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lineSetCallPrivilege function (tapi.h)

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The lineSetCallPrivilege function sets the application's privilege to the specified privilege.

Syntax

LONG lineSetCallPrivilege(
  HCALL hCall,
  DWORD dwCallPrivilege
);

Parameters

hCall

Handle to the call whose privilege is to be set. The call state of hCall can be any state.

dwCallPrivilege

Required privilege for the specified call. This parameter uses one and only one of the LINECALLPRIVILEGE_ Constants.

Return value

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

LINEERR_INVALCALLHANDLE, LINEERR_OPERATIONFAILED, LINEERR_INVALCALLSTATE, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALCALLPRIVILEGE, LINEERR_UNINITIALIZED, LINEERR_NOMEM.

Remarks

If the application is the sole owner of a non-idle call and can change its privilege to monitor, a LINEERR_INVALCALLSTATE error is returned. The application can also first drop the call using lineDrop to make the call transition to the idle state and then change its privilege.

Requirements

Requirement Value
Target Platform Windows
Header tapi.h
Library Tapi32.lib
DLL Tapi32.dll

See also

Basic Telephony Services Reference

TAPI 2.2 Reference Overview

lineDrop