_ClipToPicture
void _ClipToPicture(BPicture* picture, BPoint where,
_ClipToPicture(picture, where, false, sync);
_ClipToPicture(picture, where, true, sync);
(void *)_ClipToPicture, // 21 ClipToPicture(void *user, BPicture *picture, BPoint pt, bool clip_to_inverse_picture)