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Author Topic: Reading attribute Value before insertion.  (Read 2151 times)

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Shade

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Reading attribute Value before insertion.
« on: March 20, 2006, 07:48:38 AM »
Is there a way of getting an attributes value from a block before the block has been inserted or do I have to insert the block first read the attributes value then erase the block and insert it again?

I wish to store the following info in the attributes of a block;
-Unit type = Metric or Imperial
-Layer group = Default layer placement

I am writing a lisp that will insert a block in the proper units and place that block on the layer I choose by default.

Any help would be appreciated...


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Kerry

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Re: Reading attribute Value before insertion.
« Reply #1 on: March 20, 2006, 08:10:09 AM »
Yes, you could read the tag values from the block in the BlockTable/blockCollection,

but, you could also change the scale and Layer after the INSERT is placed, which may be simpler.
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kdub, kdub_nz in other timelines.
Perfection is not optional.
Everything will work just as you expect it to, unless your expectations are incorrect.
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FengK

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Re: Reading attribute Value before insertion.
« Reply #2 on: March 21, 2006, 02:29:34 AM »
If the block definition is in the drawing, you can easily examine it.
(setq doc (vla-get-activedocument (vlax-get-acad-object)))
(setq blkDef (vla-item (vla-get-blocks doc) blkName))

If not, you can open the block drawing with ObjectDBX and step through the objects.  There should be many examples of using ObjectDBX in Autodesk ng.

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