Locking transparent pixels like in phothoshop?

Hello,
I am new to A.I ( I have the cs5 version I think)
is it possible to lock transparent pixels of a layer like in phothoshop in A.I?
Thank's in advanced.
Best regards

Use a mask.
Either a clipping mask or an opacity mask.
In Illustrator CS5: draw the mask shape. Then click on the Draw inside button and use what ever drawing tool you like to draw directly in the mask.
See manual on clipping masks and draw inside mode.

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    Message was edited by: JJMack

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