LINEAGENTCAPS - Telephony API Programmer's Reference

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LINEAGENTCAPS

typedef struct lineagentcaps_tag {

DWORD dwTotalSize;

DWORD dwNeededSize;

DWORD dwUsedSize;

DWORD dwAgentHandlerInfoSize;

DWORD dwAgentHandlerInfoOffset;

DWORD dwCapsVersion;

DWORD dwFeatures;

DWORD dwStates;

DWORD dwNextStates;

DWORD dwMaxNumGroupEntries;

DWORD dwAgentStatusMessages;

DWORD dwNumAgentExtensionIDs;

DWORD dwAgentExtensionIDListSize;

DWORD dwAgentExtensionIDListOffset;

} LINEAGENTCAPS, FAR *LPLINEAGENTCAPS;

Members
dwAgentHandlerInfoSize

dwAgentHandlerInfoOffset

The size in bytes and offset from the beginning of LINEAGENTCAPS of a null-terminated string specifying the name, version, or other identifying information of the server application that is handling agent requests.

dwCapsVersion

The TAPI version that the agent handler application used in preparing the contents of this structure. This will be no greater than the API version that the calling application passed in to lineGetAgentCaps.

dwFeatures

The agent-related features available for this line using the LINEAGENTFEATURE_ constants. Invoking a supported feature requires the line and address to be in the proper state. A zero in a bit position indicates that the corresponding feature is never available. A one indicates that the corresponding feature may be available if the line is in the appropriate state for the operation to be meaningful. This field allows an application to discover which agent features can be (and which can never be) supported by the device.

dwStates

The LINEAGENTSTATE_ values which may be used in the dwAgentState parameter of lineSetAgentState. Setting a supported state requires the line and address to be in the proper state. A zero in a bit position indicates that the corresponding state is never available. A one indicates that the corresponding state may be available if the line is in the appropriate state for the state to be meaningful. This field allows an application to discover which agent states can be (and which can never be) supported on the device.

dwNextStates

The LINEAGENTSTATE_ values which may be used in the dwNextAgentState parameter of lineSetAgentState. Setting a supported state requires the line and address to be in the proper state. A zero in a bit position indicates that the corresponding state is never available. A one indicates that the corresponding state may be available if the line is in the appropriate state for the state to be meaningful. This field allows an application to discover which agent states can be (and which can never be) supported on the device.

dwMaxNumGroupEntries

The maximum number of agent IDs that can be logged in on the address simultaneously. Determines the highest value that can be passed in as the dwNumEntries field in the LINEAGENTGROUPLIST structure to lineSetAgentGroup.

dwAgentStatusMessages

Indicates the LINEAGENTSTATUS_ constants that can be received by the application in dwParam2 of a LINE_AGENTSTATUS message.

dwNumExtensionIDs

The number of LINEEXTENSIONID structures that appear in the ExtensionIDList array. The value is 0 if agent-handler-specific extensions are supported on the address.

dwExtensionIDListSize

dwExtensionIDListOffset

Total size in bytes and offset from the beginning of LINEAGENTCAPS of an array of LINEEXTENSIONID elements. The size will be dwNumExtensionIDs times SIZEOF (LINEEXTENSIONID). The array lists the 128-bit universally unique identifiers for all agent-handler-specific extensions supported by the agent handle for the address. The extension being used is referenced in the lineAgentSpecific function and LINE_AGENTSPECIFIC message by its position in this table, the first entry being entry 0, so it is important that the agent handler always present extension IDs in this array in the same order.

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