typedef struct {
DWORD dwCallback;
DWORD dwFrom;
DWORD dwTo;
} MCI_WAVE_DELETE_PARMS;
The MCI_WAVE_DELETE_PARMS structure contains parameters for the MCI_DELETE message for waveform audio devices. When assigning data to the members in this structure, set the corresponding MCI flags in the lParam1 parameter of mciSendCommand to validate the members.
MCI_DELETE