lineGetCallInfo

The lineGetCallInfo function enables an application to obtain fixed information about the specified call.

LONG WINAPI lineGetCallInfo(
  HCALL hCall,               
  LPLINECALLINFO lpCallInfo  
);

Parameters

hCall

A handle to the call to be queried. The call state of hCall can be any state.

lpCallInfo

A pointer to a variably sized data structure of type LINECALLINFO. Upon successful completion of the request, this structure is filled with call-related information. Prior to calling lineGetCallInfo, 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_INVALCALLHANDLE, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALPOINTER, LINEERR_STRUCTURETOOSMALL, LINEERR_NOMEM, LINEERR_UNINITIALIZED, LINEERR_OPERATIONFAILED, LINEERR_OPERATIONUNAVAIL.

Remarks

A separate LINECALLINFO structure exists for every incoming or outgoing call. The structure contains primarily fixed information about the call. An application would typically be interested in checking this information when it receives its handle for a call by the LINE_CALLSTATE message, or each time it receives notification by a LINE_CALLINFO message that parts of the call information structure have changed. These messages supply the handle for the call as a parameter.

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, LINE_CALLINFO, LINE_CALLSTATE, LINECALLINFO