ActionScript 3.0 :: Undo Last Action In Drawing?

Jan 12, 2011

I have a problem with functions, i'm creating a painting app in flash as3. i want to draw two different style a pen and rectangle.

When i draw pen style in first frame there is no problem, but when i click rectangle style in second frame it is drawing with both style. How can i stop or kill other function?

How do I make both of the not drawing. And How can i undo my last action in drawing?

[code]...

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