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- /*
- TrackThumb must be called as follows:
- partCode = TrackThumb(whichControl, localPoint, actionProc);
-
- It works exactly as the MacOS _TrackControl
-
- actionProc must be declared as follows:
- void actionProc(ControlHandle control, short value);
- */
-
- #pragma internal on
- short TrackThumb(ControlHandle control, Point start, void (*action)(ControlHandle, short));
- #pragma internal reset
-