lineGetLineDevStatus

The lineGetLineDevStatus function enables an application to query the specified open line device for its current status.

LONG WINAPI lineGetLineDevStatus(
  HLINE hLine,                     
  LPLINEDEVSTATUS lpLineDevStatus  
);

Parameters

hLine

A handle to the open line device to be queried.

lpLineDevStatus

A pointer to a variably sized data structure of type LINEDEVSTATUS. Upon successful completion of the request, this structure is filled with the line's device status. Prior to calling lineGetLineDevStatus, the application should set the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.

Return Values

Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are:

LINEERR_INVALLINEHANDLE, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALPOINTER, LINEERR_STRUCTURETOOSMALL, LINEERR_NOMEM, LINEERR_UNINITIALIZED, LINEERR_OPERATIONFAILED, LINEERR_OPERATIONUNAVAIL.

Remarks

An application uses lineGetLineDevStatus to query the line device for its current line status. This status information applies globally to all addresses on the line device. Use lineGetAddressStatus to determine status information about a specific address on a line.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 1.3 or later.
  Header: Declared in Tapi.h.
  Library: Use Tapi32.lib.
  Unicode: Implemented as Unicode and ANSI versions on all platforms.

See Also

TAPI 2.2 Reference Overview, Basic Telephony Services Reference, LINEDEVSTATUS, lineGetAddressStatus