IResultOwnerData::CacheHint method (mmc.h)

Article
10/13/2021

The IResultOwnerData::CacheHint method is called when a virtual list is about to request display information for a range of items, allowing the snap-in to collect the information ahead of time in cases where an optimization can be made.

Syntax

HRESULT CacheHint(
  [in] int nStartIndex,
  [in] int nEndIndex
);

Parameters

[in] nStartIndex

An index of the first item to be requested.

[in] nEndIndex

An index of the last item to be requested.

Return value

This method can return one of these values.

Remarks

MMC calls CacheHint for a virtual list view to assist in optimizing how the snap-in caches requested item data to improve retrieval performance. The arguments passed in the call provide inclusive index values for a range of items that MMC recommends be cached. When CacheHint is called, the snap-in must be prepared to load the cache with item information for the requested range so that the information will be readily available when its IComponent::GetDisplayInfo method is called later.

There is no certainty that all the items will be requested or that other items will not be requested.

Requirements

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Target Platform	Windows
Header	mmc.h

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