Perl in a Nutshell, 2nd Edition

Scrollbar Methods

In addition to configure and cget, the following methods are supported by the Scrollbar widget:

set

Changes the viewable portion of the data, with the two arguments being numbers between 0 and 1 representing the portions of the data that will be visible.

$scrollbar->set(0.2,0.6);

get

Returns the latest arguments to set.

activate

With no arguments, returns the name of the current active element. With an argument of arrow1, arrow2, or slider, changes the color of the specified element to the active foreground color and relief type.

delta

Given a number of pixels in the first argument, returns the fractional change needed to move the slider that amount.

fraction

Given an x,y coordinate as the first and second arguments, returns a number between 0 and 1 representing the fraction of the scrollbar that the coordinate would fall under.

identify

Given an x,y coordinate as the first and second arguments, returns the name of the element at those coordinates.