QuickTime 4 Reference

AddSequenceTweenAtom

Listing 3 shows AddSequenceTweenAtom , a routine that adds a kTweenEntry atom for a sequenced tween. The newSequenceAtom returned may be passed into the AddTweenAtom and AddSequenceElement routines as their sequenceAtom parameter.

To create a nonsequenced tween, use AddTweenAtom instead.

Listing 3 Utility routine AddSequenceTweenAtom



 
OSErr AddSequenceTweenAtom( QTAtomContainer container, QTAtom parentAtom,

                    QTAtomID sequenceAtomID, QTAtom *newSequenceAtom )

{

    if ( (! container) || (sequenceAtomID == 0) )  { return paramErr; }



    return QTInsertChild( container, parentAtom, kTweenEntry,

                        sequenceAtomID, 0, 0, nil, newSequenceAtom );

}