I 'd really really appreciate any help with this stuff.
I mostly write software in C/C++ and I have extremely
limited knowledge when it comes to VB.

I did try Dejanews first before posting. Here's the problem,

I wrote a C Dll,
void mydll(double * array1, double ** array2)

I want to call this from a VB program. It should create these
arrays, and the dll 'll only process them.

In VB I use,

Dim Array1(100) As Double
Dim Array2(10,100) As Double

My questions are,

a) How do I 'Declare' these functions in VB..?
Public Declare Sub mydll Lib "thedll" ( .. ????? )
Should I pass array names only ? Should I use ByVal as Any
or ByRef? Should I use paranthesis after array name?

b) How can I differentiate in two dimensional and single
dimensional array in VB, while I am passing them as argument.
I mean how do I let VB know about that?

c) Can I use user defined type in VB, and then use the equivalent
in C? So maybe I can use array inside a user defined type, and
then pass it 'As Any'.

Thanks a million !!
--
Noman

   I 'd really really appreciate any help with this stuff.
   I mostly write software in C/C++ and I have extremely
   limited knowledge when it comes to VB.

comp.lang.c isn't the right group for ``C/C++''[1] questions and
certainly not for VB questions.

[1] There is no such language.
--
"I ran it on my DeathStation 9000 and demons flew out of my nose." --Kaz

Please: do not email me copies of your posts to comp.lang.c
        do not ask me C questions via email; post them instead

Not very helpful, Ben. It is a valid question for either NG.

I agree, there is no language called "[1]".

Steve

Declare the array parameter as ByRef as whatever type your array is
comprised of (even a struct! Oops, I mean 'user defined type')

Call the function from VB by passing the first element of your array, like
so:

MyDllFunc MyArray(0)

Steve

<Jack>

Not very correct, Steve, at least for comp.lang.c.  The C language, which is
defined by ANSI/ISO 9899:1990 and NOT by Microsoft, has absolutely no support
for DLLs (which are a Windows feature and not part of any programming language
per se), or for linking with ANY other language.  Questions about DLLs and
mixing other languages with C do not belong in this newsgroup.

There are plenty of compiler specific newsgroups (microsoft.public.vc.* and
borland.public.cpp.*) dedicated to compilers which have Windows specific
extensions such as DLLs and questions about making/using them with those C
compilers belongs there.

Visual Basic on the other hand is specifically a Windows creature, and its
standard is specifically geared to Windows.  It does not adhere to any
standard except Microsoft's whim.  So I do agree that DLLs are topical in a VB
newsgroup.

</Jack>

I disagree.

Feel free to discuss it ad naseum in comp.lang.basic.visual; you will be
thanked, however, to refrain from making further posts on the subject to
comp.lang.c.

There's nothing more irritating than a person being purposefully obtuse.
Ben was referring, of course, to the mythical 'C/C++' when he stated that
such does not exist.

--
(cfgwgid)