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Understanding Custom Marshaling Part 1

, 18 Aug 2006
Learn the fundamental principles of COM custom marshaling by code examples.
Prize winner in Competition "MFC/C++ Jul 2006"
custommarshaling01_src.zip
utilities
BasicSample01
Interfaces
Implementations
Clients
BasicSample01Interfaces
BasicSample01Interfaces.aps
BasicSample01Interfaces.def
BasicSample01Interfaces.ncb
BasicSample01Interfaces.rgs
BasicSample01Interfacesps.def
Immutable.rgs
ImmutableObjectFactory.rgs
BasicSample01Interfaces.vcproj.vspscc
BasicSample01InterfacesPS.vcproj.vspscc
BasicSample01InterfacesImpl
BasicSample01InterfacesImpl.aps
BasicSample01InterfacesImpl.def
BasicSample01InterfacesImpl.rgs
BasicSample01InterfacesImplps.def
ImmutableImpl.rgs
ImmutableObjectFactoryImpl.rgs
BasicSample01InterfacesImpl.ncb
BasicSample01InterfacesImpl.vcproj.vspscc
BasicSample01InterfacesImplPS.vcproj.vspscc
VCConsoleClient01
VCConsoleClient03
VCConsoleClient02
VCConsoleClient01.ncb
VCConsoleClient03.ncb
VCConsoleClient02.ncb

/* this ALWAYS GENERATED file contains the proxy stub code */


 /* File created by MIDL compiler version 6.00.0361 */
/* at Sat Aug 19 02:54:10 2006
 */
/* Compiler settings for .\BasicSample01InterfacesImpl.idl:
    Oicf, W1, Zp8, env=Win32 (32b run)
    protocol : dce , ms_ext, c_ext, robust
    error checks: allocation ref bounds_check enum stub_data 
    VC __declspec() decoration level: 
         __declspec(uuid()), __declspec(selectany), __declspec(novtable)
         DECLSPEC_UUID(), MIDL_INTERFACE()
*/
//@@MIDL_FILE_HEADING(  )

#if !defined(_M_IA64) && !defined(_M_AMD64)


#pragma warning( disable: 4049 )  /* more than 64k source lines */
#if _MSC_VER >= 1200
#pragma warning(push)
#endif
#pragma warning( disable: 4100 ) /* unreferenced arguments in x86 call */
#pragma warning( disable: 4211 )  /* redefine extent to static */
#pragma warning( disable: 4232 )  /* dllimport identity*/
#define USE_STUBLESS_PROXY


/* verify that the <rpcproxy.h> version is high enough to compile this file*/
#ifndef __REDQ_RPCPROXY_H_VERSION__
#define __REQUIRED_RPCPROXY_H_VERSION__ 475
#endif


#include "rpcproxy.h"
#ifndef __RPCPROXY_H_VERSION__
#error this stub requires an updated version of <rpcproxy.h>
#endif // __RPCPROXY_H_VERSION__


#include "BasicSample01InterfacesImpl.h"

#define TYPE_FORMAT_STRING_SIZE   3                                 
#define PROC_FORMAT_STRING_SIZE   1                                 
#define TRANSMIT_AS_TABLE_SIZE    0            
#define WIRE_MARSHAL_TABLE_SIZE   0            

typedef struct _MIDL_TYPE_FORMAT_STRING
    {
    short          Pad;
    unsigned char  Format[ TYPE_FORMAT_STRING_SIZE ];
    } MIDL_TYPE_FORMAT_STRING;

typedef struct _MIDL_PROC_FORMAT_STRING
    {
    short          Pad;
    unsigned char  Format[ PROC_FORMAT_STRING_SIZE ];
    } MIDL_PROC_FORMAT_STRING;


static RPC_SYNTAX_IDENTIFIER  _RpcTransferSyntax = 
{{0x8A885D04,0x1CEB,0x11C9,{0x9F,0xE8,0x08,0x00,0x2B,0x10,0x48,0x60}},{2,0}};


extern const MIDL_TYPE_FORMAT_STRING __MIDL_TypeFormatString;
extern const MIDL_PROC_FORMAT_STRING __MIDL_ProcFormatString;


extern const MIDL_STUB_DESC Object_StubDesc;


extern const MIDL_SERVER_INFO IImmutableImpl_ServerInfo;
extern const MIDL_STUBLESS_PROXY_INFO IImmutableImpl_ProxyInfo;


extern const MIDL_STUB_DESC Object_StubDesc;


extern const MIDL_SERVER_INFO IImmutableObjectFactoryImpl_ServerInfo;
extern const MIDL_STUBLESS_PROXY_INFO IImmutableObjectFactoryImpl_ProxyInfo;



#if !defined(__RPC_WIN32__)
#error  Invalid build platform for this stub.
#endif

#if !(TARGET_IS_NT50_OR_LATER)
#error You need a Windows 2000 or later to run this stub because it uses these features:
#error   /robust command line switch.
#error However, your C/C++ compilation flags indicate you intend to run this app on earlier systems.
#error This app will die there with the RPC_X_WRONG_STUB_VERSION error.
#endif


static const MIDL_PROC_FORMAT_STRING __MIDL_ProcFormatString =
    {
        0,
        {

			0x0
        }
    };

static const MIDL_TYPE_FORMAT_STRING __MIDL_TypeFormatString =
    {
        0,
        {
			NdrFcShort( 0x0 ),	/* 0 */

			0x0
        }
    };


/* Object interface: IUnknown, ver. 0.0,
   GUID={0x00000000,0x0000,0x0000,{0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}} */


/* Object interface: IDispatch, ver. 0.0,
   GUID={0x00020400,0x0000,0x0000,{0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}} */


/* Object interface: IImmutableImpl, ver. 0.0,
   GUID={0x9E013477,0x2A51,0x490C,{0xB6,0x59,0xA7,0xF6,0xD8,0xC4,0xA0,0x32}} */

#pragma code_seg(".orpc")
static const unsigned short IImmutableImpl_FormatStringOffsetTable[] =
    {
    (unsigned short) -1,
    (unsigned short) -1,
    (unsigned short) -1,
    (unsigned short) -1,
    0
    };

static const MIDL_STUBLESS_PROXY_INFO IImmutableImpl_ProxyInfo =
    {
    &Object_StubDesc,
    __MIDL_ProcFormatString.Format,
    &IImmutableImpl_FormatStringOffsetTable[-3],
    0,
    0,
    0
    };


static const MIDL_SERVER_INFO IImmutableImpl_ServerInfo = 
    {
    &Object_StubDesc,
    0,
    __MIDL_ProcFormatString.Format,
    &IImmutableImpl_FormatStringOffsetTable[-3],
    0,
    0,
    0,
    0};
CINTERFACE_PROXY_VTABLE(7) _IImmutableImplProxyVtbl = 
{
    0,
    &IID_IImmutableImpl,
    IUnknown_QueryInterface_Proxy,
    IUnknown_AddRef_Proxy,
    IUnknown_Release_Proxy ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetTypeInfoCount */ ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetTypeInfo */ ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetIDsOfNames */ ,
    0 /* IDispatch_Invoke_Proxy */
};


static const PRPC_STUB_FUNCTION IImmutableImpl_table[] =
{
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION
};

CInterfaceStubVtbl _IImmutableImplStubVtbl =
{
    &IID_IImmutableImpl,
    &IImmutableImpl_ServerInfo,
    7,
    &IImmutableImpl_table[-3],
    CStdStubBuffer_DELEGATING_METHODS
};


/* Object interface: IImmutableObjectFactoryImpl, ver. 0.0,
   GUID={0xB1E57E5C,0xEAB1,0x4F1A,{0xAD,0xFB,0xDA,0x6A,0x4A,0x6C,0x4E,0x5F}} */

#pragma code_seg(".orpc")
static const unsigned short IImmutableObjectFactoryImpl_FormatStringOffsetTable[] =
    {
    (unsigned short) -1,
    (unsigned short) -1,
    (unsigned short) -1,
    (unsigned short) -1,
    0
    };

static const MIDL_STUBLESS_PROXY_INFO IImmutableObjectFactoryImpl_ProxyInfo =
    {
    &Object_StubDesc,
    __MIDL_ProcFormatString.Format,
    &IImmutableObjectFactoryImpl_FormatStringOffsetTable[-3],
    0,
    0,
    0
    };


static const MIDL_SERVER_INFO IImmutableObjectFactoryImpl_ServerInfo = 
    {
    &Object_StubDesc,
    0,
    __MIDL_ProcFormatString.Format,
    &IImmutableObjectFactoryImpl_FormatStringOffsetTable[-3],
    0,
    0,
    0,
    0};
CINTERFACE_PROXY_VTABLE(7) _IImmutableObjectFactoryImplProxyVtbl = 
{
    0,
    &IID_IImmutableObjectFactoryImpl,
    IUnknown_QueryInterface_Proxy,
    IUnknown_AddRef_Proxy,
    IUnknown_Release_Proxy ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetTypeInfoCount */ ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetTypeInfo */ ,
    0 /* (void *) (INT_PTR) -1 /* IDispatch::GetIDsOfNames */ ,
    0 /* IDispatch_Invoke_Proxy */
};


static const PRPC_STUB_FUNCTION IImmutableObjectFactoryImpl_table[] =
{
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION,
    STUB_FORWARDING_FUNCTION
};

CInterfaceStubVtbl _IImmutableObjectFactoryImplStubVtbl =
{
    &IID_IImmutableObjectFactoryImpl,
    &IImmutableObjectFactoryImpl_ServerInfo,
    7,
    &IImmutableObjectFactoryImpl_table[-3],
    CStdStubBuffer_DELEGATING_METHODS
};

static const MIDL_STUB_DESC Object_StubDesc = 
    {
    0,
    NdrOleAllocate,
    NdrOleFree,
    0,
    0,
    0,
    0,
    0,
    __MIDL_TypeFormatString.Format,
    1, /* -error bounds_check flag */
    0x50002, /* Ndr library version */
    0,
    0x6000169, /* MIDL Version 6.0.361 */
    0,
    0,
    0,  /* notify & notify_flag routine table */
    0x1, /* MIDL flag */
    0, /* cs routines */
    0,   /* proxy/server info */
    0   /* Reserved5 */
    };

const CInterfaceProxyVtbl * _BasicSample01InterfacesImpl_ProxyVtblList[] = 
{
    ( CInterfaceProxyVtbl *) &_IImmutableObjectFactoryImplProxyVtbl,
    ( CInterfaceProxyVtbl *) &_IImmutableImplProxyVtbl,
    0
};

const CInterfaceStubVtbl * _BasicSample01InterfacesImpl_StubVtblList[] = 
{
    ( CInterfaceStubVtbl *) &_IImmutableObjectFactoryImplStubVtbl,
    ( CInterfaceStubVtbl *) &_IImmutableImplStubVtbl,
    0
};

PCInterfaceName const _BasicSample01InterfacesImpl_InterfaceNamesList[] = 
{
    "IImmutableObjectFactoryImpl",
    "IImmutableImpl",
    0
};

const IID *  _BasicSample01InterfacesImpl_BaseIIDList[] = 
{
    &IID_IDispatch,
    &IID_IDispatch,
    0
};


#define _BasicSample01InterfacesImpl_CHECK_IID(n)	IID_GENERIC_CHECK_IID( _BasicSample01InterfacesImpl, pIID, n)

int __stdcall _BasicSample01InterfacesImpl_IID_Lookup( const IID * pIID, int * pIndex )
{
    IID_BS_LOOKUP_SETUP

    IID_BS_LOOKUP_INITIAL_TEST( _BasicSample01InterfacesImpl, 2, 1 )
    IID_BS_LOOKUP_RETURN_RESULT( _BasicSample01InterfacesImpl, 2, *pIndex )
    
}

const ExtendedProxyFileInfo BasicSample01InterfacesImpl_ProxyFileInfo = 
{
    (PCInterfaceProxyVtblList *) & _BasicSample01InterfacesImpl_ProxyVtblList,
    (PCInterfaceStubVtblList *) & _BasicSample01InterfacesImpl_StubVtblList,
    (const PCInterfaceName * ) & _BasicSample01InterfacesImpl_InterfaceNamesList,
    (const IID ** ) & _BasicSample01InterfacesImpl_BaseIIDList,
    & _BasicSample01InterfacesImpl_IID_Lookup, 
    2,
    2,
    0, /* table of [async_uuid] interfaces */
    0, /* Filler1 */
    0, /* Filler2 */
    0  /* Filler3 */
};
#if _MSC_VER >= 1200
#pragma warning(pop)
#endif


#endif /* !defined(_M_IA64) && !defined(_M_AMD64)*/

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Lim Bio Liong
Web Developer
Singapore Singapore
Lim Bio Liong is a Specialist at a leading Software House in Singapore.
 
Bio has been in software development for over 10 years. He specialises in C/C++ programming and Windows software development.
 
Bio has also done device-driver development and enjoys low-level programming. Bio has recently picked up C# programming and has been researching in this area.

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