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42 <H1 class="no-header">curs_scr_dump 3x</H1>
43 <PRE>
44 <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>                                            <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>
45
46
47
48
49 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
50        <STRONG>scr_dump</STRONG>, <STRONG>scr_restore</STRONG>, <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG> - read (write) a <STRONG>curses</STRONG> screen
51        from (to) a file
52
53
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
56
57        <STRONG>int</STRONG> <STRONG>scr_dump(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
58        <STRONG>int</STRONG> <STRONG>scr_restore(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
59        <STRONG>int</STRONG> <STRONG>scr_init(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
60        <STRONG>int</STRONG> <STRONG>scr_set(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
61
62
63 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
64
65 </PRE><H3><a name="h3-scr_dump">scr_dump</a></H3><PRE>
66        The <STRONG>scr_dump</STRONG> routine dumps the current contents of the  <EM>virtual</EM>  <EM>screen</EM>
67        to the file <EM>filename</EM>.
68
69
70 </PRE><H3><a name="h3-scr_restore">scr_restore</a></H3><PRE>
71        The  <STRONG>scr_restore</STRONG>  routine  sets  the  <EM>virtual</EM> <EM>screen</EM> to the contents of
72        <EM>filename</EM>, which must have been written using <STRONG>scr_dump</STRONG>.  The  next  call
73        to  <STRONG>doupdate</STRONG>  restores  the <EM>physical</EM> <EM>screen</EM> to the way it looked in the
74        dump file.
75
76
77 </PRE><H3><a name="h3-scr_init">scr_init</a></H3><PRE>
78        The <STRONG>scr_init</STRONG> routine reads in the contents of <EM>filename</EM> and uses them to
79        initialize the <STRONG>curses</STRONG> data structures about what the terminal currently
80        has on its screen.  If the data is determined to be valid, <STRONG>curses</STRONG> bases
81        its  next update of the screen on this information rather than clearing
82        the  screen  and  starting  from  scratch.   <STRONG>scr_init</STRONG>  is  used   after
83        <STRONG><A HREF="curs_initscr.3x.html">initscr(3x)</A></STRONG>  or  a  <STRONG>system(3)</STRONG>  call  to  share  the screen with another
84        process which has done a <STRONG>scr_dump</STRONG> after its <STRONG><A HREF="curs_initscr.3x.html">endwin(3x)</A></STRONG> call.  The  data
85        is declared invalid
86
87        <STRONG>o</STRONG>   if the terminfo capabilities <STRONG>rmcup</STRONG> and <STRONG>nrrmc</STRONG> exist, also
88
89        <STRONG>o</STRONG>   if  the  terminal  has been written to since the preceding <STRONG>scr_dump</STRONG>
90            call.
91
92
93 </PRE><H3><a name="h3-scr_set">scr_set</a></H3><PRE>
94        The <STRONG>scr_set</STRONG> routine is a combination of <STRONG>scr_restore</STRONG> and  <STRONG>scr_init</STRONG>.   It
95        tells the program that the information in <EM>filename</EM> is what is currently
96        on the screen, and also what the program wants on the screen.  This can
97        be thought of as a screen inheritance function.
98
99        To  read  (write)  a window from (to) a file, use the <STRONG>getwin</STRONG> and <STRONG>putwin</STRONG>
100        routines [see <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>].
101
102
103 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
104        All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon success.
105
106        X/Open defines no error conditions.  In this implementation, each  will
107        return an error if the file cannot be opened.
108
109
110 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
111        Note that <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG>, and <STRONG>scr_restore</STRONG> may be macros.
112
113
114 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
115        The XSI Curses standard, Issue 4, describes these functions (adding the
116        const qualifiers).
117
118        The SVr4 docs merely say under <STRONG>scr_init</STRONG> that the dump data is also con-
119        sidered invalid "if the time-stamp of the tty is old" but do not define
120        "old".
121
122
123 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
124        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,    <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,    <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,    <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>,
125        <STRONG><A HREF="scr_dump.5.html">scr_dump(5)</A></STRONG>, <STRONG>system(3)</STRONG>
126
127
128
129                                                              <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>
130 </PRE>
131 <div class="nav">
132 <ul>
133 <li><a href="#h2-NAME">NAME</a></li>
134 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
135 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
136 <ul>
137 <li><a href="#h3-scr_dump">scr_dump</a></li>
138 <li><a href="#h3-scr_restore">scr_restore</a></li>
139 <li><a href="#h3-scr_init">scr_init</a></li>
140 <li><a href="#h3-scr_set">scr_set</a></li>
141 </ul>
142 </li>
143 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
144 <li><a href="#h2-NOTES">NOTES</a></li>
145 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
146 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
147 </ul>
148 </div>
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