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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
</PRE>
<H2>NAME</H2><PRE>
<B>_tracef</B>, <B>_tracedump</B>, <B>_traceattr</B>, <B>_traceattr2</B>,
<B>_nc_tracebits</B>, <B>_tracechar</B>, <B>_tracechtype</B>, <B>_tracechtype2</B>,
<B>_tracemouse</B>, <B>trace</B> - <B>curses</B> debugging routines
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>#include</B> <B><curses.h></B>
<B>void</B> <B>_tracef(const</B> <B>char</B> <B>*format,</B> <B>...);</B>
<B>void</B> <B>_tracedump(const</B> <B>char</B> <B>*label,</B> <B>WINDOW</B> <B>*win);</B>
<B>char</B> <B>*_traceattr(attr_t</B> <B>attr);</B>
<B>char</B> <B>*_traceattr2(int</B> <B>buffer,</B> <B>chtype</B> <B>ch);</B>
<B>char</B> <B>*_nc_tracebits(void);</B>
<B>char</B> <B>*_tracechar(const</B> <B>unsigned</B> <B>char</B> <B>ch);</B>
<B>char</B> <B>*_tracechtype(chtype</B> <B>ch);</B>
<B>char</B> <B>*_tracechtype2(int</B> <B>buffer,</B> <B>chtype</B> <B>ch);</B>
<B>char</B> <B>*_tracemouse(const</B> <B>MEVENT</B> <B>*event);</B>
<B>void</B> <B>trace(const</B> <B>unsigned</B> <B>int</B> <B>param);</B>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <B>trace</B> routines are used for debugging the ncurses
libraries, as well as applications which use the ncurses
libraries. These functions are normally available only
with the debugging library <I>libncurses</I><B>_</B><I>g.a</I>, but may be com-
piled into any model (shared, static, profile) by defining
the symbol <B>TRACE</B>.
The principal parts of this interface are the <B>trace</B> rou-
tine which selectively enables different tracing features,
and the <B>_tracef</B> routine which writes formatted data to the
<I>trace</I> file.
Calling <B>trace</B> with a nonzero parameter opens the file
<B>trace</B> in the current directory for output. The parameter
is formed by OR'ing values from the list of <B>TRACE_</B><I>xxx</I> def-
initions in <B><curses.h></B>. 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 & 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
refresh.
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 <B>addch</B>.
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 <B>trace</B>
parameter 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 <B>_tracef</B> 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>
<B><A HREF="ncurses.3x.html">curses(3x)</A></B>.
</PRE>
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