CLSID_DirectPlay8Client Problem

That should be enough to make it work.

Can you show us the lines of your code that have the CLSID_DirectPlay8Client on (probably a CoCreateInstance call).

- Do the DPlay tutorials in the SDK compile ?

- Is the file with the code in a C file rather than a CPP one ?

- Do any of the other headers you''re including have extern "C"''s in them ?

The fact that there''s an underscore in front of the name in the error message likely means either you''ve typed the name in with an incorrect extra leading underscore or the compiler/linker thinks the file is using C names.

- What compiler are you using ?

- Are the headers and libs you''re using the ones straight from the SDK or are they ones that someone has "converted" to work with another compiler such as Borland ? (i.e. whoever did the conversion may have screwed up the linkage settings)



--
Simon O''Connor
3D Game Programmer &
Microsoft DirectX MVP

Hi and thanks for replying.

Here''s what I could find.

- Do the DPlay tutorials in the SDK compile ?

Answer: Nope, but I get a different problem with them, It''s the DialogBox functions which don''t work (something about the 4 Parameter not being of type of long). I''ve read somewhere that this error could happen with this function and that I should switch the function to the specific type.

Note: I''ve turn the DialogBox function into comment and I get the same problem now.

- Is the file with the code in a C file rather than a CPP one ?

Answer: The code is in CPP, I''m using Visual C++ 6.0, (I''ve just re-installed it on Windows XP)

- Do any of the other headers you''re including have extern "C"''s in them ?

Answer: Nope. (Except for the DPlay header, there''s no Extern "C"

BTW, I''ve created a MFC Dialog Box using the Wizard Creation APP.

I''m also tending toward thinking that it''s a link related problem. So I''ve check and double-check the DxGuid.Lib and the DPlayX.Lib and they''re both there.

- What compiler are you using ?

I''m using Visual C++ 6.0


- .. The Headers origin .. :

I took them directly from the SDK.


I''ve also added the link and the include directory in the Directory List with no luck.

Nick

> " unresolved external symbol _CLSID_DirectPlay8Client "

The GUIDs are not defined. Create another C file with only the include files you use for DX and put a define for INITGUID in front. Here''s an example:

#define INITGUID
#include <dplay8.h>
#include <dinput.h>
#include <mmsystem.h>
#include <dmusici.h>
#include <dsound.h>
#include "my_app_directplay.h"

This changes the DEFINE_GUID() macro from an external reference to a storage declaration.

-cb

Did that.. with no result..

But I''ve finally figure out what the problem was (D''OH!).

I know it was something simple, I simply forgot to put the DirectX Directory Path in my Include/Libary Director on the top of the list so it would look for it there first instead of taking the one within the other Library included with MS VC++
6.0.

All is working fine now


Nick