Flash CS3 Documentation

Using ActionScript 3.0 Components > Using the UI Components > Using the UIScrollBar

Using the UIScrollBar

The UIScrollBar component allows you to add a scroll bar to a text field. You can add a scroll bar to a text field while authoring, or at run time with ActionScript. To use the UIScrollBar component, create a text field on the Stage and drag the UIScrollBar component from the Components panel to any quadrant of the text field's bounding box.

If the length of the scroll bar is smaller than the combined size of its scroll arrows, it does not display correctly. One of the arrow buttons becomes hidden behind the other. Flash does not provide error checking for this. In this case it is a good idea to hide the scroll bar with ActionScript. If the scroll bar is sized so that there is not enough room for the scroll box (thumb), Flash makes the scroll box invisible.

The UIScrollBar component functions like any other scroll bar. It contains arrow buttons at either end and a scroll track and scroll box (thumb) in between. It can be attached to any edge of a text field and used both vertically and horizontally.

For information on the TextField, see the TextField class in the ActionScript 3.0 Language and Components Reference.

Related topics

• User interaction with the UIScrollBar
• UIScrollBar parameters
• Creating an application with the UIScrollBar

Flash CS3