The MCI_VD_ESCAPE_PARMS structure contains parameters for the MCI_ESCAPE message for videodisc devices. 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;
LPCSTR lpstrCommand;
} MCI_VD_ESCAPE_PARMS;
The MCI_VD_ESCAPE_PARMS structure has the following fields:
dwCallback
The low-order word specifies a window handle used for the MCI_NOTIFY flag.
lpstrCommand
Specifies a far pointer to a null-terminated buffer containing the command to send to the device.