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Re: Returning pointers from C DLL [message #12594]

Tue, 25 August 1998 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Simon Hall (shall@atm.ch.cam.ac.uk) writes:

> I need to write a dll that returns a pointer to an array of strings, ie
> I want to return a char** type.
>
> I can get it to return a single string using the /s_value keyword to
> call_external. How do I return an array of strings? I can't see any
> option to return a pointer.

I think you are misunderstanding how things get back
from Call_External. You want to pass the string array
as an *argument* to Call_External. It is better to think
of the return value of Call_External as a value that tells
you whether the function call was successful or not.

myStringArray = StrArr(10)
ok = Call_External('my.dll', 'fill_string', myStringArray)

Cheers,

David

----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438, Toll-Free Book Orders: 1-888-461-0155
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		Re: Returning pointers from C DLL By: davidf on Tue, 25 August 1998 00:00
		Re: Returning pointers from C DLL By: rivers on Tue, 25 August 1998 00:00

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