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- <STRONG>touchwin</STRONG>, <STRONG>touchline</STRONG>, <STRONG>untouchwin</STRONG>, <STRONG>wtouchln</STRONG>, <STRONG>is_linetouched</STRONG>,
- <STRONG>is_wintouched</STRONG> - <STRONG>curses</STRONG> refresh control routines
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
- <STRONG>int</STRONG> <STRONG>touchwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>touchline(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>start,</STRONG> <STRONG>int</STRONG> <STRONG>count);</STRONG>
- <STRONG>int</STRONG> <STRONG>untouchwin(WINDOW</STRONG> <STRONG>*win);</STRONG>
- <STRONG>int</STRONG> <STRONG>wtouchln(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG> <STRONG>int</STRONG> <STRONG>changed);</STRONG>
- <STRONG>int</STRONG> <STRONG>is_linetouched(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>line);</STRONG>
- <STRONG>int</STRONG> <STRONG>is_wintouched(WINDOW</STRONG> <STRONG>*win);</STRONG>
-
-
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The <STRONG>touchwin</STRONG> and <STRONG>touchline</STRONG> routines throw away all opti-
- mization information about which parts of the window have
- been touched, by pretending that the entire window has
- been drawn on. This is sometimes necessary when using
- overlapping windows, since a change to one window affects
- the other window, but the records of which lines have been
- changed in the other window do not reflect the change.
- The routine <STRONG>touchline</STRONG> only pretends that <EM>count</EM> lines have
- been changed, beginning with line <EM>start</EM>.
-
- The <STRONG>untouchwin</STRONG> routine marks all lines in the window as
- unchanged since the last call to <STRONG>wrefresh</STRONG>.
-
- The <STRONG>wtouchln</STRONG> routine makes <EM>n</EM> lines in the window, starting
- at line <EM>y</EM>, look as if they have (<EM>changed</EM><STRONG>=1</STRONG>) or have not
- (<EM>changed</EM><STRONG>=0</STRONG>) been changed since the last call to <STRONG>wrefresh</STRONG>.
-
- The <STRONG>is_linetouched</STRONG> and <STRONG>is_wintouched</STRONG> routines return <STRONG>TRUE</STRONG>
- if the specified line/window was modified since the last
- call to <STRONG>wrefresh</STRONG>; otherwise they return <STRONG>FALSE</STRONG>. In addi-
- tion, <STRONG>is_linetouched</STRONG> returns <STRONG>ERR</STRONG> if <EM>line</EM> is not valid for
- the given window.
-
-
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- All routines return the integer <STRONG>ERR</STRONG> upon failure and an
- integer value other than <STRONG>ERR</STRONG> upon successful completion,
- unless otherwise noted in the preceding routine descrip-
- tions.
-
-
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4 describes these func-
- tions.
-
- Some historic curses implementations had, as an undocu-
- mented feature, the ability to do the equivalent of
- <STRONG>clearok(...,</STRONG> <STRONG>1)</STRONG> by saying <STRONG>touchwin(stdscr)</STRONG> or <STRONG>clear(std-</STRONG>
- <STRONG>scr)</STRONG>. This will not work under ncurses.
-
-
-</PRE>
-<H2>NOTES</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3X)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3X)</A></STRONG>.
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projects / ncurses.git / blobdiff