Problem passing pointer to dll

[Dmanley]

I have a VB program that calls a C++ dll and passes it a pointer to a byte.

I been able to make everything else work, the handles, strings, all of those, but when trying to pass a pointer I get a vb6.exe error saying the memory could not be read. I don't think it has anything to do with the C dll because I commented out all of the code inside the function to see if it was in there and still got the same problem.

I have a byte variable, I'm sending it byref and the c dll is supposed to write to that address.

Any ideas?

thank in advance

[cksiow]

try declare the parameter as any


HTH

cksiow
http://vblib.virtualave.net - share our codes

[Clearcode]

You could try declaring it
byval lpByte as Long

and in the call, passing VarPtr(btMyVariable)

?

-------------------------------------------------
Ex. Datis: Duncan Jones
Merrion Computing Ltd
http://www.merrioncomputing.com
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[DSJ]

Declare YourCFunction(byval bParm as byte) as whatever

private Sub CallFunction()
dim bVar(100) as byte
dim ret as whatever
ret = YourCFunction(bvar(0))
end sub