113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: msimodul.h
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//
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//--------------------------------------------------------------------------
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// msimodl.h : header file for class CMsiModule
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//
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#ifndef __MSIMODL_H__
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#define __MSIMODL_H__
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#include <msi.h>
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#include <msiquery.h>
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class CMsiModule
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{
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typedef UINT (*EnumQualCompFncPtr)(LPTSTR, DWORD, LPTSTR, DWORD*, LPTSTR, DWORD*);
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typedef UINT (*ProvideQualCompFncPtr)(LPCTSTR, LPCTSTR, DWORD, LPTSTR, DWORD*);
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typedef UINT (*LocateCompFncPtr)(LPCTSTR, LPTSTR, DWORD*);
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public:
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CMsiModule(void) : hMsiDll(NULL), pfnEnumQualComp(NULL), pfnProvideQualComp(NULL)
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{
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hMsiDll = LoadLibrary(TEXT("msi.dll"));
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if (hMsiDll != NULL)
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{
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#ifdef _UNICODE
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pfnEnumQualComp = reinterpret_cast<EnumQualCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiEnumComponentQualifiersW"));
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ASSERT(pfnEnumQualComp != NULL);
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pfnProvideQualComp = reinterpret_cast<ProvideQualCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiProvideQualifiedComponentW"));
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ASSERT(pfnProvideQualComp != NULL);
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pfnLocateComp = reinterpret_cast<LocateCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiLocateComponentW"));
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ASSERT(pfnLocateComp != NULL);
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#else
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pfnEnumQualComp = reinterpret_cast<EnumQualCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiEnumComponentQualifiersA"));
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ASSERT(pfnEnumQualComp != NULL);
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pfnProvideQualComp = reinterpret_cast<ProvideQualCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiProvideQualifiedComponentA"));
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ASSERT(pfnProvideQualComp != NULL);
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pfnLocateComp = reinterpret_cast<LocateCompFncPtr>
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(GetProcAddress(hMsiDll, "MsiLocateComponentA"));
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ASSERT(pfnLocateComp != NULL);
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#endif // _UNICODE
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}
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}
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~CMsiModule(void) { if (hMsiDll != NULL) FreeLibrary(hMsiDll); }
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BOOL IsPresent(void) { return (hMsiDll != NULL); }
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UINT EnumComponentQualifiers( LPTSTR szComponent, DWORD iIndex,
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LPTSTR lpQualifierBuf, DWORD *pcchQualifierBuf,
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LPTSTR lpApplicationDataBuf, DWORD *pcchApplicationDataBuf)
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{
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if (pfnEnumQualComp == NULL)
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return ERROR_CALL_NOT_IMPLEMENTED;
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return pfnEnumQualComp(szComponent, iIndex, lpQualifierBuf, pcchQualifierBuf,
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lpApplicationDataBuf, pcchApplicationDataBuf);
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}
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UINT ProvideQualifiedComponent( LPCTSTR szComponent, LPCTSTR szQualifier, DWORD dwInstallMode,
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LPTSTR lpPathBuf, DWORD *pcchPathBuf)
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{
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if (pfnProvideQualComp == NULL)
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return ERROR_CALL_NOT_IMPLEMENTED;
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return pfnProvideQualComp(szComponent, szQualifier, dwInstallMode, lpPathBuf, pcchPathBuf);
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}
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UINT LocateComponent( LPCTSTR szComponent, LPTSTR lpPathBuf, DWORD *pcchPathBuf)
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{
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if (pfnLocateComp == NULL)
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return ERROR_CALL_NOT_IMPLEMENTED;
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return pfnLocateComp(szComponent, lpPathBuf, pcchPathBuf);
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}
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private:
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HMODULE hMsiDll;
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EnumQualCompFncPtr pfnEnumQualComp;
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ProvideQualCompFncPtr pfnProvideQualComp;
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LocateCompFncPtr pfnLocateComp;
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};
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CMsiModule& MsiModule()
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{
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static CMsiModule MsiModuleInstance;
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return MsiModuleInstance;
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}
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#endif // __MSIMODL_H__
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