Chris Hare wrote:
> Thanks Peter. I threw away what I started with and merged your code into
> my class:
>
> class externalLoopDisplay:
>
> def show(self):
> main.logging.debug("externalLoopDisplay.show:","start")
>
> self.window = Tk()
>
> self.btnClose = Button(self.window, text="Close",
> command=self.window.destroy,
> bg=backColor,highlightbackground=warnColor,
> highlightcolor=okColor) self.btnClose.grid(row=0, column=2)
> self.label = Label(self.window) self.label.grid(row=1, column=0,
> columnspan=3)
> dirName = getRadarPath() + "/net" + str(netNumber.get()) # e.g.
> .../Radar/net17/net17-YYYYMMDDHHMMSS.gif
> self.imagefiles = glob.glob(dirName + "/*.gif")
> self.imagefiles = cycle(self.imagefiles)
> self.window.after_idle(self.next_image)
>
> def next_image(self):
> imagefile = next(self.imagefiles)
> image = Image.open(imagefile)
>
> w, h = image.size
> image = image.resize((600, 550*h//w))
>
> self.label.image = self.label["image"] =
> ImageTk.PhotoImage(image=image) # <==== bails here
> self.window.title("Now showing %s" % os.path.basename(imagefile))
>
> self.window.after(2000, next_image)
>
>
> I marked where the code bails with an error saying pyimage2 doesn't exist.
> All of the images exist and worked just fine with your standalone script.
>
> Suggestions?
Google says you are calling Tkinter.Tk() more than once where you should
instead use Tkinter.Toplevel(). As you didn't post that part of the code
it's hard to verify, but when I add a second
root = tk.Tk()
to my example script I get a very similar exception:
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1413, in __call__
return self.func(*args)
File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 498, in callit
func(*args)
File "cycle_image.py", line 16, in next_image
label.image = label["image"] = ImageTk.PhotoImage(image=image)
File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1212, in __setitem__
self.configure({key: value})
File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1205, in configure
return self._configure('configure', cnf, kw)
File "/usr/lib/python2.6/lib-tk/Tkinter.py", line 1196, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
TclError: image "pyimage1" doesn't exist
By the way: for future posts please remember to cut and paste the traceback,
don't paraphrase the error message.
Peter
--
http://mail.python.org/mailman/listinfo/python-list
