typedef struct tagMCI_ANIM_RECT_PARMS {
    DWORD_PTR   dwCallback;
#ifdef MCI_USE_OFFEXT
    POINT   ptOffset;
    POINT   ptExtent;
#else   
    RECT    rc;
#endif  
} MCI_ANIM_RECT_PARMS;

typedef MCI_ANIM_RECT_PARMS * PMCI_ANIM_RECT_PARMS;

typedef MCI_ANIM_RECT_PARMS FAR * LPMCI_ANIM_RECT_PARMS;