C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
_setmode
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <fcntl.h>, <io.h>, <errno.h>
 
  Syntax:    int setmode( int handle, int mode );
             mode: _O_TEXT, _O_BINARY
 
  Returns:   the previous translation mode if successful, or -1 if not.
             errno: EBADF, EINVAL
 
  See also:  _creat, _open
             BINMODE.OBJ
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