Problem with Python GUI checklist, Tkinter

[Mathew Coyle]

Hi all,

I am trying to create a checklist which allows users to select a specific feature of a dataset in a database, and export that feature out of the database to their PC. This is my first GUI attempt, and I don't imagine my issue is too complicated, mostly just my inexperience.

Everything seems to roll along fine, a few tweaks are still needed, but an issue I cannot resolve has come up. It seems that the checklist items are being selected and added twice to the list, once for a mouse button click, and again for a mouse button release. I thought it would be a simple tag or bind somewhere, like the Python Tk buttons, to limit the selection to the mouse button click only, but I cannot find it anywhere in the documentation.

I am using Python 2.6.5, Tk 8.5 and I've attached the code as it stands now.

Any assistance would be appreciated, thanks.

Mathew Coyle
GIS Analyst
Information Technology
Alberta-Pacific Forest Industries Inc.
Phone: 780.525.8556
Fax: 780.525.8388
E-mail: mathew.coyle at alpac.ca<mailto:mathew.coyle at alpac.ca>

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