typedef OSErr(* DragTrackingHandlerProcPtr) (
    DragTrackingMessage message, 
    WindowRef theWindow, 
    void *handlerRefCon, 
    DragRef theDrag
);

You would declare your function like this if you were to name it MyDragTrackingHandlerCallback:

OSErr MyDragTrackingHandlerCallback (
    DragTrackingMessage message, 
    WindowRef theWindow, 
    void *handlerRefCon, 
    DragRef theDrag
);

message

theWindow

handlerRefCon

theDrag

function result

A result code.

AVAILABILITY

Supported in Carbon.

© 2000 Apple Computer, Inc. — (Last Updated 5/4/2000)