QuickTime 4 Reference

Tween Record

QuickTime maintains a tween record structure that is provided to your tween component's TweenDoTween method. The TweenRecord structure is defined as follows.



 
typedef struct TweenRecord TweenRecord;



 
struct TweenRecord {

    long                    version;

    QTAtomContainer         container;

    QTAtom                  tweenAtom;

    QTAtom                  dataAtom;

    Fixed                   percent;

    TweenerDataUPP          dataProc;

    void *                  private1;

    void *                  private2;

};

Field descriptions

version: The version number of this structure. This field is initialized to 0.
container: The atom container that contains the tween data.
tweenAtom: The atom for this tween entry's data in the container.
percent: The percentage by which to change the data.
dataProc: The procedure the tween component calls to send the tweened value to the receiving track.
private1: Reserved.
private2: Reserved.