IKsJackDescription2::GetJackDescription2 method (devicetopology.h)

The GetJackDescription2 method gets the description of a specified audio jack.


HRESULT GetJackDescription2(
  [in]  UINT                nJack,
  [out] KSJACK_DESCRIPTION2 *pDescription2


[in] nJack

The index of the jack to get a description for. If the connection consists of n jacks, the jacks are numbered from 0 to n– 1. To get the number of jacks, call the IKsJackDescription::GetJackCount method.

[out] pDescription2

Pointer to a caller-allocated buffer into which the method writes a structure of type KSJACK_DESCRIPTION2 that contains information about the jack. The buffer size must be at least sizeof(KSJACK_DESCRIPTION2).

Return value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
Parameter nJack is not a valid jack index.
Pointer pDescription is NULL.


Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Target Platform Windows
Header devicetopology.h

See also