thumbPosition

Type

property

Summary

Specifies the current position of a scrollbar's draggable thumb.

Syntax

set the thumbPosition of <scrollbar> to <number>

Description

Use the thumbPosition to move a scrollbar's draggable thumb when the content it controls is scrolled, or to check where the thumb has been dragged in order to scroll the content.

The thumbPosition is the location of the top edge (for vertical scrollbars) or left edge (for horizontal scrollbars) of the scrollbar thumb, using the scale set by the scrollbar's startPosition and endPosition properties.

If the style of the scrollbar is scale, the maximim thumbPosition, when the scrollbar thumb is all the way to the bottom (for a vertical scrollbar) or right (for a horizontal scrollbar), is the endValue.

If the style of the scrollbar is scrollbar or progress, the maximum value of the thumbPosition is the scrollbar's endValue minus the thumbSize.

Examples

set the thumbPosition of scrollbar 1 to 400

set the thumbPosition of me to (3 * the thumbSize of me)

Related

message: scrollbarLineInc, scrollbarBeginning

object: scrollbar

property: endValue, properties, thumbSize, startValue

glossary: control, scrollbar thumb, property

keyword: scrollbar, default

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile