直接从 Qthread PyQt 5 更改 GUI [英] Changing GUI directly from Qthread PyQt 5

问题描述

我已将 GUI 链接发送到我的 Thread 工作线程，并直接从 QThread 更新 GUI 信息.喜欢这里:

Hi i have send to my Thread worker link to GUI and update GUI info directly from QThread. Like here:

class Worker(QThread):
  def __init__(self, ui):
    QThread.__init__(self)
    self.running = False
    self.ui = ui

  def run(self):
    self.running = True
    while self.running:
        info = self.check_info()
        rows = len(info)
        self.ui.tableWidget.setRowCount(rows)
        self.ui.tableWidget.setColumnCount(6) 
        ...

在主 QMainWindow 我只是添加

def __init__(self, parent=None):
    .......
    self.myworker = Worker(self.ui)
    .....

这样的解决方案在 PyQt5 中是不是很糟糕?我是 PyQt 的新手.谢谢.如果我的解决方案不好，请帮助我修复它.

Is such solution very bad in PyQt5? I am new in PyQt. Thx. If my solution is bad plz help me to fix it.

推荐答案

你不能也不能从辅助线程更新 GUI，你必须通过信号和槽来完成:

You can not and can not update the GUI from a secondary thread, you must do it through signals and slots:

为此，我们将通过 pyqtSignal() 类创建一个信号，我们将指明参数的类型，然后将其连接到我们想要的插槽，如下所示:

For this we are going to create a signal through the class pyqtSignal(), and we will indicate the types of arguments, then we connect it to the slot that we want, as I show below:

主题:

class Worker(QThread):
    list_of_dict_signals = pyqtSignal(list)
    str_signal = pyqtSignal(str)
    def __init__(self,  parent=None):
        QThread.__init__(self, parent)
        self.running = False

    def run(self):
        self.running = True
        while self.running:
            info = self.check_info()
            self.list_of_dict_signals.emit(info)
            self.str_signal.emit("Requesting info")

界面:

def __init__(self, parent=None):
    .......
    self.myworker = Worker(self)
    self.myworker.list_of_dict_signals.connect(self.onDataFromThread)
    self.myworker.str_signal.connect(self.ui.statusbar.showMessage)
    self.myworker.start()

def onDataFromThread(self, info):
    rows = len(info)
    self.ui.tableWidget.setRowCount(rows)
    ...

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