Scrollbar Methods
In addition to configure
and cget, the following methods
are supported by the Scrollbar widget:
setChanges 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);
getReturns the latest arguments to
set.activateWith no arguments, returns the name of the current active element. With an argument of
arrow1,arrow2, orslider, changes the color of the specified element to the active foreground color and relief type.deltaGiven a number of pixels in the first argument, returns the fractional change needed to move the slider that amount.
fractionGiven 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.
identifyGiven an x,y coordinate as the first and second arguments, returns the name of the element at those coordinates.