LINE_DEVSPECIFICEX message
The TAPI LINE_DEVSPECIFICEX message is sent to notify the application about device-specific events occurring on a line, address, or call. The meaning of the message and the interpretation of the parameters are device specific.
Parameters
-
hDevice
-
A handle to either a line device or call. This parameter is device specific.
-
dwCallbackInstance
-
The callback instance supplied when opening the line.
-
dwParam1
-
Device specific.
-
dwParam2
-
Device specific.
-
dwParam3
-
Device specific.
Return value
No return value.
Remarks
The LINE_DEVSPECIFICEX message is used by a service provider in conjunction with the lineDevSpecific function. Its meaning is device specific.
Requirements
| Requirement | Value |
|---|---|
| TAPI version |
Requires TAPI 2.2 |
| Header |
|