Inside Macintosh: QuickTime Components
enum {
pnotComponentWantsEvents = 1, /* component requires events */
pnotComponentNeedsNoCache = 2 /* component does not require cache */
};
enum {
kPreviewShowDataSelector = 1, /* PreviewShowData */
kPreviewMakePreviewSelector = 2, /* PreviewMakePreview */
kPreviewMakePreviewReferenceSelector= 3,
/* PreviewMakePreviewReference */
kPreviewEventSelector = 4 /* PreviewEvent */
};
#define ShowFilePreviewComponentType 'pnot' /* creates previews */
#define CreateFilePreviewComponentType 'pmak' /* displays previews */