LINE_DEVSPECIFICEX

The TSPI LINE_DEVSPECIFICEX message is sent to the LINEEVENT callback function to notify TAPI about extended device-specific events occurring on a line or address. The meaning of the message and the interpretation of the dwParam1, dwParam2, and dwParam3 parameters is device specific.

LINE_DEVSPECIFICEX
htLine = (HTAPILINE) hLineDevice;
htCall = (HTAPICALL) 0;
dwMsg = (DWORD) LINE_DEVSPECIFICEX;
dwParam1 = (DWORD) DeviceData1;
dwParam2 = (DWORD) DeviceData2;
dwParam3 = (DWORD) DeviceData3;

Parameters

htLine

The TAPI opaque object handle to the line device.

htCall

Unused.

dwMsg

The value LINE_DEVSPECIFICEX.

dwParam1

Device specific.

dwParam2

Device specific.

dwParam3

Device specific.

Remarks

This message is used by a service provider in conjunction with the TSPI_lineDevSpecific function. Its meaning is device specific.

TAPI sends the LINE_DEVSPECIFICEX message to applications in response to receiving this message from a service provider. The htLine parameter is translated to the appropriate hLine as the hDevice parameter at the TAPI level. The dwParam1, dwParam2, and dwParam3 parameters are passed through unmodified.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Unsupported.
  Version: Requires TAPI 3.0 or later.
  Header: Declared in Tapi.h.

See Also

LINE_CALLDEVSPECIFIC, LINEEVENT, TSPI_lineDevSpecific