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curs_util(3)							  curs_util(3)

NAME
       curs_util,  delay_output,  filter, flushinp, getwin, key_name, keyname,
       putwin, unctrl, use_env, wunctrl - Miscellaneous utility	 routines  for
       Curses

SYNOPSIS
       #include <curses.h>

       int delay_output(
	       int ms ); void filter(
	       void ); int flushinp(
	       void ); WINDOW *getwin(
	       FILE *filep ); char *key_name(
	       wchar_t c ); char *keyname(
	       int c ); int putwin(
	       WINDOW *win,
	       FILE *filep ); void use_env(
	       char bool ); wchar_t *wunctrl(
	       cchar_t *wc ); include <unctrl.h>

       char *unctrl(
	       chtype c );

LIBRARY
       Curses Library (libcurses)

STANDARDS
       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       delay_output, filter, flushinp, getwin, key_name, keyname, putwin, unc‐
       trl, use_env, wunctrl:  XCURSES4.2

       Refer  to  the  standards(5)  reference page for more information about
       industry standards and associated tags.

DESCRIPTION
       The unctrl macro generates a character string that is a printable  rep‐
       resentation  of	the  character c.  Control characters are displayed in
       the ^X notation. Printing characters are displayed as is.

       The wunctrl function generates a wide-character string that is a print‐
       able  representation of the wide character wc.  This function also per‐
       forms the following processing on the input argument: Converts  control
       characters to the ^X notation Removes any rendition information

       The  keyname  and  key_name  routines generate a character string whose
       value describes the key c.  The c argument of keyname can be  an	 8-bit
       character  or  a	 key  code.  The c argument of key_name must be a wide
       character. The generated string has a format  according	to  the	 first
       applicable input item in the following list: The same character ^X M-X

	      Applies to keyname only.	KEY_keyname

	      Applies to keyname only.	UNKNOWN KEY

       The  meta-character  notation  shown in this list is used only if meta-
       characters are enabled.

       If applications use the filter routine, they  call  it  before  calling
       initscr	or  newterm.   The filter routine tells Curses that there is a
       one-line screen. In this case, Curses does not use any  terminal	 capa‐
       bilities	 that  assume knowledge of the screen line on which the cursor
       is positioned.

       If applications use the use_env routine, they call  it  before  calling
       initscr or newterm.  When called with FALSE as an argument, the routine
       tells Curses to use the values of lines and columns as specified in the
       terminfo	 database,  even when: The LINES and COLUMNS environment vari‐
       ables are set

	      If these variables are set, the default Curses  behavior	is  to
	      use them.	 Curses is running in a window

	      In  this	case,  if  LINES  and COLUMNS are not set, the default
	      Curses behavior is to use the window size.

       The putwin routine writes all data associated with window win into  the
       file  to	 which	filep  points. The application can later retrieve this
       data by using the getwin function.

       The getwin routine reads window-related data  stored  in	 the  file  by
       putwin  and  then creates and initializes a new window using that data.
       The getwin routine returns a pointer to the new window.

       On terminals that support  pad  characters,  the	 delay_output  routine
       pauses  the  output  for	 at least ms millisecond pause. Otherwise, the
       length of the delay is unspecified. This routine	 should	 not  be  used
       extensively  because  padding  characters  are  used  rather than a CPU
       pause.

       The flushinp routine throws away any typeahead input that has  not  yet
       been read by the program.

NOTES
       The  return  value  of  keyname and key_name may point to a static area
       that is overwritten by a subsequent call to either of these functions.

       Applications normally process meta-characters without storing them in a
       window.	If an application stores meta-characters in a window and tries
       to retrieve them as wide characters, keyname() cannot detect meta-char‐
       acters, since wide characters do not support meta-characters.

       The  header  file  <curses.h>  automatically  includes  the header file
       <stdio.h>.

       Note that unctrl may be a macro.

RETURN VALUES
       The delay_output and putwin routines return ERR	upon  failure  and  OK
       upon successful completion.

       The flushinp routine always returns OK.

       Routines that return pointers return NULL on error.

       The filter routine does not return a value.

SEE ALSO
       Functions: curses(3), curs_initscr(3), curs_scr_dump(3)

       Others: standards(5)

								  curs_util(3)
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