PHONE_DEVSPECIFIC

The implementation sends the PHONE_DEVSPECIFIC message to an application to notify the application about device-specific events occurring at the phone. The meaning of the message and the interpretation of the parameters is implementation-defined.

PHONE_DEVSPECIFIC
hPhone = (HPHONE) hPhoneDevice;
dwCallbackInstance = (DWORD) hCallback;
dwParam1 = (DWORD) DeviceSpecific1;
dwParam2 = (DWORD) DeviceSpecific2;
dwParam3 = (DWORD) DeviceSpecific3;
 

Parameters

hPhone

A handle to the phone device.

dwCallbackInstance

The application's callback instance provided when opening the phone device.

dwParam1

Device specific.

dwParam2

Device specific.

dwParam3

Device specific.

Return Values

No return value.

QuickInfo

  Version: Use TAPI version 1.4 and later.
  Header: Declared in tapi.h.