IUIAutomationTreeWalker::GetPreviousSiblingBuildCache Method

Retrieves the previous sibling element of the specified UI Automation element, and caches properties and control patterns.

Syntax


HRESULT GetPreviousSiblingBuildCache(          IUIAutomationElement *element,
    IUIAutomationCacheRequest *cacheRequest,
    IUIAutomationElement **previous
);

Parameters

element
[in] The address of the IUIAutomationElement interface of the element for which to retrieve the previous sibling.
cacheRequest
[in] The address of the IUIAutomationCacheRequest interface of a cache request that specifies the properties and control patterns to cache on the returned element.
previous
[out, retval] The address of a variable that receives a pointer to the IUIAutomationElement interface of the previous sibling element, or NULL if there is no sibling element.

Return Value

Returns S_OK if successful, or an error value otherwise.

Remarks

An element can have additional sibling elements that do not match the current view condition and thus are not returned when navigating the element tree.

The structure of the Microsoft UI Automation tree changes as the visible UI elements on the desktop change. It is not guaranteed that an element returned as the previous sibling element will be returned as the previous sibling on subsequent passes.

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