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IMDSPEnumDevice::Skip

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The Skip method skips over the next specified number of media device interface(s) in the enumeration sequence. This method must be implemented. It must not return WMDM_E_NOTSUPPORTED or E_NOTIMPL. For more information, see the second table under Implementing Service Providers.

Syntax

HRESULT Skip(
  ULONG  celt,
  ULONG*  pceltFetched
);

Parameters

celt

[in]  Number of elements to skip.

pceltFetched

[out]  Pointer to the number of elements that actually were skipped.

Return Values

The method returns an HRESULT. All the interface methods in Windows Media Device Manager and service provider can return any of the following classes of error codes:

  • Standard COM error codes
  • Windows error codes converted to HRESULT values
  • Windows Media Device Manager error codes

For a complete list of possible error codes, see Error Codes.

Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK The method succeeded.
S_FALSE The number of elements skipped is less than celt.
E_FAIL An unspecified error occurred.

Remarks

If the number specified in the celt parameter is greater than the actual number of interfaces remaining in the enumeration sequence, then the return value from Skip is S_FALSE. When this happens, the pceltFetched parameter must be queried to determine how many interfaces were skipped. If you skip to the end of the array of enumerated media device interfaces, a subsequent call to Next returns S_FALSE.

Requirements

Header: Defined in wmsp.idl.

Library: mssachlp.lib

See Also