How do i pass a string to a dll

[sambuddy]

Hello all,

I have created a dll which has a function in it called OCR. At the moment the function looks like this

OCR_DLL_API int OCR(void)

{

return 1000;

}

and when i call the function in the dll

$return=DllCall($dll,"int","OCR")

$return = 1000 which is what it should be

BUT if i now change the function to take a string as a parameter

OCR_DLL_API int OCR(LPCSTR name)

{

return 1000;

}

and i call the function using this

$return=DllCall($dll,"int","OCR","str","John")

autoit crashes

Can anyone tell me how i create the dll to accept a string as a parameter and pass it from autoit?

Thanks

[-Ultima-]

Dunno. Try LPCTSTR instead? Chances are, it won't work (it's just a different #define), but that's the only difference I see between your function and functions I normally call with DllCall :\

Edited September 8, 2008 by -Ultima-

[sambuddy]

thanks for that. I have tried it but no luck

[Richard Robertson]

Have you tried using a straight up "char *" or "wchar_t *"?

Edited September 8, 2008 by Richard Robertson

[LarryDalooza]

is this a cdecl or stdcall dll?

Lar.