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lineAgentSpecific
The lineAgentSpecific function allows the application to access proprietary handler-specific
functions of the agent handler associated with the address. The meaning of the
extensions are specific to the agent handler. Each set of agent-related extensions is
identified by a universally unique 128-bit extension ID which must be
obtained, along with the specification for the extension, from the promulgator of that
extension (usually the author of the agent handler software on the telephony
server). The list of extensions supported by the agent handler is obtained from
the LINEAGENTCAPS structure returned by lineGetAgentCaps.
LONG lineAgentSpecific(
HLINE hLine,
|
| DWORD dwAddressID,
|
| DWORD dwAgentExtensionIDIndex,
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| LPVOID lpParams,
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| DWORD dwSize
|
| );
|
|
Parameters
hLine
A handle to the open line device.
dwAddressID
An address on the open line device.
dwAgentExtensionIDIndex
The position in the ExtensionIDList structure in LINEAGENTCAPS of the agent handler extension being invoked.
lpParams
A pointer to a memory area used to hold a parameter block. The format of this
parameter block is device specific and its contents are passed by TAPI to and
from the agent handler application on the telephony server. This parameter block
must specify the function to be invoked and include sufficient room for any
data to be returned.
dwSize
The size in bytes of the parameter block area.
Return Values
Returns a positive request identifier if the asynchronous operation starts;
otherwise, one of these negative error values:
LINEERR_INVALADDRESSID, LINEERR_INVALAGENTID, LINEERR_INVALLINEHANDLE,
LINEERR_INVALPARAM, LINEERR_INVALPOINTER, LINEERR_NOMEM, LINEERR_OPERATIONFAILED,
LINEERR_OPERATIONUNAVAIL, LINEERR_RESOURCEUNAVAIL, LINEERR_STRUCTURETOOSMALL,
LINEERR_UNINITIALIZED.
Additional return values are specific to the agent handler.
Remarks
This operation is part of the Extended Telephony services. It provides access
to an agent handler-specific feature without defining its meaning.
This function provides a generic parameter profile. The interpretation of the
parameter structure is handler specific. Indications and replies sent back to
the application that are handler specific should use the LINE_AGENTSPECIFIC
message.
An agent handler can provide access to handler-specific functions by defining
parameters for use with this function. Applications that want to make use of
these extensions should consult the vendor-specific documentation that describes
what extensions are defined. An application that relies on these extensions
will typically not be able to work with other agent handler environments.
See Also
LINEAGENTCAPS, lineGetAgentCaps
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