Drag and drop is a very popular animation in flash. its commonly use to create a learning application where elements needs to be associated.

In this basic drag and drop tuturial i will expain the process to creat a drag and drop in flash8 actionscript2.0

1. creata a new flash document

2. create a new shape, use whatever you want.

3. convert this sape to a movie clip

4. set registration point to centre

5. give it instance name circle.

6. on the first frame of the timeline enter this actionscript :

circle.onPress=function(){

starDrag(this,true)

}

circle.onRelease=function(){

this.stopDrag();

}

actionscript explaination :

if circle is press start drag if it released stop dragging

this is startDrag documentation in flash8

startDrag function

startDrag(target:Object, [lock:Boolean, left:Number, top:Number, right:Number, bottom:Number])

Makes the target movie clip draggable while the movie plays. Only one movie clip can be dragged at a time. After a startDrag() operation is executed, the movie clip remains draggable until it is explicitly stopped by stopDrag() or until a startDrag() action for another movie clip is called.
Parameters

target:Object - The target path of the movie clip to drag.

lock:Boolean [optional] - A Boolean value specifying whether the draggable movie clip is locked to the center of the mouse position (true ) or locked to the point where the user first clicked the movie clip (false ).

left,top,right,bottom:Number [optional] - Values relative to the coordinates of the movie clip’s parent that specify a constraint rectangle for the movie clip.

source fla :

http://siubie.zxq.net/wordpress/wp-content/circle.fla