Specifications

Extend the MovieClip class to create a new class 265
4. In the Name text box, enter myShape.
5. In the AS 2.0 Class text box, enter Drag.
Click OK. This associates the movie clip with the Drag class that
you’ll create.
6. Using the Property inspector, assign the movie clip an instance name,
then save the FLA file.
7. Create an ActionScript file by selecting File > New > ActionScript File
(Not Flash Document). Save the document with the name Drag.as, in
the same location where you saved Shape.fla.
8. In the ActionScript file that you just created, create a new class and
constructor called
Drag:
class Drag extends MovieClip
{
function Drag ()
{
onPress=doDrag;
onRelease=doDrop;
}
}
9.
Define private methods in the class that use the existing movie clip
methods,
startDrag() and stopDrag():
class Drag extends MovieClip
{
function Drag()
{
onPress=doDrag;
onRelease=doDrop;
}
private function doDrag():Void
{
this.startDrag();
}
private function doDrop():Void
{
this.stopDrag()
}
}
10.
Save the ActionScript file.
NOTE
A finished sample file of the document you just created, named
handson3.fla, is located in your finished files folder. For the path, see “Set
up your workspace” on page 256.