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- * @Id: curs_outopts.3x,v 1.20 2005/05/15 16:18:32 tom Exp @
+ * @Id: curs_outopts.3x,v 1.25 2010/12/04 18:38:55 tom Exp @
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needs insert/delete line, for example, for a screen edi-
tor. It is disabled by default because insert/delete line
tends to be visually annoying when used in applications
- where it isn't really needed. If insert/delete line can-
+ where it is not really needed. If insert/delete line can-
not be used, <STRONG>curses</STRONG> redraws the changed portions of all
lines.
leave it. It is useful for applications where the cursor
is not used, since it reduces the need for cursor motions.
- The <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> routines allow the applica-
- tion programmer to set a software scrolling region in a
- window. <EM>top</EM> and <EM>bot</EM> are the line numbers of the top and
- bottom margin of the scrolling region. (Line 0 is the top
- line of the window.) If this option and <STRONG>scrollok</STRONG> are en-
- abled, an attempt to move off the bottom margin line caus-
- es all lines in the scrolling region to scroll one line in
- the direction of the first line. Only the text of the
- window is scrolled. (Note that this has nothing to do
- with the use of a physical scrolling region capability in
- the terminal, like that in the VT100. If <STRONG>idlok</STRONG> is enabled
- and the terminal has either a scrolling region or in-
- sert/delete line capability, they will probably be used by
- the output routines.)
-
- The <STRONG>scrollok</STRONG> option controls what happens when the cursor
- of a window is moved off the edge of the window or
- scrolling region, either as a result of a newline action
- on the bottom line, or typing the last character of the
+ The <STRONG>setscrreg</STRONG> and <STRONG>wsetscrreg</STRONG> routines allow the applica-
+ tion programmer to set a software scrolling region in a
+ window. The <EM>top</EM> and <EM>bot</EM> parameters are the line numbers
+ of the top and bottom margin of the scrolling region.
+ (Line 0 is the top line of the window.) If this option
+ and <STRONG>scrollok</STRONG> are enabled, an attempt to move off the bot-
+ tom margin line causes all lines in the scrolling region
+ to scroll one line in the direction of the first line.
+ Only the text of the window is scrolled. (Note that this
+ has nothing to do with the use of a physical scrolling re-
+ gion capability in the terminal, like that in the VT100.
+ If <STRONG>idlok</STRONG> is enabled and the terminal has either a
+ scrolling region or insert/delete line capability, they
+ will probably be used by the output routines.)
+
+ The <STRONG>scrollok</STRONG> option controls what happens when the cursor
+ of a window is moved off the edge of the window or
+ scrolling region, either as a result of a newline action
+ on the bottom line, or typing the last character of the
last line. If disabled, (<EM>bf</EM> is <STRONG>FALSE</STRONG>), the cursor is left
- on the bottom line. If enabled, (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the window
- is scrolled up one line (Note that to get the physical
- scrolling effect on the terminal, it is also necessary to
+ on the bottom line. If enabled, (<EM>bf</EM> is <STRONG>TRUE</STRONG>), the window
+ is scrolled up one line (Note that to get the physical
+ scrolling effect on the terminal, it is also necessary to
call <STRONG>idlok</STRONG>).
- The <STRONG>nl</STRONG> and <STRONG>nonl</STRONG> routines control whether the underlying
- display device translates the return key into newline on
- input, and whether it translates newline into return and
- line-feed on output (in either case, the call <STRONG>addch('\n')</STRONG>
+ The <STRONG>nl</STRONG> and <STRONG>nonl</STRONG> routines control whether the underlying
+ display device translates the return key into newline on
+ input, and whether it translates newline into return and
+ line-feed on output (in either case, the call <STRONG>addch('\n')</STRONG>
does the equivalent of return and line feed on the virtual
- screen). Initially, these translations do occur. If you
- disable them using <STRONG>nonl</STRONG>, <STRONG>curses</STRONG> will be able to make bet-
- ter use of the line-feed capability, resulting in faster
- cursor motion. Also, <STRONG>curses</STRONG> will then be able to detect
+ screen). Initially, these translations do occur. If you
+ disable them using <STRONG>nonl</STRONG>, <STRONG>curses</STRONG> will be able to make bet-
+ ter use of the line-feed capability, resulting in faster
+ cursor motion. Also, <STRONG>curses</STRONG> will then be able to detect
the return key.
X/Open does not define any error conditions.
In this implementation, those functions that have a window
- pointer will return an error if the window pointer is
+ pointer will return an error if the window pointer is
null.
<STRONG>wclrtoeol</STRONG>
- returns an error if the cursor position is
+ returns an error if the cursor position is
about to wrap.
<STRONG>wsetscrreg</STRONG>
- returns an error if the scrolling region lim-
+ returns an error if the scrolling region lim-
its extend outside the window.
- X/Open does not define any error conditions. This imple-
- mentation returns an error if the window pointer is null.
+ X/Open does not define any error conditions. This imple-
+ mentation returns an error if the window pointer is null.
</PRE>
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>,
- <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_scroll.3x.html">curs_scroll(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
+ <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_scroll.3x.html">curs_scroll(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.