ITToneDetectionEvent::get_CallbackInstance method (tapi3if.h)
The get_CallbackInstance method gets a pointer to the application's callback function that will process the event.
Syntax
HRESULT get_CallbackInstance(
[out] long *plCallbackInstance
);
Parameters
[out] plCallbackInstance
Pointer to the callback instance returned by the ITTAPI::RegisterCallNotifications method.
Return value
This method can return one of these values.
| Return code/value | Description |
|---|---|
|
Method succeeded. |
|
The plCallbackInstance parameter is not a valid pointer. |
|
LegacyMediaControl2 Enums |
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | tapi3if.h |
| Library | Uuid.lib |
| DLL | Tapi3.dll |