Changing arrow head of a dimension

Hello everybody,

i have 3 questions to put.

First : i want to write a lisp program which can change the arrow head of a dimension, by simply click on that dimension.

Second: it is possible to create a lisp/vlisp program to change/switch AutoCAD profiles?

Third: i need a program to change automatically to HATCH layer when i make a hatch. There is possible to adapt this program to automatically change layers in correspondence with AutoCAD commands (ex: TEXT to layer TEXT, DIM to layer DIMS, etc).

Thank you very much,
Lucian.

 

Arrowhead sizes are dependent on dimscale variable. Your lsp routine would have to change the variable.

 

i've try with dimoverride command (with dimsah on) but there is no changes to dimension graphically.

Command:
DIMOVERRIDE
Enter dimension variable name to override or [Clear overrides]: DIMBLK1
Enter new value for dimension variable <ClosedFilled>: dotsmall

Enter dimension variable name to override:

Select objects: 1 found

Select objects:
....

and nothing.

where is the mistake?

Thanks,
Lucian.

 

Hi lucian,I have a script for edit dimension of arrow head,try this

; eas is stand for edit dim arrow head size dimension
; Design by Ade Suharna <>
; 28 September 2004
; program no. 91/09/2004
; Edit by Ade Suharna 05/10/2004 1).
(defun c:eas (/ ent opt)
(vl-load-com)
(while ; 1).
(setq ent
(vlax-ename->vla-object
(car
(entsel "\nSELECT A DIMENSION: ")))
ent1 (rtos (vlax-get-property ent "ArrowheadSize"))
opt
(getstring
(strcat "\nENTER NEW SCALE FACTOR" "<" ent1 ">" ": ")))
(vla-put-ArrowheadSize ent opt)
)
(princ)
)

 

Does it have to be in LSP or can it be in VBA?
Reason being, I know more about VBA than I do LSP.

 

See if you can find XL-TOGL.lsp (among Cadalyst Magazine's available
downloads, I think). It's from back in 1999 or so. It contains two
routines, for turning on and for turning off the extension lines of a
dimension. It determines whether you've picked closer to the first or
second extension line, and changes the extension line suppression variable
for that end of the dimension, and updates it. You could probably easily
adjust it to override the DIMBLK(1) or (2) variable, instead.

If you can't find it, I can post it -- I "fixed" their original to deal
better with conditions where the distance from the origins to the dimension
line is large compared to the dimensioned distance (it had a tendency to
change the wrong end sometimes). I think they replaced it with the fixed
version, but they may have refined it further since, if it's still
downloadable there.