Platform SDK: TAPI

PHONE_DEVSPECIFIC

TAPI 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.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tapi.h.