This property holds a DWORD value which is set during opening the device. This value is also passed to TAPI as a unique identifier and is passed back by TAPI when a message for the device is sent to the application.

Prior versions than 2.0.4 have used the memory address (self) of the component as the CallbackInstance.

Availability

Design-Time: None / Run-Time: Read

Declaration

property CallbackInstance: DWORD;

See Also

ThbTapiPhone.OnTapiMessage