Please help me about what does this error mean?

Hi all.

I 'm trying to write a lisp routine for some purposes that it creates a file with the name i specified for it in the path "D:\myname.txt".

this routine is not complete yet and i tested it before completing.

As i run this routine, it create the file and then returns this error:

; error: bad argument type: FILE nil

Is there anyone who can tell me what does this error mean?

How i can solve this error?

Please post an excerpt from your code for debug.

Regards,

Thanks msasu.

I found the reason of producing this error.

I have a "while loop" after creation of the file.

in this loop i have this prompt line:

 
(princ "\n << ...some statements... AND THEN PRESS "ENTER": >> ")

I found that existing of "ENTER" is the reason.

Now i have no problem.

You need to use an escape char seq:

\"ENTER\"

Should format it like this:

(princ "\n << ...some statements... AND THEN PRESS [color=Blue]\[/color]"ENTER[color=Blue]\[/color]": >> ")

Regards,

I 'm So tahnkful Lee Mac and msasu.

I agree with Lee and msasu. However, you can also use the ascii character.

eg.

(princ (strcat "\n << ...some statements... AND THEN PRESS " (chr 34) "ENTER" (chr 34) ": >> "))

I keep this for reference:

Thanks Alanjt.

I 'm interested in different ways but similar actions.

Thanks Alanj.

I 'm interested in different ways but similar actions.

No problem.

I would and do do it the way Lee and msasu suggested, but the ascii characters are very useful to know. I refer to this from time to time.

You can also find out an ascii character by using the ascii command.

eg.

Command: (ascii "3")
51

and chr to to in reverse.

eg.

Command: (chr 51)
"3"

I would try to use your good offer.

Thanks.

You're welcome. Enjoy.