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lineGetCallInfo (Compact 2013)

  • [アーティクル]

3/26/2014

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

Syntax

LONG WINAPI lineGetCallInfo(
  HCALL hCall,
  LPLINECALLINFO lpCallInfo 
);

Parameters

  • hCall
    Handle to the call to be queried. The call state of hCall can be any state.
  • lpCallInfo
    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 Value

Returns zero if the request succeeds or a negative error number if an error occurs. The following table shows the return values for this function.

Value

Description

LINEERR_INVALCALLHANDLE

The handle to the call is invalid.

LINEERR_RESOURCEUNAVAIL

The resources are unavailable.

LINEERR_INVALPOINTER

The pointer is invalid.

LINEERR_STRUCTURETOOSMALL

The structure is too small.

LINEERR_NOMEM

Not enough memory is available.

LINEERR_UNINITIALIZED

A parameter is uninitialized.

LINEERR_OPERATIONFAILED

The operation failed.

LINEERR_OPERATIONUNAVAIL

The operation is unavailable.

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

Header

tapi.h

Library

TAPI32.dll

See Also

Reference

TAPI Line Device Functions
LINE_CALLINFO (TAPI)
LINE_CALLSTATE (TAPI)
LINECALLINFO