as3 droptarget

I'm doing a drag and drop interaction.  The very basic code is

function mouseDown(event:MouseEvent):void
{
	event.currentTarget.startDrag();
}


function mouseReleased(event:MouseEvent):void
{
	event.currentTarget.stopDrag();
	if (event.currentTarget.dropTarget != null)
	{		
		event.currentTarget.x = event.currentTarget.dropTarget.parent.x;
		event.currentTarget.y = event.currentTarget.dropTarget.parent.y;
	}	
}

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I'll have several draggable objects and droptargets.  Now the problem I have is if a given droptarget already has something dropped on it, it shouldn't allow anything else to be dropped on it ie. "disabled".  If I drag the object off of it, that particular target would need to be "enabled" again.  Haven't come up with any idea on how to do this.

Oh yeah, all the draggable objects are able to be dropped on all of the droptargets.  I'll evaluate whether the correct objects have been dropped on the correct targets later.
moglieAsked:
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dgofmanConnect With a Mentor Commented:
If you are using DragManager class

http://livedocs.adobe.com/livecycle/8.2/programLC/common/langref/mx/managers/DragManager.html

You should control all your drop target(s) by acceptDragDrop API

http://livedocs.adobe.com/flex/3/html/dragdrop_7.html
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moglieAuthor Commented:
Not using Flex or any ui components.  The draggable objects and droptargets are just movieclips.
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dgofmanConnect With a Mentor Commented:
But DragManager is not for Flex is ActionScript 3 class.

Check this example its pure AS

http://icodesnippet.com/snippet/actionscript-3/as3-drag-n-drop
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dgofmanCommented:
Check this tutorial it will tell you basic steps

http://www.youtube.com/watch?v=ALqGYMsRWxw
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dgofmanCommented:
and in step 2 showing how to control drop target

http://www.youtube.com/watch?NR=1&v=1hR3CVIdfuY
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CarnouCommented:
Why not simply add a flag to the drop target that says there is something dropped in it? MovieClips are dynamic; you can create a new field and check to see if it exists and is set in your MouseDown event.
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CyanBlueCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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