Call own dll.

I was trying to use the dll that is not standart
Win API dll. The function that I try to use
declared as following.

int FileVersion(char *filename)




And here is how I declared it in my VB project

Declare Function D3FileVersion
Lib "d3libshr" (Buffer as string)
as Integer




And here is the error that I got
"Bad DLL calling convention" ERRor 49
Please tell me that doe this error mean.
thks
Alex!

I don't think a C charcter pointer translates to a VB string. However, I don't really know what it would translate to. I would try changing "as string" to "as any" and see how that goes.

I think that the best translation for a character pointer is a byte array, so if as any doesn't work, try changing the variable to a byte array.

C experts, help me out here -- I'm just throwing out the hacks I would try, don't know if they'll work.

Charlie Zimmerman
http://www.freevbcode.com


Charlie

you should declare the string like this
( byval s as string )
then, in a 32 bit DLL an int is 4 bytes. Thus you should declare the returncode of your function "As Long".

It seams like byVal is the critical thing here.
And although it generate the error it does do the
job it suppose to do. I am trying to see why it
doing that but it works!!!!!!!!!!!
Thks!