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curs_initscr(3CURSES)	   Curses Library Functions	 curs_initscr(3CURSES)

NAME
       curs_initscr, initscr, newterm, endwin, isendwin, set_term, delscreen -
       curses screen initialization and manipulation routines

SYNOPSIS
       cc [ flag ... ] file ... -lcurses [ library ... ]
       #include <curses.h>

       WINDOW *initscr(void);

       int endwin(void);

       int isendwin(void);

       SCREEN *newterm(char *type, FILE *outfd, FILE *infd);

       SCREEN *set_term(SCREEN *new);

       void delscreen(SCREEN * sp);

DESCRIPTION
       initscr() is almost always the first routine that should be called (the
       exceptions  are	slk_init(), filter(), ripoffline(), use_env() and, for
       multiple-terminal applications, newterm().) This determines the	termi‐
       nal  type  and  initializes  all curses data structures. initscr() also
       causes the first call to refresh()  to  clear  the  screen.  If	errors
       occur,  initscr() writes an appropriate error message to standard error
       and exits; otherwise, a pointer is returned to stdscr(). If the program
       needs  an  indication  of  error	 conditions,  newterm() should be used
       instead of  initscr(); initscr() should only be called once per	appli‐
       cation.

       A  program  that	 outputs  to  more  than  one  terminal should use the
       newterm() routine for each terminal instead  of	initscr().  A  program
       that needs an indication of error conditions, so it can continue to run
       in a line-oriented mode if the terminal cannot  support	a  screen-ori‐
       ented  program,	would  also  use  this routine. The routine  newterm()
       should be called once for each terminal. It returns a variable of  type
       SCREEN  *  which	 should	 be saved as a reference to that terminal. The
       arguments are the type of the terminal to be used in place of $TERM,  a
       file  pointer  for output to the terminal, and another file pointer for
       input from the terminal (if type is NULL, $TERM	will  be  used).   The
       program	must  also  call  endwin() for each terminal being used before
       exiting from curses. If newterm() is called more than once for the same
       terminal, the first terminal referred to must be the last one for which
       endwin() is called.

       A program should always call endwin() before exiting or	escaping  from
       curses  mode  temporarily.  This	 routine restores tty modes, moves the
       cursor to the lower left-hand corner of the screen and resets the  ter‐
       minal  into the proper non-visual mode. Calling refresh() or doupdate()
       after a temporary escape causes the program to resume visual mode.

       The isendwin() routine returns TRUE if endwin() has been called without
       any subsequent calls to wrefresh(), and FALSE otherwise.

       The  set_term()	routine is used to switch between different terminals.
       The screen reference new becomes the new current terminal. The previous
       terminal	 is  returned  by  the routine. This is the only routine which
       manipulates SCREEN pointers; all other routines affect only the current
       terminal.

       The  delscreen()	 routine frees storage associated with the SCREEN data
       structure.  The endwin() routine	 does  not  do	this,  so  delscreen()
       should  be  called  after  endwin() if a particular SCREEN is no longer
       needed.

RETURN VALUES
       endwin() returns the integer ERR upon failure and  OK  upon  successful
       completion.

       Routines that return pointers always return NULL on error.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │Unsafe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       curs_kernel(3CURSES),	 curs_refresh(3CURSES),	    curs_slk(3CURSES),
       curs_util(3CURSES), curses(3CURSES), attributes(5)

NOTES
       The header <curses.h> automatically includes the headers	 <stdio.h> and
       <unctrl.h>.

       Note that initscr() and newterm() may be macros.

SunOS 5.11			  31 Dec 1996		 curs_initscr(3CURSES)
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