This structure contains fields for the MCI_PLAY message for digital video devices.
typedef struct _MCI_DGV_PLAY_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulFrom; /* Starting play position. */ ULONG ulTo; /* Ending play position. */ ULONG ulSpeed; /* Frames per second play speed. */ } MCI_DGV_PLAY_PARMS; typedef MCI _ DGV _ PLAY _ PARMS * PMCI _ DGV _ PLAY _ PARMS ;