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Learning Perl/Tk by Nancy Walsh

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10.14. Identifying Parts of a Scale

You can find out what part of the scale a coordinate resides in by using the identifymethod:

$value = $scale->identify(x, y);

The identify method returns a string containing one of the following values: "slider", "trough1", "trough2", or an empty string (if the coordinates don't refer to any of these parts).

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