[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2015-05-24 Thread Terry J. Reedy
Terry J. Reedy added the comment: Thanks for the report. -- ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: htt

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2015-05-24 Thread Jackmoo
Jackmoo added the comment: Hi there, recently I also encounter this in windows(7), and my python program occasionally crash and the windows pops 'appcrash' message with tcl8.5.dll error c05 (access violation). And this end up related to thread safe problem described as above. Since in my

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2013-03-08 Thread Terry J. Reedy
Terry J. Reedy added the comment: I have somewhat arbitrary selected #16823 as the issue turned into a tkinter and threads doc issue. I added a note there about mentioning the use of queue. -- resolution: -> duplicate status: open -> closed superseder: -> Python quits on running tkint

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-28 Thread Terry J. Reedy
Terry J. Reedy added the comment: There are other gui libraries with Python interfaces that you can look at. I agree that something in doc about how to feed data from multiple threads would be nice. -- nosy: +terry.reedy type: crash -> behavior versions: +Python 3.2 _

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-28 Thread Scott M
Scott M added the comment: Alright. More digging turned up the Tkinter "after" function, aka WM_TIMER for Windowy people like me, and that plus a nonblocking queue get() gets all my drawing operations back into the mainLoop() thread. Voilà, no more crashes. Let me suggest that page one, sente

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-28 Thread Scott M
Scott M added the comment: OK, now all calls to Tkinter are funneled to a single thread, through a queue. (Technically there are two threads in Tkinter - one is parked in .mainloop(), the other makes a call to Canvas.create_line and a call to Label.config.) Different crash, but still a crash.

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-27 Thread Christoph Gohlke
Christoph Gohlke added the comment: Tkinter is not thread safe. You are changing UI elements from a thread that is not the main thread. Use a Queue as described at http://effbot.org/zone/tkinter-threads.htm. -- nosy: +cgohlke ___ Python tracker

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-27 Thread Scott M
Scott M added the comment: To make this more interesting, I'm trying to push for adoption of Python at a scripting tool where I work, and I uncovered this crasher in example code I was about to hand out, under the heading of "look how easy Python is". For obvious reasons I'm holding off on ha

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-27 Thread Brian Curtin
Changes by Brian Curtin : -- nosy: +brian.curtin ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.py

[issue11029] Crash, 2.7.1, Tkinter and threads and line drawing

2011-01-27 Thread Scott M
New submission from Scott M : Running on dual core Windows XP. The function should draw a parabolicish shape for each click on launch. But if you click Launch over and over, very fast, you get bizarre crashes instead: Python.exe has encoutered a problem, yadda. tcl85.dll. It rarely takes many