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#ifndef DS_IUNK_H
#define DS_IUNK_H
#include "guids.h"
#define DECLARE_IUNKNOWN(CLASSNAME) \
int refcount;
#define INHERIT_IUNKNOWN() \
long STDCALL (*QueryInterface)(IUnknown * This, GUID* riid, void **ppvObject); \
long STDCALL (*AddRef) (IUnknown * This); \
long STDCALL (*Release) (IUnknown * This);
#define IMPLEMENT_IUNKNOWN(CLASSNAME) \
long STDCALL CLASSNAME ## _QueryInterface(IUnknown * This, GUID* riid, void **ppvObject); \
long STDCALL CLASSNAME ## _AddRef ( \
IUnknown * This); \
long STDCALL CLASSNAME ## _Release ( \
IUnknown * This); \
long STDCALL CLASSNAME ## _QueryInterface(IUnknown * This, GUID* riid, void **ppvObject) \
{ \
CLASSNAME * me = (CLASSNAME *)This; \
GUID* r; unsigned int i = 0; \
Debug printf(#CLASSNAME "_QueryInterface() called\n");\
if (!ppvObject) return 0x80004003; \
for(r=me->interfaces; i<sizeof(me->interfaces)/sizeof(me->interfaces[0]); r++, i++) \
if(!memcmp(r, riid, 16)) \
{ \
me->vt->AddRef((IUnknown*)This); \
*ppvObject=This; \
return 0; \
} \
Debug printf("Failed\n"); \
return E_NOINTERFACE; \
} \
\
long STDCALL CLASSNAME ## _AddRef ( \
IUnknown * This) \
{ \
CLASSNAME * me=( CLASSNAME *)This; \
Debug printf(#CLASSNAME "_AddRef() called\n"); \
return ++(me->refcount); \
} \
\
long STDCALL CLASSNAME ## _Release ( \
IUnknown * This) \
{ \
CLASSNAME* me=( CLASSNAME *)This; \
Debug printf(#CLASSNAME "_Release() called\n"); \
if(--(me->refcount) ==0) \
CLASSNAME ## _Destroy(me); \
return 0; \
}
#endif /* DS_IUNK_H */
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