topic Re: Selecting a block inside the table and updating value in Visual LISP, AutoLISP and General Customization Forum

Selecting a block inside the table and updating value

BranoFRXKW — Tue, 21 Jan 2025 00:00:58 GMT

I’m new to Lisp and looking for some guidance on a problem I’m trying to solve.

I have a block in my drawing named NOTE SHEET 02. This block serves as a drawing note and contains a numbered circle (NOTE CIRCLE) inside autocad table. The number in the circle reflects the block’s suffix (in this case, 02 → 2).

If there is no block named NOTE SHEET 01 inside the drawing, i want to rename NOTE SHEET 02 to NOTE SHEET 01 and update the NOTE CIRCLE block inside the table to change its number from 2 to 1.

I have no idea how to access the NOTE CIRCLE block inside the AutoCAD table and update its value in lisp.

I’d greatly appreciate any advice. Thanks!

Re: Selecting a block inside the table and updating value

Sea-Haven — Tue, 21 Jan 2025 02:52:44 GMT

You can get at the attribute in a couple of ways, the 1st is to use NENTSEL and pick the attribute in the table this exposes that attribute directly and you can change its value. See code below.

The second is to get the cell and the object inside then work through the object and change the attribute number. This is maybe more useful in a big table.

(defun c:wow ( / obj str) (setq obj (vlax-ename->vla-object (car (nentsel "\nPick object ")))) (setq str (getstring "\nEnter new number ")) (vlax-put obj 'Textstring str) (command "regen") (princ) )