typedef struct {
DWORD dwCallback;
DWORD dwTimeFormat;
DWORD dwAudio;
DWORD dwTempo;
DWORD dwPort;
DWORD dwSlave;
DWORD dwMaster;
DWORD dwOffset;
} MCI_SEQ_SET_PARMS;
The MCI_SEQ_SET_PARMS structure contains parameters for the MCI_SET message for MIDI sequencer 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_SET