Re: Keeping a Tkinter GUI alive during a long running process

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From	Grant Edwards <invalid@invalid.invalid>
Newsgroups	comp.lang.python
Subject	Re: Keeping a Tkinter GUI alive during a long running process
Date	Sat, 29 Dec 2012 18:47:39 +0000 (UTC)
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On 2012-12-21, Kevin Walzer <kw@codebykevin.com> wrote:

> I maintain a Tkinter application that's a front-end to to a package 
> manger, and I have never been able to find a way to keep the app from 
> locking up at some point during the piping in of the package manager's 
> build output into a text widget. At some point the buffer is overwhelmed 
> and the app simply can't respond anymore, or writes data to the text 
> widget after locking up for a period.
>
> I've long used the typical Tkinter design pattern of opening a pipe to 
> the external command, and letting it do its thing. However, after a 
> time, this locks up the app. If I try to throttle the buffer with some 
> combination of "update" or "after" or "update_idletasks," that keeps the 
> data flowing, but it comes in too slowly and keeps flowing in long after 
> the external process has terminated.

Isn't there a way in Tkinter to have a file descriptor produce an
event whenever it becomes readble?

http://stackoverflow.com/questions/3348757/how-to-make-tkinter-repond-events-while-waiting-socket-data

-- 
Grant Edwards               grant.b.edwards        Yow! ... he dominates the
                                  at               DECADENT SUBWAY SCENE.
                              gmail.com

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Keeping a Tkinter GUI alive during a long running process Kevin Walzer <kw@codebykevin.com> - 2012-12-20 22:04 -0500
  Re: Keeping a Tkinter GUI alive during a long running process "Russell E. Owen" <rowen@uw.edu> - 2012-12-26 12:46 -0800
  Re: Keeping a Tkinter GUI alive during a long running process Grant Edwards <invalid@invalid.invalid> - 2012-12-29 18:47 +0000

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