File attachment structure.
typedef struct {
char *description;
char *filename;
char *mediatype;
void *data;
DWORD length;
} TAG_WEBM_ATTACHMENT;
| description | A description of the attached file. |
| filename | The filename of the file. |
| mediatype | The MIME type of the file. |
| data | The file data. |
| length | The size of data in bytes. |