據需要定義自己的自定義信號.

Just use the QThread.finished signal here. It will be executed automatically if you finish your thread. Of course you can also define your own custom signal if you want.

from PyQt5.QtCore import pyqtSignal

class Main(QWidget):

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

    def StartButtonEvent(self):
        self.test = ExecuteThread()
        self.test.start()
        self.test.finished.connect(thread_finished)
        self.test.my_signal.connect(my_event)

    def thread_finished(self):
        # gets executed if thread finished
        pass

    def my_event(self):
        # gets executed on my_signal 
        pass


class ExecuteThread(QThread):
    my_signal = pyqtSignal()

    def run(self):
        # do something here
        self.my_signal.emit()
        pass

這篇關于PyQt5 - 如何從工作線程發出信號以通過 GUI 線程調用事件的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！