Re: API data type prototyping

Hi Pete,

Not sure, but could it be Barbara Morris's article ??
www.Think400.dk/adhoc_2.htm#eks0010

Leif
----- Original Message ----- 
From: "Pete Helgren" <Pete@xxxxxxxxxx>
To: "RPG Midrange Discussion" <rpg400-l@xxxxxxxxxxxx>
Sent: 18. juli 2005 19:15
Subject: API data type prototyping


> Seemed to me that there was a post, way back when, that had some 
> instructions for mapping API data types to RPG types.  Perhaps there is 
> an FAQ somewhere?
> 
> What I would like is some general instructions on how to properly define 
> variables in my prototypes for system API calls.  For example, I am 
> working with QSZRTVPR API and it has the following format:
> 
> 1     Receiver variable     Output     Char(*)
> 2     Length of receiver variable     Input     Binary(4)
> 3     Format name     Input     Char(8)
> 4     Product information     Input     Char(*)
> 5     Error code     I/O     Char(*)
> 
>  Optional Parameter:
> 
> 6     Product information format name     Input     Char(8)
> 
> What I would like is something that says:
> 
> Binary(4) maps to 10I
> Char(*) maps to (? don't know)
> Char(8) to 8A
> 
> Also whether or not the value keyword is needed. Anything special for 
> I/O vs Input or output.  That kind of thing.
> 
> Yes, this is basic stuff and yes, I suppose a properly trained RPG 
> programmer would know this stuff, but I recently transitioned to RPG IV 
> (free form mostly) and some of this stuff is just tough to get your arms 
> around (especially when Java and C++ also intrude into the programming 
> mix on a daily basis).
> 
> Perhaps an FAQ entitled "How to prototype and use system API's"?  
> Although I know we can't document all the API's, general "rules" about 
> how to do it would be helpful.  Perhaps it is already in a post.  If so 
> I'd gladly format them into an FAQ or stuff them in the Wiki.
> 
> Seems that I have seen something like this somewhere in the past...if 
> so, sorry for the waste of time...could you point me to it.
> 
> Pete Helgren
> 
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