curs_window(3CURSES)					     Curses Library Functions					      curs_window(3CURSES)

NAME

       curs_window, newwin, delwin, mvwin, subwin, derwin, mvderwin, dupwin, wsyncup, syncok, wcursyncup, wsyncdown - create curses windows

SYNOPSIS

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

       WINDOW *newwin(int nlines, int ncols, int begin_y, int begin_x);

       int delwin(WINDOW *win);

       int mvwin(WINDOW *win, int y, int x);

       WINDOW *subwin(WINDOW *orig, int nlines, int ncols,
	    int begin_y, int begin_x);

       WINDOW *derwin(WINDOW *orig, int nlines, int ncols,
	    int begin_y, int begin_x);

       int mvderwin(WINDOW *win, int par_y, int par_x);

       WINDOW *dupwin(WINDOW *win);

       void wsyncup(WINDOW *win);

       int syncok(WINDOW *win, bool bf);

       void wcursyncup(WINDOW *win);

       void wsyncdown(WINDOW *win);

DESCRIPTION

       The  newwin()  routine  creates and returns a pointer to a new window with the given number of lines, nlines, and columns, ncols. The upper
       left-hand corner of the window is at line begin_y, column begin_x. If either nlines or ncols is zero, they default to LINES -- begin_y  and
       COLS -- begin_x. A new full-screen window is created by calling newwin(0,0,0,0).

       The delwin() routine deletes the named window, freeing all memory associated with it. Subwindows must be deleted before the main window can
       be deleted.

       The mvwin() routine moves the window so that the upper left-hand corner is at position (x, y). If the move would cause the window to be off
       the screen, it is an error and the window is not moved. Moving subwindows is allowed, but should be avoided.

       The  subwin()  routine creates and returns a pointer to a new window with the given number of lines, nlines, and columns, ncols. The window
       is at position (begin_y, begin_x) on the screen. (This position is relative to the screen, and not to the window orig.) The window is  made
       in  the middle of the window orig, so that changes made to one window will affect both windows. The subwindow shares memory with the window
       orig. When using this routine, it is necessary to call touchwin() or touchline() on orig before calling wrefresh() on the subwindow.

       The derwin() routine is the same as subwin(), except that begin_y and begin_x are relative to the origin of the window orig rather than the
       screen. There is no difference between the subwindows and the derived windows.

       The mvderwin() routine moves a derived window (or subwindow) inside its parent window. The screen-relative parameters of the window are not
       changed. This routine is used to display different parts of the parent window at the same physical position on the screen.

       The dupwin() routine creates an exact duplicate of the window win.

       Each curses window maintains two data structures: the character image structure and the status structure. The character image structure	is
       shared  among  all windows in the window hierarchy (that is, the window with all subwindows). The status structure, which contains informa-
       tion about individual line changes in the window, is private to each window. The routine wrefresh() uses the  status  data  structure  when
       performing  screen  updating.  Since  status  structures  are  not  shared, changes made to one window in the hierarchy may not be properly
       reflected on the screen.

       The routine wsyncup() causes the changes in the status structure of a window to be reflected in the status structures of its ancestors.	If
       syncok() is called with second argument TRUE then wsyncup() is called automatically whenever there is a change in the window.

       The  routine  wcursyncup() updates the current cursor position of all the ancestors of the window to reflect the current cursor position of
       the window.

       The routine wsyncdown() updates the status structure of the window to reflect the changes in the status structures of its ancestors. Appli-
       cations seldom call this routine because it is called automatically by wrefresh().

RETURN VALUES

       Routines that return an integer return the integer ERR upon failure and an integer value other than ERR upon successful completion.

       delwin() returns the integer ERR upon failure and OK upon successful completion.

       Routines that return pointers return NULL on error.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       curs_refresh(3CURSES), curs_touch(3CURSES), curses(3CURSES), attributes(5)

NOTES

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

       If many small changes are made to the window, the wsyncup() option could degrade performance.

       Note that syncok() may be a macro.

SunOS 5.11							    31 Dec 1996 					      curs_window(3CURSES)