The MCI_WAVE_DELETE_PARMS structure contains position information for the MCI_DELETE command for waveform-audio devices.
typedef struct {
    DWORD dwCallback; 
    DWORD dwFrom; 
    DWORD dwTo; 
} MCI_WAVE_DELETE_PARMS;
 When assigning data to the members of this structure, set the corresponding flags in the fdwCommand parameter of the mciSendCommand function to validate the members.
  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mmsystem.h.
MCI Overview, MCI Structures, MCI_DELETE, mciSendCommand