Creating Complex Entities

Entity Data Functions

Anonymous Blocks

 

AutoLISP Developer's Guide > Using the AutoLISP Language > Using AutoLISP to Manipulate AutoCAD Objects > Object Handling > Entity Data Functions > 

Working with Blocks

There is no direct method for an application to check whether a block listed in the BLOCK table is actually referenced by an insert object in the drawing. You can use the following code to scan the drawing for instances of a block reference:

(ssget "x" '((2 . "BLOCKNAME")) )

You must also scan each block definition for instances of nested blocks.