detect a click and drop on a line in flash

I have converted line to movieclip. Now I want to detect click and drag on line not on whole 开发者_Python百科movieclip how to add listener just to the line ?

Simple question and nobody knows ? On Google I can't find one single article just to do that.

man , a line is nothing but a piece of stroke. if you convert it as a movieClip , u can add event for that clip. but for the line inside the clip alone , how can you add an event? to me its not possible , if you got a solution please do post in here . . .