ATL接口映射宏详解(上)

1、ATL½Ó¿ÚÓ³ÉäºêÏê½â (ÉÏ) ÐòÑÔ£º Õ⼸Ìì¿´ÁË¿´ATLµÄ½Ó¿ÚÓ³Éäºê£¬&

2、#178;»Öª²»¾õ¿´µÃ±È½ÏÉîÈëÁË£¬Í»È»¾ÍÃÈ·¢ÁË°ÑËüд³öÀ´µÄÏë&

3、#183;¨¡£ATLÖж¨ÒåÁ˺ܶà½Ó¿ÚÓ³Éäºê£¬Óм¸¸ö»¹ÊDZȽÏÖØÒªµÄ£

4、2;ËäÈ»ºÃÏóûÓбØÒª°ÑËüËùÓеÄϸ½Ú¶¼ÅªµÃºÜÇå³þ£¬µ«ÉîÈ

5、5;ѧϰµÄ¹ý³ÌÖÐÒ²¿ÉÒÔ˳´øѧһѧÆäËûµÄATLÀ࣬¶ÔËüµÄ»úÖÆÒ&

6、#178;¿ÉÒÔ¸üÇå³þһЩ£¬Ó¦¸Ã»¹ÊÇ»áÓÐЩºÃ´¦µÄ°É¡£ÎÒ°´ÕÕÎÒÑ&

7、#167;Ï°µÄ¹ý³Ì°ÑËüд³öÀ´£¬Ò² ²»ÖªµÀ´ó¼ÒÄܲ»ÄÜ¿´¶®¡£ÏëÄ£·

8、ÂһϺîÀÏʦµÄÊÖ±ÊÁ¦Õù°ÑÆäÄÚ²¿Ï¸½Ú½âÊÍÇå³þ£¬µ«Ò²²»¸

9、Ò´óÑÔ²»²ÑµÄÃÀÆäÃûÔ»¡°ÉîÈëdz³ö¡±£¬ºÇºÇ£¬Ö»Ï£ÍûÄܶԴ

10、ó¼ÒÓÐËù°ïÖúÁË¡£ ÒԺ󽫷ֱð½éÉÜATLÖи÷¸öÐÎʽΪCOM_INTERFACE_ENTRY_XXµÄ½Ó

11、1;ÚÓ³Éäºê²¢½«°´ÕÕ´ÓÒ×µ½ÄѵÄ˳Ðò½²½â£¬Ã¿Ò»²¿·Ö¶¼½«½¨

12、3;¢ÔÚÇ°Ò»²¿·ÖµÄ»ù´¡ÉÏ¡£Ã¿Ò»²¿·Ö¶¼½«Í¨¹ý·ÖÎöʵ¼ÊµÄµ÷

13、1;ú¯Êý¶ÑÕ»À´½øÐзÖÎö,¶ÑÕ»µÄд·¨ÊÇ´ÓÏÂÏòÉÏ¡£ÎÄÖÐËùÉæ

14、88;°µÄ´úÂ붼ΪÂÔд£¬Ö»ÁгöÏà¹Ø²¿·Ö¡£ Ò»¡¢COM_INTERFACE_ENTRY(x) Ê×ÏÈÎÒÃÇ

15、80;ÓÒ»¸ö×îµäÐ͵ÄÓ¦ÓÿªÊ¼£º ¶¨ÒåÒ»¸ö×î¼òµ¥µÄATL DLL£º class ATL_NO_VTABLE CMyObject : public CCo

16、mObjectRootEx, public CComCoClass, public IDispatchImpl . BEGIN_COM_MAP(CMyObject) COM_INTERFACE_ENTRY(IMyObject) /Ò»¸öË«½Ó¿Ú COM_INTERFACE_ENTRY(IDispatch) END_COM_MAP() . ; ±àдһ¶Î×î¼ò

17、81;¥µÄ²éѯ½Ó¿Ú´úÂ룺 IUnknown *pUnk; IMyObject *pMyObject; CoCreateInstance(CLSID_MyObject, NULL, CLSCTX_INPROC_SERVER, IID_IUnknown, (void *)&pUnk); pUnk->QueryInterface(IID_IMyObject, (void *)&pMyObject

18、); Ö´Ðпͻ§´úÂ룬Ê×ÏÈÎÒÃÇ¿´¿´×é¼þ¶ÔÏóÊÇÈçºÎ±»´´½¨µÄ¡

19、63; º¯Êýµ÷ÓöÑÕ»Ò»£º 4. 3.ATL:CComCreator< ATL:CComObject< CMyObject > >:CreateInstance(.) 2.ATL:CComCreator2< ATL:CComCreator< ATL:CComObject< CMyObject > >, ATL:CComCreator< ATL:CComAggObj

20、ect< CMyObject > > >:CreateInstance(.) 1.ATL:CComClassFactory:CreateInstance(.) 4.ATL:AtlModuleGetClassObject(.) 9.ATL:AtlInternalQueryInterface(.) 8.ATL:CComObjectRootBase:InternalQueryInterface(.) 7.ATL:CComClassFactory:_InternalQueryInterface(.) 6.ATL:CComObjectCached:QueryInterface(.

21、) 5.ATL:CComCreator >: CreateInstance(.) 4.ATL:AtlModuleGetClassObject(.) 3.ATL:CComModule:GetClassObject(.) 2.DllGetClassObject(.) 1.CoCreateInstance(.)(¿Í»§¶Ë) ½âÊÍÈçÏ£º 1: CoCreateInstance(CLSID_MyObject, NULL, CL

22、SCTX_INPROC_SERVER, IID_IUnknown, (void *)&pUnk); ÆäÄÚ²¿½«µ÷ÓÃOLE APIº¯ÊýCoGetClassObject(), ¶øCoGetClassObjectÔò»áͨ¹ý LoadLibrary(.)×°ÈëDLL£

23、;¬²¢µ÷ÓÃDLLÖеÄDllGetClassObject()º¯Êý¡£ 2: STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv) return _Module.GetClassObject(rclsid, riid, ppv);ÆäÖÐÖµµÃ×

24、¢ÒâµÄÊÇ_Module±äÁ¿£¬ÔÚDLLÖж¨ÒåÁËÈ«¾Ö±äÁ¿£º CComModule _Module; ATLͨ¹ýÒ»×éºê£&#

25、186; BEGIN_OBJECT_MAP(ObjectMap) OBJECT_ENTRY(CLSID_MyObject, CMyObject) END_OBJECT_MAP() #define BEGIN_OBJECT_MAP(x) static _ATL_OBJMAP_ENTRY x = #define OBJECT_ENTRY(clsid, class) &clsid, class:UpdateRegistry, class:_ClassFactoryCreatorClass:CreateInstance, /¹Ø¼ü class:_Cre

26、atorClass:CreateInstance, NULL, 0, class:GetObjectDescription, class:GetCategoryMap, class:ObjectMain , #define END_OBJECT_MAP() NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL; Éú³ÉÒ»¸ö¾²Ì¬È«¾Ö_ATL_OBJMAP_ENTRYÐ

27、5;Êý×飺ObjectMap; È»ºóATLÓÖÔÚ BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/ . _Module.Init(ObjectMap, hInstance, &LIBID_TEST2Lib); . Öгõʼ»¯_Module /&#

28、215;¢ÒâÔÚÓеÄÇé¿öÏÂÊÇÔÚInitInstance£¨£©Öгõʼ»¯_Module ÄÇô_Module³õʼ»¯¶¼×ö

29、;ÁËЩʲôÄØ£¬ÆäʵËûʲôҲû×ö£¬ÔÚCComModule:InitÖУ¬Ëüµ÷ÓÃAtlModuleInit(_ATL_MODULE* pM, _

30、ATL_OBJMAP_ENTRY* p, HINSTANCE h)£¬ÔÚÆäÖйؼüµÄÖ»ÓÐÒ»¾ä£ºpM->m_pObjMap = p;¿É¼û_Module½ö½öÊÇ°ÑÕâ¸ö

31、;È«¾Ö¶ÔÏóÓ³ÉäÊý×é ObjectMap¸ø´æÁËÆðÀ´¡£ÄÇôΪʲô¿ÉÒÔͨ¹ý_Module.GetCl

32、assObjectµÃµ½À೧ÄØ£¿Æäʵ¹Ø¼üÔÚÓÚÎÒÃǵÄ×é¼þCMyObject¼Ì³ÐµÄÓÖÒ»¸ö»

33、ùÀàCComCoClass! ÔÚCComCoClassÖÐȱʡ¶¨ÒåÁËÒ»¸öºêDECLARE_CLASSFACTORY()¶ø #define DECLARE_CLASSFACTORY() DECLARE_CLASSFACTORY_EX(CComClassFactory)#define DECLARE_CLASSFACTORY_EX

34、(cf) typedef CComCreator< ccomobjectcached< cf > > _ClassFactoryCreatorClass;CComCreator,CComObjectCachedÎÒÃÇÔÝÇÒ²»¹Ü£¬µ«Ò»¿´µ½CComClassFactory£¬¹ËÃû

35、;˼Ò壬ÎÒÃǾÍÖªµÀÎÒÃÇÒªµÄÀ೧ÖÕÓÚ³öÏÖÁË£¡Ã¿¸ö×é¼þÄÚ

36、;²¿Ô­À´¶¼ÓÐÒ»¸öÀ೧¶ÔÏó¡£ÈÆÁËÒ»´óȦ£¬ÎÒÃÇÏÖÔÚÒѾ­Öª

37、;µÀÁË_ModuleÖаüº¬ÁËÎÒÃÇËùÒªµÄÿ¸ö×é¼þµÄÀ೧¶ÔÏó£¬Õâ¶ÔÄ¿

38、9;°À´ËµÒѾ­×ã¹»ÁË£¬ÏÖÔÚ¼ÌÐø·ÓÉÏÂÈ¥£¡ 3: HRESULT CComModule:GetClassObject(REFCLSID rclsid,REFIID riid,LPVOID* ppv)return Atl

39、ModuleGetClassObject(this, rclsid, riid, ppv); CComModule:GetClassObjectµÄʵÏַdz£¼òµ¥£¬½ö½öÊǵ÷ÓÃATLµÄAPIº¯Êý¡£ 4: ATLINLINE ATLA

40、PI AtlModuleGetClassObject(_ATL_MODULE* pM, REFCLSID rclsid, REFIID riid, LPVOID* ppv) _ATL_OBJMAP_ENTRY* pEntry = pM->m_pObjMap;/´Ó_ModuleÖÐÈ¡³ö¶ÔÏóÓ³ÉäÊý×é while (pEntry->pclsid != NULL) if (p

41、Entry->pfnGetClassObject != NULL) && InlineIsEqualGUID(rclsid, *pEntry->pclsid) if (pEntry->pCF = NULL) hRes = pEntry->pfnGetClassObject(pEntry->pfnCreateInstance, IID_IUnknown, (LPVOID*)&pEntry->pCF); if (pEntry->pCF != NULL) hRes = pEntry->pCF->QueryInterface

42、(riid, ppv); break; pEntry = _NextObjectMapEntry(pM, pEntry); ÏÖÔÚºÃÏóÒѾ­Óе㿴²»¶®ÁË£¬¿´À´ÎÒÃǵÿ´¿

43、0;_ATL_OBJMAP_ENTRYµÄ½á¹¹ÁË struct _ATL_OBJMAP_ENTRY const CLSID* pclsid; HRESULT (WINAPI *pfnUpdateRegistry)(BOOL bRegister); _ATL_CREATORFUNC* pfnGetClassObject; _ATL_CREATORFUNC* pfnCreateInstance; IUnknown* pCF; DWORD dwRegister; _ATL_DESCRIPTIONFUNC* pfnG

44、etObjectDescription; _ATL_CATMAPFUNC* pfnGetCategoryMap; pclsidºÜÇå³þ¾Í´ú±í×ÅÎÒÃÇ×é¼þµÄCLSID£»pfnGetClassObjectÎÒÃÇÒ²ÒѾ­

45、;ÖªµÀÁËËü¾ÍÊÇCMyObject:_ClassFactoryCreatorClass:CreateInstance(ÎÒÃÇ×é¼þËù°üº¬µÄÀ೧¶ÔÏóµÄCreateInstanceº

46、¯Êý)£»pCFÎÒÃÇÒ²¿ÉÒԲ³öËüÊÇÖ¸ÏòÕâ¸öÀ೧µÄIUnknownÖ¸Õ룬´ú±íÕ

47、â¸öÀ೧¶ÔÏóÊÇ·ñ±»´´½¨¹ý£¬ÈôÀ೧¶ÔÏóÒѾ­´æÔÚ£¬¾Í²»Ó

48、ÃÔÙ´´½¨ÐµÄÀ೧¶ÔÏóÁË¡£ÏÖÔÚ¾ÍÊ£ÏÂpfnCreateInstanceÎÒÃÇ»¹²»Ã÷°×Ôõ&

49、#195;´»ØÊ¡£Æäʵ´ð°¸»¹ÊÇÔÚ CComCoClassÖУ¡ ÔÚCComCoClassÖÐȱʡ¶¨ÒåÁ˺êDECLARE_AGGREGATABLE(x),&

50、#213;â¸öºê±íʾÕâ¸ö×é¼þ¼È¿ÉÒÔÊǾۼ¯µÄÒ²¿ÉÒÔÊǷǾۼ¯µÄ£¬&

51、#185;ØÓÚ¾Û¼¯µÄ¸ÅÄîÎÒÃÇÔÝÇÒ²»Àí£¬ÏÈ¿´ËüµÄ¶¨Ò壺 #define DECLARE_AGGREGATABLE(x) public: typedef

52、CComCreator2< ccomcreator< CComObject< x > >, CComCreator< ccomaggobject< x > > > _CreatorClass; ÎÒÃÇ¿´µ½ÁËÒ»¸öÊìϤµÄ×Ö·û´®_CreatorClass, &#

53、212;­À´Õ⻹ÓÐÒ»¸ö×é¼þ°üº¬µÄ¶ÔÏó¡£µ«»¹ÓÐÒ»¸öÎÊÌâÎÒÃÇû&#

54、211;иãÇå³þ£¬¾ÍÊÇΪʲô_ClassFactoryCreatorºÍ_CreatorClassºóÃ涼Ҫ¸ú×ÅÒ»¸öCreateInstance? ¿´À´&

55、#206;ÒÃDZØÐëÏÈÀ´¿´¿´CComCreatorÊǸöʲô¶«Î÷ÁË¡£ template < class T1 >class CComCreator public: static HRESULT WINAPI CreateInstance(void* p

56、v, REFIID riid, LPVOID* ppv) . ; Ô­À´ËüÀïÃæÖ»ÓÐÒ»¸öCreateInstanceº¯Êý£¬ÎÒÃÇÏÖÔÚÖÕÓÚ´óÌåÃ÷&

57、#176;×_ClassFactoryCreatorClass:CreateInstance ±íʾʲôÒâ˼ÁË£¬Ëü¾Í´ú±íCComClassFactory:CreateInstance(.)°É£¬²î²»¶à¾

58、5;ÊÇÕâÑùÁË¡£ÄÇÎÒÃÇÔÙÀ´¿´¿´CComCreator2ÓÐʲô²»Í¬£º template < class T1, class T2 >class CComCreator2 public: stati

59、c HRESULT WINAPI CreateInstance(void* pv, REFIID riid, LPVOID* ppv) return (pv = NULL) ? T1:CreateInstance(NULL, riid, ppv) : T2:CreateInstance(pv, riid, ppv); ; Õâ¸öÀàÓëCComCreatorºÜÀàËÆ,¶¼Ö»ÓÐÒ

60、»¸öCreateInstance³ÉÔ±º¯Êý£¬´Ó_CreatorClass ÖÐÎÒÃÇ¿ÉÒÔÖªµÀËüʵ¼ÊÉÏ°üº¬Á½¸ö&#

61、192;àCComObject,CComAggObjectµÄCreateInstanceº¯Êý(ͨ¹ýCComCreator),ÆäÖÐCComObjectÓÃÓڷǾۼ¯¶ÔÏó£¬CComAggObjectÓÃÓÚ¾Û

62、;¼¯¶ÔÏó¸ù¾ÝÇé¿öËü½¨Á¢ÏàÓ¦µÄ¶ÔÏó¡£(ATLÖÐʵ¼ÊÉú³ÉµÄ×é¼þ¶&

63、#212;Ïó²»ÊÇCMyObject,¶øÊÇ CComObject,CComAggObject»òCComPolyObject¶ÔÏó,Õâ¸ö¸ÅÄîºÜÖØÒª,µ«ÏÖÔÚÔÝÇÒ

64、8;»Ì¸) ÏÖÔÚÎÒÃǶÔAtlModuleGetClassObject(.)»ù±¾ÒѾ­ÖªµÀÊÇÔõô»ØÊÂÁË£¬Ëü¾ÍÊÇ

65、¸ù¾Ý´æÔÚ¶ÔÏóÓ³ÉäÊý×éÖеĴ´½¨À೧µÄº¯ÊýµÄµØÖ·À´´´½¨

66、À೧¡£pfnGetClassObjectÒÔ¼° pfnCreateInstanceÎÒÃÇ»ù±¾É϶¼ÒѾ­ÖªµÀÊÇÔõô»ØÊÂÁË£¬&

67、#181;«»¹ÓÐÒ»¸öÎÊÌâΪʲôҪ°ÑpEntry->pfnCreateInstance×÷ΪpEntry->pfnGetClassObject(.)ÖеÄÒ»¸ö²ÎÊý&#

68、180;«µÝ£¿´ð°¸ÔÚÏÂÃæÄØ£¬ÈÃÎÒÃǼÌÐø·ÓÉÏÂÈ¥£¡ 5: CComCreator:CreateInstance(void* pv, REFIID riid, LPVOID*

69、ppv) T1* p = NULL; ATLTRY(p = new T1(pv)/´´½¨À೧¶ÔÏó if (p != NULL) p->SetVoid(pv); p->InternalFinalConstructAddRef(); hRes = p->FinalConstruct(); p->InternalFinalConstructRelease(); if (hRes = S_OK) hRes = p->QueryInterface

70、(riid, ppv); if (hRes != S_OK) delete p; ×¢ÒâÕâÀïµÄT1ÊÇCComObjectCached< ATL:CComClassFactory >,ÕâÊÇÎÒÃǸøCComCreator µÄÄ£°å²ÎÊý¡

71、£ÎÒÃÇÓÖÒ»´Î¿´µ½ÁËÎÒÃÇÊìϤµÄ²Ù×÷·û'new'!Ö±µ½ÏÖÔÚÎÒÃÇÖÕ

72、1;Ú´´½¨ÁË×é¼þµÄÀ೧¡£µ«»¹Ã»Í꣬¼ÌÐøÍùÏÂ×ߣ¬¿´¿´SetVoid(pv)Àï¸

73、;ÉÁËЩʲô£¿ void CComClassFactory:SetVoid(void* pv) m_pfnCreateInstance = (_ATL_CREATORFUNC*)pv; ´ó¼Ò»¹¼ÇµÃÎÒÃÇÔø¾­°ÑCMyObject:_CreatorClass:Cre

74、ateInstance×÷Ϊ²ÎÊý´«¸ø pEntry->pfnGetClassObject(.)°É£¬µ±Ê±ÎÒÃDz»Ã÷°×ÊÇÔõô»ØÊ£¬Ï

75、;ÖÔÚÒѾ­»íÈ»¿ªÀÊ£¡Ô­À´ÊÇÀ೧ÐèÒªËüÀ´´´½¨×é¼þ¶ÔÏó£¡Ë

76、;äÈ»ÎÒÃÇÖ»ÊÇ´Ó×ÖÃæÒâ˼²Â³öÕâÒ»µã£¬µ«Êµ¼ÊÉÏÒ²ÕýÈçÎÒÃ

77、;ÇËùÔ¤ÁϵÄÄÇÑù£¬ÔÚCComClassFactory:CreateInstance(.)ÖУ¬ÎÒÃÇ¿´µ½ÁËm_pfnCreateInstance(pUnkOuter, riid, ppvObj);ÏÖÔÚÒ

78、7;Çж¼ÒѾ­Ã÷°×ÁË£¬ ATLΪÎÒÃÇ´´½¨À೧¶ø×÷µÄ²ã²ã°ü×°ÎÒÃǶ

79、¼ÒѾ­´ò¿ª£¬Ê£ÏµĴ´½¨×é¼þµÄ¹ý³ÌÒѾ­ÊÇÎÒÃǺÜÊìϤµÄ¹

80、ý³ÌÁË£¡ µ«ÊÇÏÖÔÚ»¹Ã»ÓÐÍ꣬ÎÒÃÇ»¹ÐèҪΪÀ೧¶ÔÏó²éѯÒ

81、;»¸öIUnknownÖ¸Õ룬Õâ¸öÖ¸Õë¾Í´æÔÚÎÒÃÇÔÚÇ°ÃæËù¿´µ½µÄpEntry->pCFÖС£ 6: STD

82、METHOD(QueryInterface)(REFIID iid, void * ppvObject)return _InternalQueryInterface(iid, ppvObject);ÏÖÔÚµ÷ÓõÄÊÇCComObjectCached:QueryInterface,ÖÁÓÚÕâ¸öÀàÓкÎÌØ&

83、#177;ðÖ®´¦,ÎÒÃÇÏÖÔÚºÃÏó»¹²»ÐèÒªÖªµÀ£¬ÎÒÒ²ºÜÀÛµÄ˵£¬ºÇºÇ

84、¡£ 7: HRESULT _InternalQueryInterface(REFIID iid, void* ppvObject) return InternalQueryInterface(this, _GetEntries(), iid, ppvObject); ËùÓеÄÀàµÄ_InternalQueryInterface(.)¶¼ÊÇÔÚBEGIN_COM_MAPÖж&#

85、168;ÒåµÄ¡£ CComObjectCachedûÓÐBEGIN_COM_MAPºê£¬ËùÒÔÏÖÔÚµ÷ÓõÄÊÇCComClassFactoryµÄ¡£×¢Òâ°ÑthisÖ

86、¸ÕëºÍ½Ó¿ÚÓ³ÉäÊý×é_GetEntries()´«¸øÁËInternalQueryInterface(), ÕâÊÇInternalQueryInterface(.)ʵÏÖ²éѯµÄÒÀ&#

87、190;Ý¡£ÔÚBEGIN_COM_MAP(x)Öж¨ÒåÁËÒ»¸ö¾²Ì¬µÄ½Ó¿ÚÓ³ÉäÊý×飺 _ATL_INTMAP_ENTRY _entries£»Ã¿Ò&

88、#187;¸ö½Ó¿ÚÓ³Éäºêʵ¼ÊÉ϶¼ÊÇÏòÕâ¸öÊý×éÖÐÔö¼ÓÁËÒ»Ïî¡£Ò»¸&

89、#246;½Ó¿ÚÓ³Éäºê°üÀ¨Èý¸ö²¿·Ö£º½Ó¿ÚµÄIIDºÅ¡¢Æ«ÒÆÖµ£¨´ó²¿·Ö

90、2;±ºòÏ£©¡¢ÐèÒªÖ´Ðеĺ¯Êý£¬¶ÔÒ»°ã½Ó¿ÚÀ´Ëµ²»ÓÃÖ´ÐÐÆä

91、3;ûº¯Êý¡£_GetEntries()¾ÍÊÇ·µ»ØÕâ¸öÊý×é¡£»¹ÓÐһЩϸ½ÚÎÊÌâÒÔºóÔÙ

92、03;µ¡£ 8: static HRESULT WINAPI InternalQueryInterface(void* pThis,const _ATL_INTMAP_ENTRY* pEntries, REFIID iid, void* ppvObject) . HRESULT hRes = AtlInternalQueryInterface(pThis, pEntries, iid, ppvObject);. ÏÖÔÚµ÷ÓõÄÊÇCCom

93、ObjectRootBase:InternalQueryInterface(.) 9:ÏÖÔÚÎÒÃÇÖÕÓÚµ½ÁËQueryInterfaceµÄ±Ç×æÁË¡£AtlInternalQueryInterface(.)ÊÇÕû¸ö²éѯ

94、;¹ý³ÌµÄÖյ㣬Ëü±éÀú½Ó¿ÚÓ³Éä±í£¬²¢¸ù¾ÝÿһÏî×ö³öÏàÓ¦

95、;µÄ¶¯×÷¡£ATLÖеÄÏûÏ¢Ó³ÉäºêÓкܶàÖÖ£¬ÏàÓ¦µÄ¶¯×÷Ò²ºÜ¶à£&#

96、172;µ«ÏÖÔÚÎÒÃDz»¹ÜÄÇЩ£¬ÏÖÔÚÎÒÃÇÒª×öµÄ¾ÍÊDz鵽һ¸öIUnknown½Ó

97、¿Ú£¬ÕâºÜÈÝÒ×£¬ÎÒÃÇÉõÖÁ²»ÐèÒª±éÀú½Ó¿ÚÓ³Éä±í¡£ ATLINLINE ATLAPI AtlInternalQueryIn

98、terface(void* pThis, const _ATL_INTMAP_ENTRY* pEntries, REFIID iid, void* ppvObject) ATLASSERT(pEntries->pFunc = _ATL_SIMPLEMAPENTRY); if (ppvObject = NULL) return E_POINTER; *ppvObject = NULL; if (InlineIsEqualUnknown(iid) / use first interface IUnknown* pUnk = (IUnknown*)(int)pThis+pEntries->

99、;dw); pUnk->AddRef(); *ppvObject = pUnk; return S_OK; . /»¹ÓÐÒ»´ó¶ÑÄØ£¬µ«ÏÖÔÚÓò»ÉÏ£¬¾Í½ÚÊ¡µã¿Õ¼ä

100、°É ÕâÀïÓÐÒ»¸ö¹æ¶¨£¬½Ó¿ÚÓ³Éä±íµÄµÚÒ»¸ö½Ó¿Ú±ØÐëÊÇ_ATL_SIMPLEENTRYÐ&

101、#205;µÄ¡£ÖÁÓÚΪʲôÓÐÕâ¸öÒªÇó£¬ÒÔ¼°pThis+pEntries->dwÊÇʲôÒâ˼£¬ÎÒÃ

102、9;ÒÔºóÔÙ˵°É£¬ÄÇÒ²ÊÇÒ»¶ÑÎÊÌâ¡£×ÜÖ®£¬ÎÒÃÇÏÖÔÚÈçÔ¸ÒÔ³

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104、;µãÒÔΪÎÒÃÇ¿ÉÒÔʤµÃ·µ»Øµ½µÚÒ»²½ÁË£¬µ«ÔÚATL:AtlModuleGetClassObject ´¦È´ÓÖÍ&

105、#163;ÁËÏÂÀ´£¬¿´¿´ËüµÄÔ´Â룬ԭÀ´»¹ÒªÔÙͨ¹ýÎÒÃǸջñµÃµÄIUnknow

106、nÖ¸Õë²éѯ IClassFactoryÖ¸Õë¡£ÓÖÊÇһͨÏàͬµÄµ÷Ó㬴ӵÚ6²½µ½µÚ9²½Ò&

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