See also MCI_SAVE
typedef struct { DWORD dwCallback; DWORD lpfilename; RECT rc; } MCI_OVLY_SAVE_PARMS;
The MCI_OVLY_SAVE_PARMS structure contains parameters for the MCI_SAVE message for video overlay 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.
dwCallback
The low-order word specifies a window handle used for the MCI_NOTIFY flag.
lpfilename
Specifies a far pointer to the buffer containing a null-terminated string.
rc
Specifies a rectangle.