如何在gtk3-python中执行后台任务？

Question

我有这个主线程：吉比from gi.repository import Gtk, Gdkimport Processimport gobjectclass gui():    def __init__(self):        self.window = Gtk.Window()        self.window.connect('delete-event', Gtk.main_quit)        self.box = Gtk.Box()        self.window.add(self.box)        self.label = Gtk.Label('idle')        self.box.pack_start(self.label, True, True, 0)        self.progressbar = Gtk.ProgressBar()        self.box.pack_start(self.progressbar, True, True, 0)        self.button = Gtk.Button(label='Start')        self.button.connect('clicked', self.on_button_clicked)        self.box.pack_start(self.button, True, True, 0)        self.window.show_all()        gobject.threads_init()        Gdk.threads_enter()        Gtk.main()        Gdk.threads_leave()    def working1():        self.label.set_text('working1')        t = Process.Heavy()        t.heavyworks1()         self.label.set_text('idle')     def on_button_clicked(self, widget):        Gdk.threads_enter()        working1()        Gdk.threads_leave()if __name__ == '__main__':    gui = gui()此代码将生成此gui： 我有第二个模块，它将执行逻辑。Process.pyimport threadingclass Heavy(threading.Thread):    def __init__(self):        threading.Thread.__init__(self)    def heavyworks1(self):        #doing heavy works1        #return result   def heavyworks2(self, *param):        #doing heavy works2        #return result当我执行此操作时，该操作有效，但是gui被冻结。怎么做呢？

Answer 1

我将代码更改为此：

from gi.repository import Gtk, Gdk, GLib

import Process

import gobject

import threading

class gui():

def __init__(self):

    self.window = Gtk.Window()

    self.window.connect('delete-event', Gtk.main_quit)

    self.box = Gtk.Box()

    self.window.add(self.box)

    self.label = Gtk.Label('idle')

    self.box.pack_start(self.label, True, True, 0)

    self.progressbar = Gtk.ProgressBar()

    self.box.pack_start(self.progressbar, True, True, 0)

    self.button = Gtk.Button(label='Start')

    self.button.connect('clicked', self.on_button_clicked)

    self.box.pack_start(self.button, True, True, 0)

    self.window.show_all()

    gobject.threads_init()

    GLib.threads_init()

    Gdk.threads_init()

    Gdk.threads_enter()

    Gtk.main()

    Gdk.threads_leave()

def init_progress(self, func, arg):

    self.label.set_text('working1')

    self.worker = threading.Thread(target=func, args=[arg])

    self.running = True

    gobject.timeout_add(200, self.update_progress)

    self.worker.start()

def update_progress(self):

    if self.running:

        self.progressbar.pulse()

    return self.running

def working(self, num):

    Process.heavyworks2(num)    

    gobject.idle_add(self.stop_progress)

def stop_progress(self):

    self.running = False

    self.worker.join()

    self.progressbar.set_fraction(0)

    self.label.set_text('idle') 

def on_button_clicked(self, widget):

    self.init_progress(self.working, 100000)

if __name__ == '__main__':

    gui = gui()

使用该代码，程序有时可以工作，但有时会出现此错误。

1。

**

Gtk:ERROR:/build/buildd/gtk+3.0-3.4.2/./gtk/gtktextview.c:3726:gtk_text_view_validate_onscreen: assertion failed: (priv->onscreen_validated)

Aborted (core dumped)

2。

*** glibc detected *** python: free(): invalid next size (fast): 0x09c9f820 ***

3。

Segmentation fault (core dumped)