Programming with QuickTime VR

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QTVRMouseEnter

You can use the QTVRMouseEnter function to handle the user's moving the cursor into a QuickTime VR movie for which mouse-over tracking is disabled.

OSErr QTVRMouseEnter (
                     QTVRInstance qtvr,
                     Pointpt,
                     UInt32*hotSpotID,
                     WindowPtr w);
qtvr
An instance of a QuickTime VR movie.
pt
The current location of the cursor, in the local coordinates of the graphics world specified by the w parameter.
hotSpotID
On entry, a pointer to a long integer. On exit, that long integer contains the ID of the hot spot that lies beneath the specified point, or the value 0 if no hot spot lies beneath that point.
w
A pointer to a graphics world.
function result
A result code.

DESCRIPTION

The QTVRMouseEnter function returns, in the long integer pointed to by the hotSpotID parameter, the ID of the hot spot in the QuickTime VR movie specified by the qtvr parameter that lies directly under the point specified by the pt parameter. If no hot spot lies under that point, the long integer is set to 0. QTVRMouseEnter also performs any other tasks that are typically performed when the user first moves the cursor into a QuickTime VR movie.

SPECIAL CONSIDERATIONS

You need to call QTVRMouseEnter only if you have disabled mouse-over tracking for the specified QuickTime VR movie.

SEE ALSO

Use QTVRSetMouseOverTracking (link) to change the mouse-over tracking state of a QuickTime VR movie. Use QTVRMouseWithin (next) and QTVRMouseLeave (link) to handle the cursor's remaining in and leaving a QuickTime VR movie.

© 1997 Apple Computer, Inc.

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