调用函数wx.框架从Python中的不同类

Question

有非常相似的问题，但我要么不理解，要么他们没有完全回答。我看到的两个是this one和{a2}。我有一个wxpython图形用户界面在运行。按一个按钮，我运行四个不同的线程（运行时间很长的任务）。我已经能够实现这一点没有问题——线程运行，我仍然可以使用GUI。在

每个线程（TestThread0，TestThread1，等等）向文件中写入一个变量（但永远不会完成它的循环——无限循环）。每隔一段时间（比如每20秒），我想在我的主GUI应用程序中运行一个函数（WriteThis）(wx.框架)它读取这个文件及其值/变量。我的问题是如何在线程仍在运行时在GUI部分运行这个函数？当我试图运行TMainForm.WriteThis()时，我的错误就起作用了。在

以下是我的代码（非常简短）：

class TMainForm(wx.Frame):

    def __init__(self, *args, **kwds):


            kwds["style"] = wx.DEFAULT_FRAME_STYLE ^ wx.RESIZE_BORDER
            wx.Frame.__init__(self, *args, **kwds)

            self.Splitter = wx.SplitterWindow(self, -1)#, style=wx.SP_NOSASH)

            self.Panel1 = wx.Panel(self.Splitter, -1)          
            self.Panel3 = wx.Panel(self.Splitter, -1)

            self.Splitter.SplitVertically(self.Panel1,self.Panel3,400)

            ... and so on to set up GUI

    # Press button in GUI to run threads
    def OnAnalyzePress(self,event): 
        TestThread0()
        time.sleep(2)
        TestThread1()
        time.sleep(2)
        TestThread2()
        time.sleep(2)
        TestThread_output

    # This is the function I want to run from TestThread_output class below
    def WriteThis(self):
        print 'Running'
        # I will read file and update GUI here (Threads keep running though)

# Example thread (all the others are the same)
class TestThread0(Thread):

    def __init__(self):
        Thread.__init__(self)
        self.start()    # start the thread

    def run(self):
        # This is my "infinite loop" function that writes variable/values to a file
        MyLongRunningFunction.SomeFunction()

# This is the thread I want to run that executes some function in wx.FRAME every 20 seconds
class TestThread_output(Thread):

    def __init__(self):
        Thread.__init__(self)
        self.start()    # start the thread

    def run(self):

        for i in range(1000):
            TMainForm.WriteThis() # !!! This is where my error is !!! I want to run function called "WriteThis"
            time.sleep(20)

class TApplication(wx.App):
    def OnInit(self):

            wx.InitAllImageHandlers()
            MainForm = TMainForm(None, -1,"")
            self.SetTopWindow(MainForm)

            MainForm.Show()
            return 1

if __name__ == "__main__":
    Application = TApplication(0)
    Application.MainLoop()

谢谢你的帮助！！在

Answer 1

class TestThread_output(Thread):
    def __init__(self,mainForm):
        Thread.__init__(self)
        self.mainForm = mainForm #save reference to the mainFrame GUI
        self.start()    # start the thread
    def run(self):
        for i in range(1000):
            wx.CallAfter(self.mainForm.WriteThis) #since its a diff thread you need callafter(or calllater)
            #I dont think you can do self.mainForm.WriteThis()
            time.sleep(20)

class TMainForm(wx.Frame):
    ...
    def OnAnalyzePress(self,event): 
        TestThread0()
        time.sleep(2)
        TestThread1()
        time.sleep(2)
        TestThread2()
        time.sleep(2)
        TestThread_output(self) #<- pass in this as mainFrame argument to thread constructor