1 // Common/MyInitGuid.h 2 3 #ifndef __COMMON_MY_INITGUID_H 4 #define __COMMON_MY_INITGUID_H 5 6 /* 7 This file must be included only to one C++ file in project before 8 declarations of COM interfaces with DEFINE_GUID macro. 9 10 Each GUID must be initialized exactly once in project. 11 There are two different versions of the DEFINE_GUID macro in guiddef.h (MyGuidDef.h): 12 - if INITGUID is not defined: DEFINE_GUID declares an external reference to the symbol name. 13 - if INITGUID is defined: DEFINE_GUID initializes the symbol name to the value of the GUID. 14 15 Also we need IID_IUnknown that is initialized in some file for linking: 16 MSVC: by default the linker uses some lib file that contains IID_IUnknown 17 MinGW: add -luuid switch for linker 18 WinCE: we define IID_IUnknown in this file 19 Other: we define IID_IUnknown in this file 20 */ 21 22 #ifdef _WIN32 23 24 #ifdef UNDER_CE 25 #include <basetyps.h> 26 #endif 27 28 #include <initguid.h> 29 30 #ifdef UNDER_CE 31 DEFINE_GUID(IID_IUnknown, 32 0x00000000, 0x0000, 0x0000, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46); 33 #endif 34 35 #else 36 37 #define INITGUID 38 #include "MyGuidDef.h" 39 DEFINE_GUID(IID_IUnknown, 40 0x00000000, 0x0000, 0x0000, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46); 41 42 #endif 43 44 45 #endif 46
