return "error" code from standalone compile

[Ken Ray]

Wow... I've been using Livecode since its inception (and Revolution before that, and even MetaCard before *that*!), and I never knew this existed!

Just goes to show that there's always something new to learn about our favorite development tool. 

(I wonder if anyone's put together a "list of things Livecode can do that you probably didn't know about" ?)

:D


Ken Ray
Sons of Thunder Software, Inc.
Email: kray at sonsothunder.com
Website: https://www.sonsothunder.com


> On Dec 10, 2020, at 11:51 AM, Douglas A. Ruisaard via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> I use AUTOHOTKEY... as a fast, dirty way to "get stuff done" when I'm either too lazy or too rushed to do a "quality" job with Livecode.  It has a command called "Run" & "Runwait" ... which returns the calling program's (Livecode executable, in this case) return code into a predefined variable called "ErrorLevel" (how original!).  So a line in a AUTOHOTKEY script for this would look like:
> 
> 		cmd = c:\livecode\SomeLiveCode.exe
> 		RunWait, %cmd%,,UseErrorLevel
> 		exitcode := ErrorLevel
> 		if (exitcode > 1)
> 
> Autohotkey takes some getting used to but I think it's a handy addition to development projects.. since AHK scripts can be compiled into executables, themselves.
> 
> My 4.5 cents
> 
> Douglas Ruisaard
> 
>    Trilogy Software
>      (250) 573-3935
> 
> 
> -----Original Message-----
> From: use-livecode [mailto:use-livecode-bounces at lists.runrev.com] On Behalf Of John Balgenorth via use-livecode
> Sent: Thursday, December 10, 2020 4:03 AM
> To: How to use LiveCode
> Cc: John Balgenorth
> Subject: Re: return "error" code from standalone compile
> 
> Since Livecode is written in C++ here is some
> info about using return  in  C.
> 
> Every C program has a function named main.   At the
> end of the function the programmer usually writes a
> return 0;
> 
> That tells  the c  program the code has  completed
> and is exiting with  a  0 value which confirms it  has
> successfully executed the code and is quitting.
> 
> At any point above that line the programmer can  write
> a return call  but they will usually use a 1  on another
> value.  The program will exit the code at that point  and
> it does not matter what value is entered after the  return
> but 1 usually means the code failed and any other value
> but 0 means anything you want it to mean.
> 
> JB
> 
> 
>> On Dec 9, 2020, at 8:52 PM, J. Landman Gay via use-livecode <use-livecode at lists.runrev.com> wrote:
>> 
>> I don't know much about this but it looks interesting. Is there a list of exit codes somewhere? When the OS receives the exit code, what happens? I.e., how would I use it?
>> --
>> Jacqueline Landman Gay | jacque at hyperactivesw.com
>> HyperActive Software | http://www.hyperactivesw.com
>>> On December 9, 2020 7:48:10 PM Mark Wieder via use-livecode <use-livecode at lists.runrev.com> wrote:
>>> 
>>>> On 12/9/20 5:32 PM, Douglas A. Ruisaard via use-livecode wrote:
>>>> On the completion of a stack, can the compiled executable return an error
>>>> code like the old DOS ErrorLevel value(s)?  If so, how do you specify the
>>>> error code?  in the on closeStack call?
>>> 
>>> See the quit command in the dictionary.
>>> 
>>> quit 42
>>> 
>>> --
>>> Mark Wieder
>>> ahsoftware at gmail.com
>>> 
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>> 
>> 
>> 
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