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Learning Perl/Tk
book

Learning Perl/Tk

by Nancy Walsh
January 1999
Beginner content levelBeginner
373 pages
9h 43m
English
O'Reilly Media, Inc.
Content preview from Learning Perl/Tk

16.5. Widget Existence

To determine if a widget has been created, use Exists($widget):

if (Exists($widget)) {
   ...
}

Note the uppercase "E" on this method. The Exists method is different from the built-in Perl exists method. Make sure you don't confuse the two.

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Publisher Resources

ISBN: 1565923146Supplemental ContentCatalog PageErrata