DrtStartSearch function (drt.h)

The DrtStartSearch function searches the DRT for a key using criteria specified in the DRT_SEARCH_INFO structure.

Syntax

HRESULT DrtStartSearch(
  [in]           HDRT                  hDrt,
  [in]           DRT_DATA              *pKey,
  [in, optional] const DRT_SEARCH_INFO *pInfo,
                 ULONG                 timeout,
  [in]           HANDLE                hEvent,
  [in, optional] const PVOID           pvContext,
  [out]          HDRT_SEARCH_CONTEXT   *hSearchContext
);

Parameters

[in] hDrt

The DRT handle returned by the DrtOpen function.

[in] pKey

Pointer to the DRT_DATA structure containing the key.

[in, optional] pInfo

Pointer to the DRT_SEARCH_INFO structure that specifies the properties of the search.

timeout

Specifies the milliseconds until the search is stopped.

[in] hEvent

Handle to the event that is signaled when the DrtStartSearch API finishes or an intermediate node is found.

[in, optional] pvContext

Pointer to the context data passed to the application through the event.

[out] hSearchContext

Handle used in the call to DrtEndSearch.

Return value

This function returns S_OK on success. Other possible values include:

Return code	Description
E_HANDLE	hDrt is an invalid handle or phKeyRegistration is an invalid handle
E_INVALIDARG	hSearchContext is NULL. pKey is NULL The pb member of the DRT_DATA structure of pKey is NULL. pInfo was passed in, the minimum key is set inside pInfo for range search, but the maximum key is NULL. pInfo was passed in, the maximum key is set inside pInfo for range search, but the minimum key is NULL.
DRT_E_INVALID_KEY_SIZE	The cb member of the DRT_DATA structure of pKey is not equal to 256 bits. pInfo was passed in, but the key size of the minimum key set inside pInfo is not equal to 256 bits. pInfo was passed in, but the key size of the maximum key set inside pInfo is not equal to 256 bits.
DRT_E_INVALID_SEARCH_INFO	pInfo was passed in but the dwSize of pInfo is not equal to size of the DRT_SEARCH_INFO structure.
DRT_E_INVALID_MAX_ENDPOINTS	pInfo was passed in but max endpoints (cMaxEndpoints) is set to 0 inside pInfo or pInfo was passed in but cMaxEndpoints is greater than 1 with fAnyMatchInRange set to TRUE
DRT_E_INVALID_SEARCH_RANGE	Min and max key values are equal, but target is different.
DRT_E_FAULTED	The DRT cloud is in the faulted state.
E_OUTOFMEMORY	The system is out of memory.
E_UNEXPECTED	The DRT is shutting down.
E_FAIL	An unexpected fatal error has occurred.

Requirements

Requirement	Value
Minimum supported client	Windows 7 Professional [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Target Platform	Windows
Header	drt.h
Library	Drt.lib
DLL	Drt.dll

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Last updated on 2021-10-13