◄Summary► ◄Example► ◄Up► ◄Contents► ◄Index► ◄Back► ─────Run-Time Library─────────────────────────────────────────────────────── The _dos_setblock routine uses system call 0x4A to change the size of <seg>, previously allocated by _dos_allocmem, to <size> paragraphs. If the request cannot be satisfied, the maximum possible segment size is copied to the buffer pointed to by <maxsize>. Return Value The function returns 0 if successful. If the call fails, it returns the DOS error code and sets errno to ENOMEM, indicating that a bad segment value was passed (one that does not correspond to a segment returned from a previous _dos_allocmem call) or one that contains invalid arena headers. -♦-