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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, profile) by  defin-ing defining
       ing the symbol TRACE.

       The  principal  parts of this interface are the trace routine which se-lectively selectively
       lectively enables different 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 cur-rent current
       rent 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 features 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 routine.

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)