topic Re: Can you give instructions during user input with ssget? in Visual LISP, AutoLISP and General Customization Forum

Can you give instructions during user input with ssget?

Darrick.Earley — Tue, 23 Mar 2021 17:28:46 GMT

I am very new to creating AutoLISP routines and trying to figure them out. From what I've picked up and learned so far, I know I can give an instruction that shows up in the command bar when using the getpoint function when I write it like this:
(setq pt1 (getpoint "Select starting point:"))

With that "Select starting point:" displays in the command bar for the user.

However, I can't seem to do the same with ssget. If I try something similar (subbing getpoint for ssget in the example above):
(setq ss1 (ssget "Select the specific objects:"))

AutoCAD gives me "bad ssget mode string".

Is there a way to display instructions for a user when using ssget?

TIA for any help.

Re: Can you give instructions during user input with ssget?

ВeekeeCZ — Tue, 23 Mar 2021 17:53:09 GMT

Not as simple as with (entsel) but possible. There is the nomutt system variable.

But it's kinda dangerous game - you really need to make sure that you set it back to zero - do you know how to use the *error* function? If not, better hands-off the nomutt. Once you keep it on, you won't see any prompts on the command-line. Lots of people better not using it at all.

(setvar 'nomutt 1)
(princ "\nSelect viewport: ")
(setq s (ssget "_+.:E:S" '((0 . "VIEWPORT"))))
(setvar 'nomutt 0)

Re: Can you give instructions during user input with ssget?

Darrick.Earley — Tue, 23 Mar 2021 18:00:05 GMT

Unfortunately, I do not know how to use the *error* function. I also still haven't learned some of the other functions mentioned in your answer (setvar and princ).

One thing I think I've learned from looking through other ssget posts in the forum is that the ":S" only gives the user a single click chance. Is that correct? If so, I don't think that would work as I would want to let the user select multiple objects and they would be scattered (so can't do a lasso selection).

Re: Can you give instructions during user input with ssget?

ВeekeeCZ — Tue, 23 Mar 2021 18:05:57 GMT

That was just an example. It works with simple (ssget) too.

Better then use the common approach:

(princ "\nSelect something extraordinary, ")

(ssget)

Re: Can you give instructions during user input with ssget?

Kent1Cooper — Tue, 23 Mar 2021 18:40:47 GMT

I usually put in a (prompt) to the user just before the (ssget) function, with a phrase ending in a comma so that (ssget)'s own Select objects: prompt [that you have no control over] sort of follows naturally, though unavoidably on a new line:

(prompt "\nTo do whatever it is you intend to do with them,")

(ssget '((0 . ......

Re: Can you give instructions during user input with ssget?

Darrick.Earley — Tue, 23 Mar 2021 19:25:04 GMT

Thank you both @ВeekeeCZ and @Kent1Cooper . Both those options are getting really close to what I'm hoping for. With both of those, it shows the instruction text just above the command bar as if it's a previously/recently used command. If that's the best I can get with my limited LISP understanding then that's fine.

What I am really hoping for is something that would say "Select all perimeter tubes:" in the command bar during the selection step instead of "Select objects:".

Re: Can you give instructions during user input with ssget?

Kent1Cooper — Tue, 23 Mar 2021 19:41:44 GMT

@Darrick.Earley wrote:

.... What I am really hoping for is something that would say "Select all perimeter tubes:" in the command bar during the selection step instead of "Select objects:".

Aren't we all...? Unfortunately, (ssget) doesn't have the option to spell out the prompt, the way the various (get...) functions do.

Re: Can you give instructions during user input with ssget?

Darrick.Earley — Tue, 23 Mar 2021 19:45:03 GMT

Ok. Well thank you for letting me know about the (prompt) option.