Re: Visual Basic Front End

Frank,

the "client access express programming" manual is good to have.

Learn how to use VB classes and create activex dlls.  There is a lot of cae
function "wrapping" that needs to be done.

for example, the cae ado driver does not support the "seek" method.  This
means you cant chain to a rcd in a file like ado code that is pointed to an
sql server or access database file.  You have to use the CAE bookmark
support which does provide a seek method. it returns a RRN. The, in my
opinion,  intentionally limited IBM CAE ADO provider can read a rcd by RRN.
So to seek, your code has to bookmark chain, then ado read by RRN. A VB
class can be written to encapsulate all of this.  It is just a lot of extra
work.

for pgm calls ...

the cae programming manual documents a collection of c++ accessible
"distributed pgm call" functions that enable the calling of a pgm on the
as400 and the passing of parameters.  My first attempt at using the VB
Declare stmt to call the cae functions has failed.  So I am writing an
interface dll in c++.  I call from my vb pgm to my c++ dll, then my c++ dll
calls the cae functions.  Once your VB pgm can all the DPC APIs there are a
series of api calls that have to be performed to execute the actual as400
pgm call.


Steve Richter


----- Original Message -----
From: "Frank W. Kany IV" <frank.kany@burr-reid.org>
To: <midrange-l@midrange.com>
Sent: Monday, April 22, 2002 1:48 PM
Subject: Visual Basic Front End


This is a multi-part message in MIME format.
--
[ Picked text/plain from multipart/alternative ]
Does anyone know of any good resources where I can learn how to use Visual
Basic 6 as a front end to the AS/400.  I'd like to learn how I can use VB6
to call RPG and CL programs.  If anyone has any *.pdf manuals they can send
me or web sites with this information, that would be helpful.

TIA,

Frank
frank.kany@burr-reid.org
--


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