[Pythonmac-SIG] Python TkAqua, Tkinter bug

[Kevin Walzer]

davelist at mac.com wrote:
> I am not certain where the problem is or who to report it to, but  
> there is a bug in TkAqua, Tkinter, or possibly OS X's windowing  
> system. I am using a simple module on top of Tkinter for teaching an  
> intro programming course. When I click the mouse in the Tkinter  
> window, it often reports the wrong coordinates for the click most of  
> the time. If I use idle and first click on the Tk Console window and  
> then in the graphical window it seems to work. If I don't click in the  
> Tk Console window or start Python from the Terminal, it almost always  
> reports wrong values.
> 
> I am running Leopard now and tried both the built-in Python 2.5 and  
> installing the version from python.org. Some of my students who are  
> using Tiger report the same issue - I don't recall problems last year  
> when using this on Tiger, but it's possible. On Windows, the  
> coordinates are always correct.
> 
> The graphics.py module built on top of Tkinter is available at:
> 
> http://mcsp.wartburg.edu/zelle/python/
> 
> A simple example that shows the problem is:
> 
> from graphics import *
> win = GraphWin('test', 800, 800)
> pt = win.getMouse()
> print pt.getX(), pt.getY()
> 
> After clicking in the top left corner, it is clearly the wrong answer  
> (it should be near 0, 0 depending on how accurate your click is).
> 
> Any ideas on where the problem is, who to notify, etc.?
> 
> Thanks,
> Dave

Are you using the built-in Tk that comes with OS X? It's ancient (8.4.7 
on Tiger, and not updated for Leopard). Try installing a more recent 
version, such as 8.4.16, from ActiveState and see if that solves the 
problem.

-- 
Kevin Walzer
Code by Kevin
http://www.codebykevin.com