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- * @Id: curs_opaque.3x,v 1.15 2020/10/24 09:41:22 tom Exp @
+ * @Id: curs_opaque.3x,v 1.43 2024/03/16 15:35:01 tom Exp @
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-<H1 class="no-header">curs_opaque 3X</H1>
+<H1 class="no-header">curs_opaque 3x 2024-03-16 ncurses 6.4 Library calls</H1>
<PRE>
-<B><A HREF="curs_opaque.3X.html">curs_opaque(3X)</A></B> <B><A HREF="curs_opaque.3X.html">curs_opaque(3X)</A></B>
+<STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
- <B>is_cleared</B>, <B>is_idlok</B>, <B>is_idcok</B>, <B>is_immedok</B>, <B>is_keypad</B>, <B>is_leaveok</B>,
- <B>is_nodelay</B>, <B>is_notimeout</B>, <B>is_pad</B>, <B>is_scrollok</B>, <B>is_subwin</B>, <B>is_syncok</B>,
- <B>wgetdelay</B>, <B>wgetparent</B>, <B>wgetscrreg</B> - <B>curses</B> window properties
+ <STRONG>is_cleared</STRONG>, <STRONG>is_idlok</STRONG>, <STRONG>is_idcok</STRONG>, <STRONG>is_immedok</STRONG>, <STRONG>is_keypad</STRONG>, <STRONG>is_leaveok</STRONG>,
+ <STRONG>is_nodelay</STRONG>, <STRONG>is_notimeout</STRONG>, <STRONG>is_pad</STRONG>, <STRONG>is_scrollok</STRONG>, <STRONG>is_subwin</STRONG>, <STRONG>is_syncok</STRONG>,
+ <STRONG>wgetdelay</STRONG>, <STRONG>wgetparent</STRONG>, <STRONG>wgetscrreg</STRONG> - obtain <EM>curses</EM> window properties
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
- <B>#include</B> <B><curses.h></B>
-
- <B>bool</B> <B>is_cleared(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_idcok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_idlok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_immedok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_keypad(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_leaveok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_nodelay(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_notimeout(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_pad(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_scrollok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_subwin(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>bool</B> <B>is_syncok(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>WINDOW</B> <B>*</B> <B>wgetparent(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>int</B> <B>wgetdelay(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>);</B>
- <B>int</B> <B>wgetscrreg(const</B> <B>WINDOW</B> <B>*</B><I>win</I><B>,</B> <B>int</B> <B>*</B><I>top</I><B>,</B> <B>int</B> <B>*</B><I>bottom</I><B>);</B>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+
+ <STRONG>bool</STRONG> <STRONG>is_cleared(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_idcok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_idlok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_immedok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_keypad(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_leaveok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_nodelay(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_notimeout(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_pad(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_scrollok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_subwin(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>bool</STRONG> <STRONG>is_syncok(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+
+ <STRONG>WINDOW</STRONG> <STRONG>*</STRONG> <STRONG>wgetparent(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>wgetdelay(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>wgetscrreg(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <STRONG>*</STRONG><EM>top</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <STRONG>*</STRONG><EM>bottom</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
- This implementation provides functions which return properties set in
- the WINDOW structure, allowing it to be "opaque" if the symbol <B>NCURS-</B>
- <B>ES_OPAQUE</B> is defined:
+ <EM>ncurses</EM> provides functions returning properties of a <EM>WINDOW</EM> structure,
+ allowing it to be "opaque" if the application defines the
+ <STRONG>NCURSES_OPAQUE</STRONG> preprocessor symbol. <EM>Opacity</EM> in this sense means that
+ the members of <EM>struct</EM> data types are not directly accessible (for
+ instance, through "." or "->" operators), but instead must be queried
+ and/or set via library functions. Advantages of opacity include
+ greater abstraction and improved management of concurrent accesses to
+ data structures, keeping object states coherent.
- <B>is_cleared</B>
- returns the value set in <B>clearok</B>
+ <STRONG>is_cleared</STRONG>
+ returns the value set by <STRONG><A HREF="curs_outopts.3x.html">clearok(3x)</A></STRONG>.
- <B>is_idcok</B>
- returns the value set in <B>idcok</B>
+ <STRONG>is_idcok</STRONG>
+ returns the value set by <STRONG><A HREF="idcok.3x.html">idcok(3x)</A></STRONG>.
- <B>is_idlok</B>
- returns the value set in <B>idlok</B>
+ <STRONG>is_idlok</STRONG>
+ returns the value set by <STRONG><A HREF="idlok.3x.html">idlok(3x)</A></STRONG>.
- <B>is_immedok</B>
- returns the value set in <B>immedok</B>
+ <STRONG>is_immedok</STRONG>
+ returns the value set by <STRONG><A HREF="curs_outopts.3x.html">immedok(3x)</A></STRONG>.
- <B>is_keypad</B>
- returns the value set in <B>keypad</B>
+ <STRONG>is_keypad</STRONG>
+ returns the value set by <STRONG><A HREF="curs_inopts.3x.html">keypad(3x)</A></STRONG>.
- <B>is_leaveok</B>
- returns the value set in <B>leaveok</B>
+ <STRONG>is_leaveok</STRONG>
+ returns the value set by <STRONG><A HREF="leaveok.3x.html">leaveok(3x)</A></STRONG>.
- <B>is_nodelay</B>
- returns the value set in <B>nodelay</B>
+ <STRONG>is_nodelay</STRONG>
+ returns the value set by <STRONG><A HREF="nodelay.3x.html">nodelay(3x)</A></STRONG>.
- <B>is_notimeout</B>
- returns the value set in <B>notimeout</B>
+ <STRONG>is_notimeout</STRONG>
+ returns the value set by <STRONG><A HREF="notimeout.3x.html">notimeout(3x)</A></STRONG>.
- <B>is_pad</B>
- returns <B>TRUE</B> if the window is a pad i.e., created by <B>newpad</B>
+ <STRONG>is_pad</STRONG> returns <STRONG>TRUE</STRONG> if the window is a pad; that is, it was created by
+ <STRONG><A HREF="newpad.3x.html">newpad(3x)</A></STRONG>.
- <B>is_scrollok</B>
- returns the value set in <B>scrollok</B>
+ <STRONG>is_scrollok</STRONG>
+ returns the value set by <STRONG><A HREF="scrollok.3x.html">scrollok(3x)</A></STRONG>.
- <B>is_subwin</B>
- returns <B>TRUE</B> if the window is a subwindow, i.e., created by <B>subwin</B>
- or <B>derwin</B>
+ <STRONG>is_subwin</STRONG>
+ returns <STRONG>TRUE</STRONG> if the window is a subwindow, that is, it was
+ created by <STRONG><A HREF="subwin.3x.html">subwin(3x)</A></STRONG> or <STRONG><A HREF="derwin.3x.html">derwin(3x)</A></STRONG>.
- <B>is_syncok</B>
- returns the value set in <B>syncok</B>
+ <STRONG>is_syncok</STRONG>
+ returns the value set by <STRONG><A HREF="syncok.3x.html">syncok(3x)</A></STRONG>.
- <B>wgetdelay</B>
- returns the delay timeout as set in <B>wtimeout</B>.
+ <STRONG>wgetdelay</STRONG>
+ returns the delay timeout set by <STRONG><A HREF="wtimeout.3x.html">wtimeout(3x)</A></STRONG>.
- <B>wgetparent</B>
- returns the parent WINDOW pointer for subwindows, or NULL for win-
- dows having no parent.
+ <STRONG>wgetparent</STRONG>
+ returns the parent <EM>WINDOW</EM> pointer for subwindows, or <STRONG>NULL</STRONG> for
+ windows having no parent.
- <B>wgetscrreg</B>
- returns the top and bottom rows for the scrolling margin as set in
- <B>wsetscrreg</B>.
+ <STRONG>wgetscrreg</STRONG>
+ stores the the top and bottom rows for the scrolling margin set
+ by <STRONG><A HREF="curs_outopts.3x.html">wsetscrreg(3x)</A></STRONG> in the corresponding arguments, returning <STRONG>ERR</STRONG>
+ upon failure and <STRONG>OK</STRONG> upon successful completion.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- These functions all return <B>TRUE</B> or <B>FALSE</B>, except as noted.
+ These functions return <STRONG>TRUE</STRONG> or <STRONG>FALSE</STRONG> except as noted.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- Both a macro and a function are provided for each name.
+ <EM>ncurses</EM> provides both a C function and a preprocessor macro for each
+ function documented in this page.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
- These routines are specific to ncurses. They were not supported on
+ These routines are specific to <EM>ncurses</EM>. They were not supported on
Version 7, BSD or System V implementations. It is recommended that any
- code depending on ncurses extensions be conditioned using NCURSES_VER-
- SION.
+ code depending on <EM>ncurses</EM> extensions be conditioned using
+ <STRONG>NCURSES_VERSION</STRONG>.
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <B><A HREF="curses.3X.html">curses(3X)</A></B>, <B><A HREF="curs_inopts.3X.html">curs_inopts(3X)</A></B>, <B><A HREF="curs_outopts.3X.html">curs_outopts(3X)</A></B>, <B><A HREF="curs_window.3X.html">curs_window(3X)</A></B>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_inopts.3x.html">curs_inopts(3x)</A></STRONG>, <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_window.3x.html">curs_window(3x)</A></STRONG>
- <B><A HREF="curs_opaque.3X.html">curs_opaque(3X)</A></B>
+ncurses 6.4 2024-03-16 <STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG>
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