lineGetCallStatus

The lineGetCallStatus function returns the current status of the specified call.

LONG WINAPI lineGetCallStatus(
  HCALL hCall,                   
  LPLINECALLSTATUS lpCallStatus  
);

Parameters

hCall

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

lpCallStatus

A pointer to a variably sized data structure of type LINECALLSTATUS. Upon successful completion of the request, this structure is filled with call status information. Prior to calling lineGetCallStatus, 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

The lineGetCallStatus function returns the dynamic status of a call, whereas lineGetCallInfo returns primarily static information about a call. Call status information includes the current call state, detailed mode information related to the call while in this state (if any), as well as a list of the available API functions the application can invoke on the call while the call is in this state. An application would typically be interested in requesting this information when it receives notification about a call state change by the LINE_CALLSTATE message.

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.

See Also

TAPI 2.2 Reference Overview, Basic Telephony Services Reference, LINE_CALLSTATE, LINECALLSTATUS, lineGetCallInfo