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  * @Id: curs_trace.3x,v 1.8 2007/02/24 17:33:49 tom Exp @
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<H1>curs_trace 3x</H1>
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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
<STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>                                           <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>


</PRE>
<H2>NAME</H2><PRE>
       <STRONG>_tracef</STRONG>, <STRONG>_tracedump</STRONG>, <STRONG>_traceattr</STRONG>, <STRONG>_traceattr2</STRONG>,
       <STRONG>_nc_tracebits</STRONG>, <STRONG>_tracechar</STRONG>, <STRONG>_tracechtype</STRONG>, <STRONG>_tracechtype2</STRONG>,
       <STRONG>_tracemouse</STRONG>, <STRONG>trace</STRONG> - <STRONG>curses</STRONG> debugging routines


</PRE>
<H2>SYNOPSIS</H2><PRE>
       <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

       <STRONG>void</STRONG> <STRONG>_tracef(const</STRONG> <STRONG>char</STRONG> <STRONG>*format,</STRONG> <STRONG>...);</STRONG>
       <STRONG>void</STRONG> <STRONG>_tracedump(const</STRONG> <STRONG>char</STRONG> <STRONG>*label,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*win);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_traceattr(attr_t</STRONG> <STRONG>attr);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_traceattr2(int</STRONG> <STRONG>buffer,</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_nc_tracebits(void);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_tracechar(int);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_tracechtype(chtype</STRONG> <STRONG>ch);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_tracechtype2(int</STRONG> <STRONG>buffer,</STRONG> <STRONG>chtype</STRONG> <STRONG>ch);</STRONG>
       <STRONG>char</STRONG> <STRONG>*_tracemouse(const</STRONG> <STRONG>MEVENT</STRONG> <STRONG>*event);</STRONG>
       <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <STRONG>param);</STRONG>


</PRE>
<H2>DESCRIPTION</H2><PRE>
       The  <STRONG>trace</STRONG> routines are used for debugging the ncurses li-
       braries, as well as applications which use the ncurses li-
       braries.  These functions are normally available only with
       the debugging library <EM>libncurses</EM><STRONG>_</STRONG><EM>g.a</EM>, but may be  compiled
       into  any  model (shared, static, profile) by defining the
       symbol <STRONG>TRACE</STRONG>.

       The principal parts of this interface are the  <STRONG>trace</STRONG>  rou-
       tine which selectively enables different tracing features,
       and the <STRONG>_tracef</STRONG> routine which writes formatted data to the
       <EM>trace</EM> file.

       Calling  <STRONG>trace</STRONG>  with  a  nonzero  parameter opens the file
       <STRONG>trace</STRONG> in the current directory for output.  The  parameter
       is formed by OR'ing values from the list of <STRONG>TRACE_</STRONG><EM>xxx</EM> def-
       initions in <STRONG>&lt;curses.h&gt;</STRONG>.  These include:

       TRACE_DISABLE
            turn off tracing.

       TRACE_TIMES
            trace user and system times of updates.

       TRACE_TPUTS
            trace tputs calls.

       TRACE_UPDATE
            trace update actions, old &amp; new screens.

       TRACE_MOVE
            trace cursor movement and scrolling.

       TRACE_CHARPUT
            trace all character outputs.

       TRACE_ORDINARY
            trace all update actions.  The  old  and  new  screen
            contents  are  written to the trace file for each re-
            fresh.

       TRACE_CALLS
            trace all curses calls.  The parameters for each call
            are traced, as well as return values.

       TRACE_VIRTPUT
            trace virtual character puts, i.e., calls to <STRONG>addch</STRONG>.

       TRACE_IEVENT
            trace low-level input processing, including timeouts.

       TRACE_BITS
            trace state of TTY control bits.

       TRACE_ICALLS
            trace internal/nested calls.

       TRACE_CCALLS
            trace per-character calls.

       TRACE_DATABASE
            trace read/write of terminfo/termcap data.

       TRACE_ATTRS
            trace changes to video attributes and colors.

       TRACE_MAXIMUM
            maximum trace level,  enables  all  of  the  separate
            trace features.

       Some  tracing  features are enabled whenever the <STRONG>trace</STRONG> pa-
       rameter is nonzero.  Some features overlap.  The  specific
       names are used as a guideline.


</PRE>
<H2>RETURN VALUE</H2><PRE>
       Routines  which  return a value are designed to be used as
       parameters to the <STRONG>_tracef</STRONG> routine.


</PRE>
<H2>PORTABILITY</H2><PRE>
       These functions are not part of the XSI  interface.   Some
       other  curses  implementations  are known to have similar,
       undocumented features, but they are  not  compatible  with
       ncurses.


</PRE>
<H2>SEE ALSO</H2><PRE>
       <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.


                                                         <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
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