744 lines
17 KiB
C++
744 lines
17 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1997.
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//
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// File: cdispmgr.cxx
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//
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// Contents: The dispatch manager -- a class to manage
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// multiple IDispatch-callable interfaces.
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//
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// Classes: CAggregateeDispMgr
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//
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// Functions: None external.
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//
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// History: ??-???-?? KrishnaG created
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// 07-Sep-97 t-blakej Commented, cleaned up, made
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// independent of ADSI.
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//
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// See cdispmgr.hxx for a more thorough description of the dispatch manager.
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//
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//----------------------------------------------------------------------------
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//
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// Since this class is useful outside of ADSI, some work has been taken to
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// make it not depend on any ADSI-specific code. It needs two ADSI header
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// files (cdispmgr.hxx and iprops.hxx), but they only depend on definitions
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// from standard system header files.
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//
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// To accomodate the current building method in ADSI, the precompiled
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// header "procs.hxx" is included; this includes all the necessary ADSI
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// header files and definitions. But for use outside of ADSI, the few
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// necessary header files are explicitly included below; see the comment by
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// "#ifndef ADsAssert".
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//
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// So if not compiling for ADSI, comment the following two lines out.
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//
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#include "iisext.hxx"
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#pragma hdrstop
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//////////////////////////////////////////////////////////////////////////////
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//
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// General helper definitions, routines, and inclusions:
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// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Begin Non-ADSI compile stuff
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//
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// This macro is defined by the precompiled header file, so the following
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// will only be included if not compiling for ADSI.
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//
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#ifndef ADsAssert
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//
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// Necessary system headers.
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//
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#define UNICODE
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#define _UNICODE
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#define _OLEAUT32_
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#define INC_OLE2
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#include <windows.h>
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#include <stdio.h>
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//
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// Necessary class definitions used by the dispatch manager.
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// Edit these paths if necessary.
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//
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#include "cdispmgr.hxx"
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#include "iprops.hxx"
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#endif // ADsAssert
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// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- End Non-ADSI compile stuff
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//
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// A simple assert function.
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//
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#if DBG == 1
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//+---------------------------------------------------------------------------
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//
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// Function: AssertEx
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//
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// Synopsis: Display assertion information.
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//
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// Effects: Called when an assertion is hit.
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//
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// History: Simplified from Win4AssertEx, to make this dispatch manager
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// not depend on other files.
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//
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//----------------------------------------------------------------------------
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static void
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AssertEx(char const *szFile, int iLine, char const *szMessage)
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{
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static char szAssertCaption[100];
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sprintf(szAssertCaption, "File: %s line %u, thread id %d",
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szFile, iLine, GetCurrentThreadId());
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if (IDCANCEL == MessageBoxA(
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NULL,
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(char *) szMessage,
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(LPSTR) szAssertCaption,
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MB_SETFOREGROUND |
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MB_TASKMODAL | MB_ICONEXCLAMATION | MB_OKCANCEL
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))
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{
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DebugBreak();
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}
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}
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# define DispMgrAssert(x) (void)((x) || (AssertEx(__FILE__, __LINE__, #x),0))
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#else
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# define AssertEx(f,l,m)
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# define DispMgrAssert(x)
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#endif
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//////////////////////////////////////////////////////////////////////////////
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//
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// Inline routines:
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static inline LONG
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getDispMgrId(DISPID InputDispId)
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{
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return (InputDispId & 0x7f000000) >> 24;
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}
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static inline LONG
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getTypeInfoId(DISPID InputDispId)
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{
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return (InputDispId & 0x00ff0000) >> 16;
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}
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static inline LONG
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getDispId(DISPID InputDispId)
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{
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return (InputDispId & 0x0000ffff);
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}
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static inline void
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MakeDISPID(
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LONG ExtensionId,
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LONG TypeInfoId,
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LONG DispId,
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DISPID *pResult
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)
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{
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if (DispId == DISPID_UNKNOWN){
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*pResult = DispId;
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}else if (TypeInfoId < 0 || TypeInfoId >= 0x100 ||
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DispId < 0 || DispId >= 0x10000){
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//
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// Might happen if some object has very large dispid's.
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// But we can't handle it if it does.
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//
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*pResult = DISPID_UNKNOWN;
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}
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else{
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*pResult = ((ExtensionId & 0xff) << 24) |((TypeInfoId & 0xff) << 16) | (DispId & 0xffff);
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}
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}
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static inline void
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MakeDISPIDs(
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LONG ExtensionId,
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LONG TypeInfoId,
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DISPID *rgdispid,
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unsigned int cNames
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)
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{
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for (unsigned int i = 0; i < cNames; i++)
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{
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MakeDISPID(ExtensionId, TypeInfoId, rgdispid[i], &rgdispid[i]);
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}
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Public methods:
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CAggregateeDispMgr::CAggregateeDispMgr()
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{
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_pTypeInfoEntry = NULL;
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_pDispidNewEnum = NULL;
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_dwTypeInfoId = 0;
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_pDispidValue = NULL;
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_pPropertyCache = NULL;
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_dwPropCacheID = 0;
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_dwExtensionID = 0;
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}
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CAggregateeDispMgr::~CAggregateeDispMgr()
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{
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PTYPEINFOENTRY pTypeInfoEntry = NULL;
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PTYPEINFOENTRY pTemp = NULL;
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ITypeInfo *pTypeInfo = NULL;
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pTypeInfoEntry = _pTypeInfoEntry;
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while (pTypeInfoEntry) {
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pTemp = pTypeInfoEntry;
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pTypeInfo = (ITypeInfo *)pTypeInfoEntry->ptypeinfo;
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pTypeInfo->Release();
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pTypeInfoEntry = pTemp->pNext;
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LocalFree(pTemp);
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}
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}
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void
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CAggregateeDispMgr::RegisterPropertyCache(IPropertyCache *pPropertyCache)
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{
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_pPropertyCache = pPropertyCache;
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_dwPropCacheID = gentypeinfoid();
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}
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STDMETHODIMP
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CAggregateeDispMgr::GetTypeInfoCount(unsigned int *pctinfo)
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{
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return E_NOTIMPL;
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}
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STDMETHODIMP
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CAggregateeDispMgr::GetTypeInfo(unsigned int itinfo, LCID lcid, ITypeInfo **pptinfo)
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{
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return E_NOTIMPL;
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}
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//
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// This works only for single names; if multiple names are
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// passed we die big time. This is help us get going using VB's _NewEnum
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//
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STDMETHODIMP
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CAggregateeDispMgr::GetIDsOfNames(REFIID iid, LPWSTR *rgszNames,
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unsigned int cNames, LCID lcid, DISPID *rgdispid)
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{
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PTYPEINFOENTRY pTypeInfo = NULL;
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HRESULT hr = DISP_E_UNKNOWNNAME;
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//
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// Try our list of TypeInfos.
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//
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pTypeInfo = _pTypeInfoEntry;
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while (pTypeInfo) {
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hr = DispGetIDsOfNames(((ITypeInfo *)pTypeInfo->ptypeinfo),
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rgszNames,
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cNames,
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rgdispid
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);
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if (SUCCEEDED(hr)) {
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//
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// aggregatee no longer needs to include extension id
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// in dispid.
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// TODO: change function to get rid of ext id = 0 during clean up
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//
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MakeDISPIDs(0, pTypeInfo->TypeInfoId, rgdispid, cNames);
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return hr;
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}
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pTypeInfo = pTypeInfo->pNext;
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}
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//
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// Try our property cache.
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//
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if (FAILED(hr) && _pPropertyCache) {
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hr = S_OK;
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for (DWORD dw = 0; dw < cNames; dw++) {
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if (FAILED(_pPropertyCache->locateproperty(rgszNames[dw],
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(PDWORD)(rgdispid + dw)))) {
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hr = DISP_E_UNKNOWNNAME;
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rgdispid[dw] = DISPID_UNKNOWN;
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}
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}
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if (SUCCEEDED(hr)) {
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//
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// aggregatee no longer needs to include extension id
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// in dispid.
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// TODO: change function to get rid of ext id = 0 during clean up
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//
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MakeDISPIDs(0, _dwPropCacheID, rgdispid, cNames);
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}
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}
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return hr;
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}
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STDMETHODIMP
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CAggregateeDispMgr::Invoke(DISPID dispidMember, REFIID iid, LCID lcid,
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unsigned short wFlags, DISPPARAMS *pdispparams, VARIANT *pvarResult,
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EXCEPINFO *pexcepinfo, unsigned int *puArgErr)
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{
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//
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// Clear the error object before we call invoke.
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//
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SetErrorInfo(0, NULL);
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return TypeInfoInvoke(dispidMember,
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iid,
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lcid,
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wFlags,
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pdispparams,
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pvarResult,
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pexcepinfo,
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puArgErr
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);
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Private methods and helper functions:
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void *
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CAggregateeDispMgr::getInterfacePtr(LONG TypeInfoId)
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{
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PTYPEINFOENTRY pTypeInfoEntry = FindTypeInfoEntry(TypeInfoId);
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return (pTypeInfoEntry ? pTypeInfoEntry->pInterfacePointer : NULL);
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}
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ITypeInfo *
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CAggregateeDispMgr::getTypeInfo(LONG TypeInfoId)
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{
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PTYPEINFOENTRY pTypeInfoEntry = FindTypeInfoEntry(TypeInfoId);
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return (ITypeInfo *)(pTypeInfoEntry ? pTypeInfoEntry->ptypeinfo : NULL);
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}
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PTYPEINFOENTRY
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CAggregateeDispMgr::FindTypeInfoEntry(LONG TypeInfoId)
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{
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PTYPEINFOENTRY pTypeInfoEntry;
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pTypeInfoEntry = _pTypeInfoEntry;
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while (pTypeInfoEntry) {
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if (pTypeInfoEntry->TypeInfoId == TypeInfoId) {
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return pTypeInfoEntry;
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}
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pTypeInfoEntry = pTypeInfoEntry->pNext;
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}
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return NULL;
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}
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PTYPEINFOENTRY
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CAggregateeDispMgr::FindTypeInfo(void *pTypeInfo)
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{
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PTYPEINFOENTRY pTypeInfoEntry;
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pTypeInfoEntry = _pTypeInfoEntry;
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while (pTypeInfoEntry) {
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if (pTypeInfoEntry->ptypeinfo == pTypeInfo) {
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return pTypeInfoEntry;
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}
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pTypeInfoEntry = pTypeInfoEntry->pNext;
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}
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return NULL;
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}
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HRESULT
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CAggregateeDispMgr::AddTypeInfo(void *ptypeinfo, void *pIntfptr)
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{
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PTYPEINFOENTRY pTypeInfoEntry = NULL;
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HRESULT hr;
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if (FindTypeInfo(ptypeinfo)) {
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return E_FAIL;
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}
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pTypeInfoEntry = (PTYPEINFOENTRY)LocalAlloc(LPTR,sizeof(TYPEINFOENTRY));
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if (!pTypeInfoEntry) {
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BAIL_ON_FAILURE(hr = E_OUTOFMEMORY);
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}
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pTypeInfoEntry->ptypeinfo = ptypeinfo;
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pTypeInfoEntry->TypeInfoId = gentypeinfoid();
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pTypeInfoEntry->pInterfacePointer = pIntfptr;
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pTypeInfoEntry->pNext = _pTypeInfoEntry;
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_pTypeInfoEntry = pTypeInfoEntry;
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return S_OK;
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error:
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return hr;
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}
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STDMETHODIMP
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CAggregateeDispMgr::TypeInfoInvoke(DISPID dispidMember, REFIID iid, LCID lcid,
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unsigned short wFlags, DISPPARAMS *pdispparams, VARIANT *pvarResult,
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EXCEPINFO *pexcepinfo, unsigned int *puArgErr)
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{
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void *pInterfacePtr = NULL;
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DISPID dispid = 0;
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DISPID typeinfoid = 0;
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ITypeInfo *pTypeInfo = NULL;
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HRESULT hr = S_OK;
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if (dispidMember <= 0) {
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//
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// One of the special DISPIDs.
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//
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// If we have an interface pointer for it, use that.
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// If we don't, and we have a base IDispatch pointer,
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// pass it to the base pointer's Invoke() method.
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// If we don't, and we don't have a base IDispatch pointer,
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// return failure.
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//
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dispid = dispidMember;
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switch (dispid) {
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case DISPID_VALUE:
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if (_pDispidValue) {
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pTypeInfo = (ITypeInfo *)_pDispidValue->ptypeinfo;
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pInterfacePtr = _pDispidValue->pInterfacePointer;
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}
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break;
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case DISPID_NEWENUM:
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if (_pDispidNewEnum) {
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pTypeInfo = (ITypeInfo *)_pDispidNewEnum->ptypeinfo;
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pInterfacePtr = _pDispidNewEnum->pInterfacePointer;
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}
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break;
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default:
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break;
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}
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if (!pInterfacePtr) {
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BAIL_ON_FAILURE(hr = DISP_E_MEMBERNOTFOUND);
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}else {
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//
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// Fill in the special case scenarios here
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//
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hr = DispInvoke(
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pInterfacePtr,
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pTypeInfo,
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dispid,
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wFlags,
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pdispparams,
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pvarResult,
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pexcepinfo,
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puArgErr
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);
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return(hr);
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}
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} else {
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//
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// A regular DISPID of ours.
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//
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typeinfoid = getTypeInfoId(dispidMember);
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dispid = getDispId(dispidMember);
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if ((_pPropertyCache == NULL) || (typeinfoid != _dwPropCacheID)) {
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pInterfacePtr = getInterfacePtr(typeinfoid);
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pTypeInfo = getTypeInfo(typeinfoid);
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if (!pTypeInfo)
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//
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// Shouldn't happen.
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//
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BAIL_ON_FAILURE(hr = DISP_E_MEMBERNOTFOUND);
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}
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if ((_pPropertyCache == NULL) || (typeinfoid != _dwPropCacheID)) {
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//
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// A regular interface.
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//
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hr = DispInvoke(
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pInterfacePtr,
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pTypeInfo,
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dispid,
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wFlags,
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pdispparams,
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pvarResult,
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pexcepinfo,
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puArgErr
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);
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}else {
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//
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// A "dynamic DISPID", for the property cache.
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//
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hr = AggregateeDynamicDispidInvoke(
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_pPropertyCache,
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dispid,
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wFlags,
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pdispparams,
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pvarResult
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);
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}
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}
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error:
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return hr;
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}
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HRESULT
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AggregateeDynamicDispidInvoke(
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IPropertyCache * pPropertyCache,
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DISPID dispid,
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unsigned short wFlags,
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DISPPARAMS *pdispparams,
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VARIANT * pvarResult
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)
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{
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HRESULT hr = S_OK;
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if (!pPropertyCache) {
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return(E_INVALIDARG);
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}
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if (wFlags & DISPATCH_PROPERTYGET) {
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if (!pvarResult) {
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BAIL_ON_FAILURE(hr = E_INVALIDARG);
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}
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hr = pPropertyCache->getproperty((DWORD)dispid,pvarResult);
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if (FAILED(hr)) {
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#if 1
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// This lets us return S_OK and a VT_EMPTY variant if
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// there's no data. #if this out to disable it.
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V_VT(pvarResult) = VT_EMPTY;
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hr = S_OK;
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#else
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V_VT(pvarResult) = VT_ERROR;
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#endif
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}
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}else if (wFlags & DISPATCH_PROPERTYPUT) {
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//
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// only handles one argument.
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//
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if (pdispparams[0].cArgs != 1){
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hr = DISP_E_BADPARAMCOUNT;
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}
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else {
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hr = pPropertyCache->putproperty(
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(DWORD)dispid,
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pdispparams[0].rgvarg[0]
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);
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}
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}else {
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hr = E_INVALIDARG;
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}
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error:
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return(hr);
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}
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HRESULT
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CAggregateeDispMgr::MarkAsNewEnum(void *pTypeInfo)
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{
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PTYPEINFOENTRY pTypeInfoEntry;
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if (!pTypeInfo) {
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return E_FAIL;
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}
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if (!(pTypeInfoEntry = FindTypeInfo(pTypeInfo))) {
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return E_FAIL;
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}
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_pDispidNewEnum = pTypeInfoEntry;
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return S_OK;
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}
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HRESULT
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CAggregateeDispMgr::MarkAsItem(void *pTypeInfo)
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{
|
|
PTYPEINFOENTRY pTypeInfoEntry;
|
|
|
|
if (!pTypeInfo) {
|
|
return E_FAIL;
|
|
}
|
|
if (!(pTypeInfoEntry = FindTypeInfo(pTypeInfo))) {
|
|
return E_FAIL;
|
|
}
|
|
_pDispidValue = pTypeInfoEntry;
|
|
return S_OK;
|
|
}
|
|
|
|
LONG
|
|
CAggregateeDispMgr::gentypeinfoid()
|
|
{
|
|
//
|
|
// This would mean we've registered 65536 IDispatch methods
|
|
// in this object's dispatch manager. We lose.
|
|
//
|
|
DispMgrAssert(_dwTypeInfoId < 0xffff);
|
|
|
|
return (_dwTypeInfoId++);
|
|
}
|
|
|
|
typedef struct _typeinfotable
|
|
{
|
|
GUID iid;
|
|
ITypeInfo * pTypeInfo;
|
|
struct _typeinfotable *pNext;
|
|
}TYPEINFO_TABLE, *PTYPEINFO_TABLE;
|
|
|
|
|
|
ITypeInfo *
|
|
AggregateeFindTypeInfo(
|
|
PTYPEINFO_TABLE pTypeInfoTable,
|
|
REFIID iid
|
|
)
|
|
{
|
|
PTYPEINFO_TABLE pTemp = NULL;
|
|
|
|
pTemp = pTypeInfoTable;
|
|
|
|
while (pTemp) {
|
|
if (IsEqualIID(iid, pTemp->iid)) {
|
|
return pTemp->pTypeInfo;
|
|
}
|
|
pTemp = pTemp->pNext;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
//+------------------------------------------------------------------------
|
|
//
|
|
// Function: LoadTypeInfo
|
|
//
|
|
// Synopsis: Loads a typeinfo from a registered typelib.
|
|
//
|
|
// Arguments: [clsidTL] -- TypeLib GUID
|
|
// [clsidTI] -- TypeInfo GUID
|
|
// [ppTI] -- Resulting typeInfo
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
//-------------------------------------------------------------------------
|
|
HRESULT
|
|
AggregateeLoadTypeInfo(CLSID clsidTL, CLSID clsidTI, LPTYPEINFO *ppTI)
|
|
{
|
|
HRESULT hr;
|
|
ITypeLib * pTL;
|
|
|
|
DispMgrAssert(ppTI);
|
|
*ppTI = NULL;
|
|
hr = LoadRegTypeLib(clsidTL, 1, 0, LOCALE_SYSTEM_DEFAULT, &pTL);
|
|
if (hr)
|
|
return hr;
|
|
|
|
hr = pTL->GetTypeInfoOfGuid(clsidTI, ppTI);
|
|
pTL->Release();
|
|
return hr;
|
|
}
|
|
|
|
HRESULT
|
|
CAggregateeDispMgr::LoadTypeInfoEntry(
|
|
REFIID libid,
|
|
REFIID iid,
|
|
void * pIntf,
|
|
DISPID SpecialId
|
|
)
|
|
{
|
|
ITypeInfo * pTypeInfo = NULL;
|
|
HRESULT hr;
|
|
|
|
hr = AggregateeLoadTypeInfo(libid, iid, &pTypeInfo);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
hr = AddTypeInfo(pTypeInfo, pIntf);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
if (SpecialId == -4) {
|
|
hr = MarkAsNewEnum(pTypeInfo);
|
|
} else if (SpecialId == DISPID_VALUE) {
|
|
hr = MarkAsItem(pTypeInfo);
|
|
}
|
|
|
|
return S_OK;
|
|
|
|
error:
|
|
if (pTypeInfo)
|
|
pTypeInfo->Release();
|
|
|
|
return hr;
|
|
}
|
|
|
|
//
|
|
// Kept for backwards compatibility.
|
|
//
|
|
HRESULT
|
|
LoadTypeInfoEntry(
|
|
CAggregateeDispMgr *pDispMgr,
|
|
REFIID libid,
|
|
REFIID iid,
|
|
void * pIntf,
|
|
DISPID SpecialId
|
|
)
|
|
{
|
|
return pDispMgr->LoadTypeInfoEntry(libid, iid, pIntf, SpecialId);
|
|
}
|
|
|
|
HRESULT
|
|
CAggregateeDispMgr::InitializeDispMgr(
|
|
DWORD dwExtensionID
|
|
)
|
|
{
|
|
if (dwExtensionID > 255) {
|
|
return(E_FAIL);
|
|
}
|
|
_dwExtensionID = dwExtensionID;
|
|
|
|
return(S_OK);
|
|
}
|