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(
  long *plCallbackInstance
);

Parameters

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
S_OK
Method succeeded.
E_POINTER
The plCallbackInstance parameter is not a valid pointer.
8
LegacyMediaControl2 Enums

Requirements

   
Target Platform Windows
Header tapi3if.h
Library Uuid.lib
DLL Tapi3.dll

See also

ITTAPI::RegisterCallNotifications

ITToneDetectionEvent