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The EVT_ACX_JACK_RETRIEVE_PRESENCE_STATE callback function is implemented by the driver and is called when the state is requested for the specified jack.
Syntax
EVT_ACX_JACK_RETRIEVE_PRESENCE_STATE EvtAcxJackRetrievePresenceState;
NTSTATUS EvtAcxJackRetrievePresenceState(
ACXJACK Jack,
PBOOLEAN IsConnected
)
{...}
Parameters
Jack
The physical terminal for which the presence state has been requested.
IsConnected
A Boolean value indicating if the terminal specified by the Jack parameter is present and connected.
Return value
EVT_ACX_JACK_RETRIEVE_PRESENCE_STATE returns STATUS_SUCCESS if the call was successful. Otherwise, it returns an NTSTATUS error code.
Remarks
ACX requirements
Minimum ACX version: 1.0
For more information about ACX versions, see ACX version overview.
Requirements
| Requirement | Value |
|---|---|
| Header | acxpin.h |
| IRQL | PASSIVE_LEVEL |