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curs_trace(3X)									   curs_trace(3X)

NAME
       _tracef,  _tracedump,  _traceattr,  _traceattr2,  _nc_tracebits, _tracechar, _tracechtype,
       _tracechtype2, _tracemouse, trace - curses debugging routines

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

DESCRIPTION
       The trace 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 libncurses_g.a, but may be compiled into any model (shared, static, pro-
       file) by defining the symbol TRACE.

       The principal parts of this interface are the trace routine which selectively enables dif-
       ferent tracing features, and the _tracef routine which writes formatted data to the  trace
       file.

       Calling	trace  with a nonzero parameter opens the file trace in the current directory for
       output.	The parameter is formed by OR'ing values from the list of  TRACE_xxx  definitions
       in <curses.h>.  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 addch.

       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 trace parameter is nonzero.	Some fea-
	    tures overlap.  The specific names are used as a guideline.

RETURN VALUE
       Routines which return a value are designed to be used as parameters to  the  _tracef  rou-
       tine.

PORTABILITY
       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.

SEE ALSO
       curses(3X).

										   curs_trace(3X)
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