44 lines
2.4 KiB
C
44 lines
2.4 KiB
C
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#ifndef __COMCATEX_H__
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#define __COMCATEX_H__
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#include <comcat.h>
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//-------------------------------------------------------------------------//
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// Retrieves cache-aware enumerator over classes which require or
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// implement the specified component catagory(ies).
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// See docs on ICatInformation::EnumClassesOfCategories() for more information
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// on arguments and usage.
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STDMETHODIMP SHEnumClassesOfCategories(
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ULONG cImplemented, //Number of category IDs in the rgcatidImpl array
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CATID rgcatidImpl[], //Array of category identifiers
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ULONG cRequired, //Number of category IDs in the rgcatidReq array
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CATID rgcatidReq[], //Array of category identifiers
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IEnumGUID** ppenumGUID ) ;//Address to receive a pointer to an IEnumGUID interface
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//-------------------------------------------------------------------------//
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// Determines whether a cache exists for the indicated CATID.
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// If bImplementing is TRUE, the function checks for a cache of
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// implementing classes; otherwise the function checks for a cache of
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// requiring classes. Returns S_OK if the cache exists, S_FALSE if
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// it does not exist, or an error indicating a failure occurred.
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STDMETHODIMP SHDoesComCatCacheExist( REFCATID refcatid, BOOL bImplementing ) ;
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//-------------------------------------------------------------------------//
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// Caches implementing and/or requiring classes for the specified categories
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// See docs on ICatInformation::EnumClassesOfCategories() for more information
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// on arguments.
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STDMETHODIMP SHWriteClassesOfCategories(
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ULONG cImplemented, //Number of category IDs in the rgcatidImpl array
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CATID rgcatidImpl[], //Array of category identifiers
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ULONG cRequired, //Number of category IDs in the rgcatidReq array
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CATID rgcatidReq[], //Array of category identifiers
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BOOL bForceUpdate, //TRUE: Unconditionally update the cache;
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//otherwise create cache iif doesn't exist.
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BOOL bWait, //If FALSE, the function returns immediately and the
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// caching occurs asynchronously; otherwise
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// the function returns only after the caching
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// operation has completed.
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HANDLE hEvent ) ; //(optional) Event to be signalled when cache update is done
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#endif __COMCATEX_H__
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