Translation mode constants
Syntax
#include <fcntl.h>
Remarks
The _O_BINARY
, _O_TEXT
, _O_WTEXT
, _O_U16TEXT
, and _O_U8TEXT
manifest constants determine the translation mode for files (_open
and _sopen
) or the translation mode for streams (_setmode
).
The allowed values are:
Value | Description |
---|---|
_O_TEXT |
Opens file in ANSI text (translated) mode. Carriage return-line feed (CR-LF) combinations are translated into a single line feed (LF) on input. Line feed characters are translated into CR-LF combinations on output. Also, CTRL+Z is interpreted as an end-of-file character on input. In files opened for reading, and for reading and writing, fopen checks for CTRL+Z at the end of the file and removes it, if possible. It's removed because using the fseek and ftell functions to move within a file ending with CTRL+Z may cause fseek to behave improperly near the end of the file. |
_O_WTEXT |
Opens file in UTF-16 text (translated) mode. The wide-character versions of the text translations of _O_TEXT are supported. |
_O_U16TEXT |
Opens file in UTF-16 no BOM text (translated) mode. The wide-character versions of the text translations of _O_TEXT are supported. |
_O_U8TEXT |
Opens file in UTF-8 no BOM text (translated) mode. The text translations of _O_TEXT are supported. |
_O_BINARY |
Opens file in binary (untranslated) mode. The above translations are suppressed. |
_O_RAW |
Same as _O_BINARY . Supported for C 2.0 compatibility. |
For more information, see Text and binary mode file I/O and File translation constants.
See also
_open
, _wopen
_pipe
_sopen
, _wsopen
_setmode
Global constants
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