95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
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//=======================================================================
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//
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// Copyright (C) Microsoft Corporation, 1995 - 1999 All Rights Reserved.
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//
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// File: CatHelp.cpp
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//
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// contains the Component Category helper functions.
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//
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//=======================================================================
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#include "stdafx.h"
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#include "comcat.h"
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EXTERN_C const CATID CATID_SafeForScripting;
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EXTERN_C const CATID CATID_SafeForInitializing;
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// Helper function to create a component category and associated description
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HRESULT CreateComponentCategory(CATID catid, WCHAR* catDescription)
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{
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ICatRegister* pcr = NULL ;
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HRESULT hr = S_OK ;
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hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr,
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NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);
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if (FAILED(hr))
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return hr;
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// Make sure the HKCR\Component Categories\{..catid...}
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// key is registered
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CATEGORYINFO catinfo;
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catinfo.catid = catid;
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catinfo.lcid = 0x0409 ; // english
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// Make sure the provided description is not too long.
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// Only copy the first 127 characters if it is
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int len = wcslen(catDescription);
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if (len>127)
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len = 127;
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wcsncpy(catinfo.szDescription, catDescription, len);
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// Make sure the description is null terminated
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catinfo.szDescription[len] = '\0';
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hr = pcr->RegisterCategories(1, &catinfo);
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pcr->Release();
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return hr;
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}
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// Helper function to register a CLSID as belonging to a component category
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HRESULT RegisterCLSIDInCategory(REFCLSID clsid, CATID catid)
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{
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// Register your component categories information.
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ICatRegister* pcr = NULL ;
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HRESULT hr = S_OK ;
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hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr,
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NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);
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if (SUCCEEDED(hr))
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{
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// Register this category as being "implemented" by
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// the class.
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CATID rgcatid[1] ;
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rgcatid[0] = catid;
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hr = pcr->RegisterClassImplCategories(clsid, 1, rgcatid);
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}
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if (pcr != NULL)
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pcr->Release();
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return hr;
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}
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// Helper function to unregister a CLSID as belonging to a component category
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HRESULT UnRegisterCLSIDInCategory(REFCLSID clsid, CATID catid)
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{
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ICatRegister* pcr = NULL ;
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HRESULT hr = S_OK ;
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hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr,
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NULL, CLSCTX_INPROC_SERVER, IID_ICatRegister, (void**)&pcr);
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if (SUCCEEDED(hr))
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{
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// Unregister this category as being "implemented" by
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// the class.
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CATID rgcatid[1] ;
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rgcatid[0] = catid;
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hr = pcr->UnRegisterClassImplCategories(clsid, 1, rgcatid);
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}
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if (pcr != NULL)
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pcr->Release();
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return hr;
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}
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