4 <STRONG>newwin</STRONG>, <STRONG>delwin</STRONG>, <STRONG>mvwin</STRONG>, <STRONG>subwin</STRONG>, <STRONG>derwin</STRONG>, <STRONG>mvderwin</STRONG>, <STRONG>dupwin</STRONG>,
5 <STRONG>wsyncup</STRONG>, <STRONG>syncok</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>wsyncdown</STRONG> - create <STRONG>curses</STRONG>
10 <H2>SYNOPSIS</H2><PRE>
11 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
13 <STRONG>WINDOW</STRONG> <STRONG>*newwin(int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG> <STRONG>int</STRONG> <STRONG>begin_y,</STRONG>
14 <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
15 <STRONG>int</STRONG> <STRONG>delwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
16 <STRONG>int</STRONG> <STRONG>mvwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG>
17 <STRONG>WINDOW</STRONG> <STRONG>*subwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG>
18 <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
19 <STRONG>WINDOW</STRONG> <STRONG>*derwin(WINDOW</STRONG> <STRONG>*orig,</STRONG> <STRONG>int</STRONG> <STRONG>nlines,</STRONG> <STRONG>int</STRONG> <STRONG>ncols,</STRONG>
20 <STRONG>int</STRONG> <STRONG>begin_y,</STRONG> <STRONG>int</STRONG> <STRONG>begin_x);</STRONG>
21 <STRONG>int</STRONG> <STRONG>mvderwin(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>par_y,</STRONG> <STRONG>int</STRONG> <STRONG>par_x);</STRONG>
22 <STRONG>WINDOW</STRONG> <STRONG>*dupwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
23 <STRONG>void</STRONG> <STRONG>wsyncup(WINDOW</STRONG> <STRONG>*win);</STRONG>
24 <STRONG>int</STRONG> <STRONG>syncok(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>bool</STRONG> <STRONG>bf);</STRONG>
25 <STRONG>void</STRONG> <STRONG>wcursyncup(WINDOW</STRONG> <STRONG>*win);</STRONG>
26 <STRONG>void</STRONG> <STRONG>wsyncdown(WINDOW</STRONG> <STRONG>*win);</STRONG>
30 <H2>DESCRIPTION</H2><PRE>
31 Calling <STRONG>newwin</STRONG> creates and returns a pointer to a new win-
32 dow with the given number of lines and columns. The upper
33 left-hand corner of the window is at line <EM>begin</EM>_<EM>y</EM>, column
34 <EM>begin</EM>_<EM>x</EM>. If either <EM>nlines</EM> or <EM>ncols</EM> is zero, they default
35 to <STRONG>LINES</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>y</EM> and <STRONG>COLS</STRONG> <STRONG>-</STRONG> <EM>begin</EM>_<EM>x</EM>. A new full-screen
36 window is created by calling <STRONG>newwin(0,0,0,0)</STRONG>.
38 Calling <STRONG>delwin</STRONG> deletes the named window, freeing all mem-
39 ory associated with it (it does not actually erase the
40 window's screen image). Subwindows must be deleted before
41 the main window can be deleted.
43 Calling <STRONG>mvwin</STRONG> moves the window so that the upper left-hand
44 corner is at position (<EM>x</EM>, <EM>y</EM>). If the move would cause the
45 window to be off the screen, it is an error and the window
46 is not moved. Moving subwindows is allowed, but should be
49 Calling <STRONG>subwin</STRONG> creates and returns a pointer to a new win-
50 dow with the given number of lines, <EM>nlines</EM>, and columns,
51 <EM>ncols</EM>. The window is at position (<EM>begin</EM>_<EM>y</EM>, <EM>begin</EM>_<EM>x</EM>) on
52 the screen. (This position is relative to the screen, and
53 not to the window <EM>orig</EM>.) The window is made in the middle
54 of the window <EM>orig</EM>, so that changes made to one window
55 will affect both windows. The subwindow shares memory
56 with the window <EM>orig</EM>. When using this routine, it is nec-
57 essary to call <STRONG>touchwin</STRONG> or <STRONG>touchline</STRONG> on <EM>orig</EM> before call-
58 ing <STRONG>wrefresh</STRONG> on the subwindow.
60 dow <EM>orig</EM> rather than the screen. There is no difference
61 between the subwindows and the derived windows.
63 Calling <STRONG>mvderwin</STRONG> moves a derived window (or subwindow)
64 inside its parent window. The screen-relative parameters
65 of the window are not changed. This routine is used to
66 display different parts of the parent window at the same
67 physical position on the screen.
69 Calling <STRONG>dupwin</STRONG> creates an exact duplicate of the window
72 Calling <STRONG>wsyncup</STRONG> touches all locations in ancestors of <EM>win</EM>
73 that are changed in <EM>win</EM>. If <STRONG>syncok</STRONG> is called with second
74 argument <STRONG>TRUE</STRONG> then <STRONG>wsyncup</STRONG> is called automatically when-
75 ever there is a change in the window.
77 The <STRONG>wsyncdown</STRONG> routine touches each location in <EM>win</EM> that
78 has been touched in any of its ancestor windows. This
79 routine is called by <STRONG>wrefresh</STRONG>, so it should almost never
80 be necessary to call it manually.
82 The routine <STRONG>wcursyncup</STRONG> updates the current cursor position
83 of all the ancestors of the window to reflect the current
84 cursor position of the window.
88 <H2>RETURN VALUE</H2><PRE>
89 Routines that return an integer return the integer <STRONG>ERR</STRONG>
90 upon failure and <STRONG>OK</STRONG> (SVr4 only specifies "an integer value
91 other than <STRONG>ERR</STRONG>") upon successful completion.
93 <STRONG>delwin</STRONG> returns the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon
94 successful completion.
96 Routines that return pointers return <STRONG>NULL</STRONG> on error.
101 If many small changes are made to the window, the <STRONG>wsyncup</STRONG>
102 option could degrade performance.
104 Note that <STRONG>syncok</STRONG> may be a macro.
109 The subwindow functions (<EM>subwin</EM>, <EM>derwin</EM>, <EM>mvderwin</EM>, <STRONG>wsyn-</STRONG>
110 <STRONG>cup</STRONG>, <STRONG>wsyncdown</STRONG>, <STRONG>wcursyncup</STRONG>, <STRONG>syncok</STRONG>) are flaky, incom-
111 pletely implemented, and not well tested.
113 The System V curses documentation is very unclear about
114 what <STRONG>wsyncup</STRONG> and <STRONG>wsyncdown</STRONG> actually do. It seems to imply
115 that they are only supposed to touch exactly those lines
116 that are affected by ancestor changes. The language here,
117 and the behavior of the <STRONG>curses</STRONG> implementation, is pat-
121 <H2>PORTABILITY</H2><PRE>
122 The XSI Curses standard, Issue 4 describes these func-
127 <H2>SEE ALSO</H2><PRE>
128 <STRONG><A HREF="ncurses.3x.html">curses(3X)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3X)</A></STRONG>, <STRONG><A HREF="curs_touch.3x.html">curs_touch(3X)</A></STRONG>