Topic: Lisp to open a note pad

[Lee Mac]

well i found the problem i guess i took out one of the 2 "\" int the C:\\TimeTracker.txt and it worked

You will need to use two backslashes or a single forward slash to specify the filepath since a single backslash is used in LISP as an escape character.

[alanjt]

That's a new one for me, thanks. 

I use it, pbrush and word all the time.

[CadFrank]

Well this code works.

Code: [Select]

(defun c:timet ( / file )
        (startapp "notepad" "C:\Timetracker.txt")
   
(princ)
)
And this one doesn't

Code: [Select]

(defun c:timet ( / file )
        (startapp "notepad" "C:\\Timetracker.txt")
   
(princ)
)
But anyways i'm not sure I understand what you mean.

[CadFrank]

Well this code works.

Code: [Select]

(defun c:timet ( / file )
        (startapp "notepad" "C:\Timetracker.txt")
   
(princ)
)
And this one doesn't

Code: [Select]

(defun c:timet ( / file )
        (startapp "notepad" "C:\\Timetracker.txt")
   
(princ)
)
But anyways i'm not sure I understand what you mean.

You will need to use two backslashes or a single forward slash to specify the filepath since a single backslash is used in LISP as an escape character.

[CadFrank]

Oh!!  how the heck those the Quote Work!! I repeated myself now :S

[alanjt]

Code: [Select]

(defun c:timet (/ file)
  (if (or (setq file (findfile "c:\\Timetracker.txt"))
          (setq file (getfiled "Select Text File to Open" "c:\\" "txt" 16))
      )
    (startapp "notepad" file)
    (alert "No file for you!")
  )
  (princ)
)

[jaydee]

I used command "start"
to initial window default app to open a particular file extension.
this also avoid having application version issue.

Code: [Select]

(command "start" "c:\\Timetracker.txt"")


[zanze02]

Code: [Select]

;;;-----------------------------------------------------------------------------
;; function Start default application for opening files
;;;-----------------------------------------------------------------------------
(defun OpenFile (filename / shell)
  (vl-load-com)
  (setq shell (vla-getinterfaceobject (vlax-get-acad-object)"Shell.Application"))
  (vlax-invoke-method shell 'Open filename)
  (vlax-release-object shell)
)

Code: [Select]

(OpenFile (findfile "YourFilename.txt"))

[Lee Mac]

CadFrank,

What is the filepath of your .txt file?

But anyways i'm not sure I understand what you mean.

You will need to use two backslashes or a single forward slash to specify the filepath since a single backslash is used in LISP as an escape character.

Escape Character.

The backslash is used as an escape character to give a sequence of characters an alternative meaning, e.g.:

Code: [Select]

"\n" = new line character
"\t" = tab character

...

Hence, if you need to use a literal backslash you need to mark it as a literal by prefixing it with another backslash ("\\").

Test these expressions in your console to understand:

Code: [Select]

(princ "C:\timetracker.txt")
(princ "C:\\timetracker.txt")