Re: Parameter Passage Between VB (4.0/5.0) and DLL

Article View: comp.os.ms-windows.nt

Article #11

Back to comp.os.ms-windows.nt Previous Next

#11

From: John Winters
Date: Tue, 06 Jan 1998 00:00

27 lines
2127 bytes

In article <34B28F40.178D@ibm.net>, farrellrp3  <farrellrp3@ibm.net> wrote:
>I am having problems interfacing through VB 4.0 16 bit with a 16 bit
>DLL which I made with WATCOM C++.  I can call a number of functions in
>the DLL, but I get a Windows system crash when I call a particular
>function in this DLL.
>
>	It seems that DLL functions which take as parameters either scaler
>values or pointers to strings work fine. The problem arises when a DLL
>function expects a pointer to an array (i.e. a pointer to a pointer).
>How do you make VB's parameter passage conform to this situation of two
>levels of indirection?

Obviously the place to ask about interfacing a program written in
Visual Basic to a 16-bit DLL written in C++, using facilities specific
to one peculiar platform is comp.lang.c.

Please take a bit more care when selecting where to post to.

Follow-ups set.

John
-- 
John Winters.  Wallingford, Oxon, England.

Want to buy Linux CDs cheaply in the UK?  Join the Linux Buyers' Consortium.
See <http://www.polo.demon.co.uk/lbc.html>

Technical Details

Message-ID: <68u9uu$qaf$1@polo.demon.co.uk>

Path: arc1-ca.pugleaf.net!unknown!not-for-mail

References: <34B28F40.178D@ibm.net>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 10b213,519526a5822d603e
X-Google-Attributes: gid10b213,public
X-Google-Thread: 1014db,519526a5822d603e
X-Google-Attributes: gid1014db,public
X-Google-Thread: fa335,519526a5822d603e
X-Google-Attributes: gidfa335,public
X-Google-Thread: 105df1,5e895dadd443194e,start
X-Google-Attributes: gid105df1,public
X-Google-Thread: 109fba,519526a5822d603e
X-Google-Attributes: gid109fba,public
X-Google-Thread: 103bde,519526a5822d603e
X-Google-Attributes: gid103bde,public
From: john@polo.demon.co.uk (John Winters)
Subject: Re: Parameter Passage Between VB (4.0/5.0) and DLL
Date: 1998/01/06
Message-ID: <68u9uu$qaf$1@polo.demon.co.uk>
X-Deja-AN: 313415173
References: <34B28F40.178D@ibm.net>
Followup-To: comp.os.ms-windows.programmer.misc
X-NNTP-Posting-Host: polo.demon.co.uk [158.152.105.238]
Organization: Spirit software
Newsgroups: comp.os.ms-windows.nt,comp.lang.c++,microsoft.public.vb.controls,borland.public.cpp.winapi,comp.lang.c,comp.os.ms-windows.programmer.misc

Reply to Parent Message