User Guide

586 Chapter 7: ActionScript for Flash

Description

Property; designates another movie clip to serve as the hit area for a movie clip. If the hitArea

property does not exist or is

null or undefined, the movie clip itself is used as the hit area. The

value of the

hitArea property may be a reference to a movie clip object.

You can change the

hitArea property at any time; the modified movie clip immediately takes on

the new hit area behavior. The movie clip designated as the hit area does not need to be visible; its

graphical shape, although not visible, is hit-tested. The

hitArea property can be read out of a

prototype object.

Example

The following example sets the circle_mc movie clip as the hit area for the square_mc movie

clip. Place these two movie clips on the Stage and test the document. When you click

circle_mc,

the

square_mc movie clip traces that it has been clicked.

square_mc.hitArea = circle_mc;

square_mc.onRelease = function() {

trace("hit! "+this._name);

};

You can also set the circle_mc movie clip visible property to false to hide the hit area for

square_mc.

circle_mc._visible = false;