phoneCallbackFunc

The phoneCallbackFunc function is a placeholder for the application-supplied function name.

VOID FAR PASCAL phoneCallbackFunc(

HANDLE hDevice,
DWORD dwMsg,
DWORD dwCallbackInstance,
DWORD dwParam1,
DWORD dwParam2,
DWORD dwParam3
);

Parameters

hDevice

A handle to a phone device associated with the callback.

dwMsg

A line or call device message.

dwCallbackInstance

Callback instance data passed back to the application in the callback. This DWORD is not interpreted by TAPI.

dwParam1

A parameter for the message.

dwParam2

A parameter for the message.

dwParam3

A parameter for the message.

Remarks

For more information about the parameters passed to this callback function, see Messages later in this section.

All callbacks occur in the application's context. The callback function must reside in a dynamic-link library (DLL) or application module and be exported in the module-definition file.

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