CODEWITHSUNDEEP
pythonimagegtkpygtk
user7331387
user7331387

Reputation: 53

Python GTK Image, Change Image Constantly gets none image after a many times

I have a Gtk.Image widget in a window, and it must change image after a time. it run in a thread of function below

    def dinChangeBg(self,_Timing):
        tm.sleep(int(_Timing))

##      Verifica se a janela ainda existe
        if not(self.Runing):
            thread.exit()

        bg = "image/background"+str(self.bgIndex)+".jpg"

        if not (os.path.isfile(bg)):
            print(bg,"bg inesistente")
            self.bgIndex = 1

            bg = "image/background"+str(self.bgIndex)+".jpg"

        if(os.path.isfile(bg)):
            print("new bac", bg)

            pbuf = GdkPixbuf.Pixbuf.new_from_file_at_scale(bg, self.Window.get_size()[0],self.Window.get_size()[1], preserve_aspect_ratio=False)
            self.image.clear()
            self.image.set_from_pixbuf(pbuf)
            self.bgIndex += 1


        self.dinChangeBg(int(_Timing))

the thread call is:

_thread.start_new_thread(dinChangeBg,(60,))

after a time it no change more the image and a image desappears, the print continues to show a image location if it exists .

someone have a idea of the error?

Upvotes: 0

Views: 209

Answers (1)

andlabs
andlabs

Reputation: 11588

You cannot call GTK+ functions from another thread. Your thread will have to tell the GTK+ thread to both create the pixbuf and change the image; you do the telling with GLib.idle_add(). Or, if this is an animation that is simple enough that you can forego the second thread entirely, use GLib.timeout_add() to run the code on a timeout.

Upvotes: 1

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