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 <H1 class="no-header">curs_scr_dump 3x</H1>
 <PRE>
 <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>


 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
        <STRONG>scr_dump</STRONG>, <STRONG>scr_restore</STRONG>, <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG> - read (write) a <STRONG>curses</STRONG> screen
        from (to) a file


 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

        <STRONG>int</STRONG> <STRONG>scr_dump(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
        <STRONG>int</STRONG> <STRONG>scr_restore(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
        <STRONG>int</STRONG> <STRONG>scr_init(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
        <STRONG>int</STRONG> <STRONG>scr_set(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>


 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>

 </PRE><H3><a name="h3-scr_dump">scr_dump</a></H3><PRE>
        The <STRONG>scr_dump</STRONG> routine dumps the current contents of the  <EM>virtual</EM>  <EM>screen</EM>
        to the file <EM>filename</EM>.


 </PRE><H3><a name="h3-scr_restore">scr_restore</a></H3><PRE>
        The  <STRONG>scr_restore</STRONG>  routine  sets  the  <EM>virtual</EM> <EM>screen</EM> to the contents of
        <EM>filename</EM>, which must have been written using <STRONG>scr_dump</STRONG>.  The  next  call
        to  <STRONG>doupdate</STRONG>  restores  the <EM>physical</EM> <EM>screen</EM> to the way it looked in the
        dump file.


 </PRE><H3><a name="h3-scr_init">scr_init</a></H3><PRE>
        The <STRONG>scr_init</STRONG> routine reads in the contents of <EM>filename</EM> and uses them to
        initialize the <STRONG>curses</STRONG> data structures about what the terminal currently
        has on its screen.  If the data is determined to be valid, <STRONG>curses</STRONG> bases
        its  next update of the screen on this information rather than clearing
        the  screen  and  starting  from  scratch.   <STRONG>scr_init</STRONG>  is  used   after
        <STRONG><A HREF="curs_initscr.3x.html">initscr(3x)</A></STRONG>  or  a  <STRONG>system(3)</STRONG>  call  to  share  the screen with another
        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
        is declared invalid

        <STRONG>o</STRONG>   if the terminfo capabilities <STRONG>rmcup</STRONG> and <STRONG>nrrmc</STRONG> exist, also

        <STRONG>o</STRONG>   if  the  terminal  has been written to since the preceding <STRONG>scr_dump</STRONG>
            call.


 </PRE><H3><a name="h3-scr_set">scr_set</a></H3><PRE>
        The <STRONG>scr_set</STRONG> routine is a combination of <STRONG>scr_restore</STRONG> and  <STRONG>scr_init</STRONG>.   It
        tells the program that the information in <EM>filename</EM> is what is currently
        on the screen, and also what the program wants on the screen.  This can
        be thought of as a screen inheritance function.

        To  read  (write)  a window from (to) a file, use the <STRONG>getwin</STRONG> and <STRONG>putwin</STRONG>
        routines [see <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>].


 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
        All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon success.

        X/Open defines no error conditions.  In this implementation, each  will
        return an error if the file cannot be opened.


 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
        Note that <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG>, and <STRONG>scr_restore</STRONG> may be macros.


 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
        The XSI Curses standard, Issue 4, describes these functions (adding the
        const qualifiers).

        The SVr4 docs merely say under <STRONG>scr_init</STRONG> that the dump data is also con-
        sidered invalid "if the time-stamp of the tty is old" but do not define
        "old".


 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
        <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>,
        <STRONG><A HREF="scr_dump.5.html">scr_dump(5)</A></STRONG>, <STRONG>system(3)</STRONG>


                                                              <STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>
 </PRE>
 <div class="nav">
 <ul>
 <li><a href="#h2-NAME">NAME</a></li>
 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
 <ul>
 <li><a href="#h3-scr_dump">scr_dump</a></li>
 <li><a href="#h3-scr_restore">scr_restore</a></li>
 <li><a href="#h3-scr_init">scr_init</a></li>
 <li><a href="#h3-scr_set">scr_set</a></li>
 </ul>
 </li>
 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
 <li><a href="#h2-NOTES">NOTES</a></li>
 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
 </ul>
 </div>
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	* sale, use or other dealings in this Software without prior written *
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	<H1 class="no-header">curs_scr_dump 3x</H1>
	<PRE>
	<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>




	</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
	<STRONG>scr_dump</STRONG>, <STRONG>scr_restore</STRONG>, <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG> - read (write) a <STRONG>curses</STRONG> screen
	from (to) a file


	</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
	<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>

	<STRONG>int</STRONG> <STRONG>scr_dump(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
	<STRONG>int</STRONG> <STRONG>scr_restore(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
	<STRONG>int</STRONG> <STRONG>scr_init(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>
	<STRONG>int</STRONG> <STRONG>scr_set(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>filename</EM><STRONG>);</STRONG>


	</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>

	</PRE><H3><a name="h3-scr_dump">scr_dump</a></H3><PRE>
	The <STRONG>scr_dump</STRONG> routine dumps the current contents of the <EM>virtual</EM> <EM>screen</EM>
	to the file <EM>filename</EM>.


	</PRE><H3><a name="h3-scr_restore">scr_restore</a></H3><PRE>
	The <STRONG>scr_restore</STRONG> routine sets the <EM>virtual</EM> <EM>screen</EM> to the contents of
	<EM>filename</EM>, which must have been written using <STRONG>scr_dump</STRONG>. The next call
	to <STRONG>doupdate</STRONG> restores the <EM>physical</EM> <EM>screen</EM> to the way it looked in the
	dump file.


	</PRE><H3><a name="h3-scr_init">scr_init</a></H3><PRE>
	The <STRONG>scr_init</STRONG> routine reads in the contents of <EM>filename</EM> and uses them to
	initialize the <STRONG>curses</STRONG> data structures about what the terminal currently
	has on its screen. If the data is determined to be valid, <STRONG>curses</STRONG> bases
	its next update of the screen on this information rather than clearing
	the screen and starting from scratch. <STRONG>scr_init</STRONG> is used after
	<STRONG><A HREF="curs_initscr.3x.html">initscr(3x)</A></STRONG> or a <STRONG>system(3)</STRONG> call to share the screen with another
	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
	is declared invalid

	<STRONG>o</STRONG> if the terminfo capabilities <STRONG>rmcup</STRONG> and <STRONG>nrrmc</STRONG> exist, also

	<STRONG>o</STRONG> if the terminal has been written to since the preceding <STRONG>scr_dump</STRONG>
	call.


	</PRE><H3><a name="h3-scr_set">scr_set</a></H3><PRE>
	The <STRONG>scr_set</STRONG> routine is a combination of <STRONG>scr_restore</STRONG> and <STRONG>scr_init</STRONG>. It
	tells the program that the information in <EM>filename</EM> is what is currently
	on the screen, and also what the program wants on the screen. This can
	be thought of as a screen inheritance function.

	To read (write) a window from (to) a file, use the <STRONG>getwin</STRONG> and <STRONG>putwin</STRONG>
	routines [see <STRONG><A HREF="curs_util.3x.html">curs_util(3x)</A></STRONG>].


	</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
	All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> upon success.

	X/Open defines no error conditions. In this implementation, each will
	return an error if the file cannot be opened.


	</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
	Note that <STRONG>scr_init</STRONG>, <STRONG>scr_set</STRONG>, and <STRONG>scr_restore</STRONG> may be macros.


	</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
	The XSI Curses standard, Issue 4, describes these functions (adding the
	const qualifiers).

	The SVr4 docs merely say under <STRONG>scr_init</STRONG> that the dump data is also con-
	sidered invalid "if the time-stamp of the tty is old" but do not define
	"old".


	</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
	<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>,
	<STRONG><A HREF="scr_dump.5.html">scr_dump(5)</A></STRONG>, <STRONG>system(3)</STRONG>



	<STRONG><A HREF="curs_scr_dump.3x.html">curs_scr_dump(3x)</A></STRONG>
	</PRE>
	<div class="nav">
	<ul>
	<li><a href="#h2-NAME">NAME</a></li>
	<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
	<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
	<ul>
	<li><a href="#h3-scr_dump">scr_dump</a></li>
	<li><a href="#h3-scr_restore">scr_restore</a></li>
	<li><a href="#h3-scr_init">scr_init</a></li>
	<li><a href="#h3-scr_set">scr_set</a></li>
	</ul>
	</li>
	<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
	<li><a href="#h2-NOTES">NOTES</a></li>
	<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
	<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
	</ul>
	</div>
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