lineSetLineDevStatus

The lineSetLineDevStatus function sets the line device status. Except for basic parameter validation, it is a straight pass-through to the service provider. The service provider will send a LINE_LINEDEVSTATUS message to inform applications of the new state, when set; TAPI does not synthesize these messages.

LONG WINAPI lineSetLineDevStatus(

DWORD hLine,
DWORD dwStatusToChange,
DWORD fStatus
);

Parameters

hLine

Handle to the line device.

dwStatusToChange

One or more of the LINEDEVSTATUSFLAGS_ values.

fStatus

TRUE (1) to turn on the indicated status bit(s), FALSE (0) to turn off.

Return Values

Returns a positive request identifier if the asynchronous operation starts; otherwise, one of these negative error values:

LINEERR_INVALLINEHANDLE, LINEERR_INVALLINESTATE, LINEERR_INVALPARAM, LINEERR_NOMEM, LINEERR_OPERATIONUNAVAIL, LINEERR_OPERATIONFAILED, LINEERR_RESOURCEUNAVAIL, LINEERR_UNINITIALIZED.

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