[issue12723] Provide an API in tkSimpleDialog for defining custom validation functions

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

Adding an option would also be a reasonable feature request, but I think exposing _QueryDialog would be a more general solution, since it would apply to more than just strings.

While not backward incompatible, either of these is a new feature and so can only go into 3.3.

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stage:  -> needs patch
title: tkSimpleDialog.askstring shouldn't allow empty string input -> Provide an API in tkSimpleDialog for defining custom validation functions
versions: +Python 3.3 -Python 2.7

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