public _rotation : Number

The rotation of the button, in degrees, from its original orientation. Values from 0 to 180 represent clockwise rotation; values from 0 to -180 represent counterclockwise rotation. Values outside this range are added to or subtracted from 360 to obtain a value within the range. For example, the statement my_btn._rotation = 450 is the same as my_btn._rotation = 90.

Example

The following example rotates two buttons on the Stage. Create two buttons on the Stage called control_btn and my_btn. Make sure that my_btn is not perfectly round, so you can see it rotating. Then enter the following ActionScript in Frame 1 of the Timeline:

var control_btn:Button;
var my_btn:Button;
control_btn.onRelease = function() {
    my_btn._rotation += 10;
};

Now create another button on the Stage called myOther_btn, making sure it isn't perfectly round (so you can see it rotate). Enter the following ActionScript in Frame 1 of the Timeline.

var myOther_btn:Button;
this.createEmptyMovieClip("rotater_mc", this.getNextHighestDepth());
rotater_mc.onEnterFrame = function() {
    myOther_btn._rotation += 2;
};

See also

_rotation (MovieClip._rotation property), _rotation (TextField._rotation property)