The MCI_PLAY_PARMS structure contains parameters for the MCI_PLAY message. When assigning data to the fields in this data structure, set the corresponding MCI flags in the lParam1 parameter of mciSendCommand to validate the fields.
typedef struct {
DWORD dwCallback;
DWORD dwFrom;
DWORD dwTo;
} MCI_PLAY_PARMS;
The MCI_PLAY_PARMS structure has the following fields:
dwCallback
The low-order word specifies a window handle used for the MCI_NOTIFY flag.
dwFrom
Specifies the position to play from.
dwTo
Specifies the position to play to.