mmreg.h

#1 Do you have the latest VC++ Service Pack installed (SPDetect)? Also, do you have the Directx SDK installed?

#2 I'm not using VC++, Dev C++ instead. Ihave the DX8 SDK installed, but I think that mmreg.h is a windows thing, not a DX file.

#3 mmreg.h

#4 Thanks Matthew thats great, got to go and try it out now. I just hope that it doesn't use a pile of other files I don't own :]

#5 That seems to have done the trick, but I've got another problem now. I've defined INIT_GUID and al lthe IID's and GUID's are fine appart from one - GUID_NULL. The compiler doesn't complain, so the definition must be there somewhere, but the linker says it cant resolve GUID_NULL.

Does anyone know how I could fix that, or if I could use any other expression to replace GUID_NULL? I've checked all the DX docs, and nowhere does it mention what needs to be linked to for GUID_NULL.

#6 Try including dxguid.lib in your project.

#7 I've done that, and the linker is fine with every other GUID in the program apart from GUID_NULL.

#8 It appears that all you need for GUID_NULL is to
#include

I compiled this program:

#include

void main()
{
GUID guidInstance = GUID_NULL;
}

With no libs linked to it and no errors. GUID_NULL is also defined in cguid.h

Hope this helps some =)

#9 good investigation

#10 I already have windows.h included, I'll try cguid.h and see if that works. Thanks for the help.

#11 I had a good hunt around, and it turns out that GUID_NULL is in uuid, I've linked to the equivelent of uuid.lib, and all's well, thanks anyway for all the help.