1/**
 2 * This file has no copyright assigned and is placed in the Public Domain.
 3 * This file is part of the mingw-w64 runtime package.
 4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 5 */
 6
 7
 8/* This file provides macros and procedures relevant to the PROPERTYKEY structure defined in wtypes.h. */
 9
10
11/* Property identifiers passed to the DEFINE_PROPERTYKEY macro below should be greater than 1; IDs 0 and 1 are reserved.
12 * See also:
13 *     https://web.archive.org/web/20221119001250/https://learn.microsoft.com/en-us/windows/win32/api/wtypes/ns-wtypes-propertykey
14 */
15#if !defined(PID_FIRST_USABLE)
16#define PID_FIRST_USABLE 2
17#endif
18
19/* See the definitions of PROPERTYKEY in wtypes.h, and GUID in guiddef.h. "l" is short for "long", "w" for "word", "b" for "byte", and "pid" for "property identifier". */
20#undef DEFINE_PROPERTYKEY
21#if   defined(INITGUID) &&  defined(__cplusplus)
22#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid) EXTERN_C const PROPERTYKEY DECLSPEC_SELECTANY name = {{l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}},pid}
23#elif defined(INITGUID) && !defined(__cplusplus)
24#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid)          const PROPERTYKEY DECLSPEC_SELECTANY name = {{l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}},pid}
25#else
26#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid) EXTERN_C const PROPERTYKEY                    name
27#endif
28
29
30
31/* This implementation differs from the Windows SDK in order to correctly match the type of REFGUID used in `IsEqualIID()` (defined in guiddef.h) when __cplusplus is not defined. */
32#if   !defined(IsEqualPropertyKey) &&  defined(__cplusplus)
33#define IsEqualPropertyKey(a,b) (((a).pid == (b).pid) && IsEqualIID( (a).fmtid,  (b).fmtid))
34#elif !defined(IsEqualPropertyKey) && !defined(__cplusplus)
35#define IsEqualPropertyKey(a,b) (((a).pid == (b).pid) && IsEqualIID(&(a).fmtid, &(b).fmtid))
36#endif
37
38
39
40#if   !defined(REFPROPERTYKEY) &&  defined(__cplusplus)
41#define REFPROPERTYKEY const PROPERTYKEY &
42#elif !defined(REFPROPERTYKEY) && !defined(__cplusplus)
43#define REFPROPERTYKEY const PROPERTYKEY * __MIDL_CONST
44#endif
45
46#if !defined(_PROPERTYKEY_EQUALITY_OPERATORS_)
47#define _PROPERTYKEY_EQUALITY_OPERATORS_
48#if defined(__cplusplus)
49extern "C++"
50{
51    inline bool operator == (REFPROPERTYKEY k0, REFPROPERTYKEY k1) { return  IsEqualPropertyKey(k0, k1); }
52    inline bool operator != (REFPROPERTYKEY k0, REFPROPERTYKEY k1) { return !IsEqualPropertyKey(k0, k1); }
53}
54#endif
55#endif