typedef struct {
DWORD dwCallback;
LPCSTR lpstrCommand;
} MCI_VD_ESCAPE_PARMS;
The MCI_VD_ESCAPE_PARMS structure contains parameters for the MCI_ESCAPE message for videodisc 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_ESCAPE