打开另一个wx.python框架以阻止主UI

根据mikedriscoll的回答和评论,下面是从另一个面板运行的线程任务的示例。

线程使用事件向第二个面板(其父面板)报告。这允许更新进度条。

使用 wx.GetApp().Yield() 可能有点过时,但我一直觉得它是可靠的。

import time
import wx
from threading import Thread

import wx.lib.newevent
progress_event, EVT_PROGRESS_EVENT = wx.lib.newevent.NewEvent()

class ThreadFrame(wx.Frame):

    def __init__(self, title, parent=None):
        wx.Frame.__init__(self, parent=parent, title=title)
        panel = wx.Panel(self)
        self.btn = wx.Button(panel,label='Stop Long running process', size=(200,30), pos=(10,10))
        self.btn.Bind(wx.EVT_BUTTON, self.OnExit)
        self.progress = wx.Gauge(panel,size=(300,10), pos=(10,50), range=300)

        #Bind to the progress event issued by the thread
        self.Bind(EVT_PROGRESS_EVENT, self.OnProgress)
        #Bind to Exit on frame close
        self.Bind(wx.EVT_CLOSE, self.OnExit)
        self.Show()

        self.mythread = TestThread(self)
        #Enable the GUI to be responsive by briefly returning control to the main App
        while self.mythread.isAlive():
            time.sleep(0.1)
            wx.GetApp().Yield()
            continue

        try:
            self.OnExit(None)
        except:
            pass

    def OnProgress(self, event):
        self.progress.SetValue(event.count)
        #or for indeterminate progress
        #self.progress.Pulse()

    def OnExit(self, event):
        if self.mythread.isAlive():
            self.mythread.terminate() # Shutdown the thread
            self.mythread.join() # Wait for it to finish
        self.Destroy()

class TestThread(Thread):
    def __init__(self,parent_target):
        Thread.__init__(self)
        self.parent = parent_target
        self.stopthread = False
        self.time = time.time()
        self.start()    # start the thread

    def run(self):
        # A loop that will run for 5 minutes then terminate
        while self.stopthread == False:
            curr_loop = int(time.time() - self.time)
            if curr_loop < 300:
                time.sleep(1)
                evt = progress_event(count=curr_loop)
                #Send back current count for the progress bar
                try:
                    wx.PostEvent(self.parent, evt)
                except: # The parent frame has probably been destroyed
                    self.terminate()
            else:
                self.terminate()

    def terminate(self):
        self.stopthread = True

class MyPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.text_count = 0
        self.parent=parent
        btn = wx.Button(self, wx.ID_ANY, label='Start Long running process', size=(200,30), pos=(10,10))
        btn.Bind(wx.EVT_BUTTON, self.Thread_Frame)
        btn2 = wx.Button(self, wx.ID_ANY, label='Is the GUI still active?', size=(200,30), pos=(10,50))
        btn2.Bind(wx.EVT_BUTTON, self.AddText)
        self.txt = wx.TextCtrl(self, wx.ID_ANY, style= wx.TE_MULTILINE, pos=(10,90),size=(400,100))

    def Thread_Frame(self, event):
        frame = ThreadFrame(title='Threaded Task', parent=self.parent)

    def AddText(self,event):
        self.text_count += 1
        txt = self.txt.GetValue()
        txt += "More text " + str(self.text_count)+"\n"
        self.txt.SetValue(txt)

class MainFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, title='Main Frame', size=(600,400))
        panel = MyPanel(self)
        self.Show()


if __name__ == '__main__':
    app = wx.App(False)
    frame = MainFrame()
    app.MainLoop()

在wxPython应用程序中打开新的框架/窗口不需要线程。您只需要创建一个子类 wx.Frame wx.Dialog 或者 wx.MessageDialog .

import wx


class OtherFrame(wx.Frame):
    """
    Class used for creating frames other than the main one
    """

    def __init__(self, title, parent=None):
        wx.Frame.__init__(self, parent=parent, title=title)
        self.Show()


class MyPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent)

        btn = wx.Button(self, label='Create New Frame')
        btn.Bind(wx.EVT_BUTTON, self.on_new_frame)

    def on_new_frame(self, event):
        frame = OtherFrame(title='SubFrame', 
                           parent=wx.GetTopLevelParent(self))


class MainFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, title='Main Frame')
        panel = MyPanel(self)
        self.Show()


if __name__ == '__main__':
    app = wx.App(False)
    frame = MainFrame()
    app.MainLoop()

在本例中,我将另一帧的父帧设置为 MainFrame 使用实例 wx.GetTopLevelParent(self) . 为子帧设置父帧的好处是,如果我关闭主帧,它将导致其他帧也被关闭。