doc/html/man/term_variables.3x.html

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  41 <H1 class="no-header">term_variables 3x</H1>
  42 <PRE>
  43 <STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG>                                   <STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG>
  44
  45
  46
  47
  48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
  49        <STRONG>SP</STRONG>, <STRONG>acs_map</STRONG>, <STRONG>boolcodes</STRONG>, <STRONG>boolfnames</STRONG>, <STRONG>boolnames</STRONG>, <STRONG>cur_term</STRONG>,
  50        <STRONG>numcodes</STRONG>, <STRONG>numfnames</STRONG>, <STRONG>numnames</STRONG>, <STRONG>strcodes</STRONG>, <STRONG>strfnames</STRONG>,
  51        <STRONG>strnames</STRONG>, <STRONG>ttytype</STRONG> - <STRONG>curses</STRONG> terminfo global variables
  52
  53
  54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
  55        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  56        <STRONG>#include</STRONG> <STRONG>&lt;term.h&gt;</STRONG>
  57
  58        <STRONG>chtype</STRONG> <STRONG>acs_map[];</STRONG>
  59
  60        <STRONG>SCREEN</STRONG> <STRONG>*</STRONG> <STRONG>SP;</STRONG>
  61
  62        <STRONG>TERMINAL</STRONG> <STRONG>*</STRONG> <STRONG>cur_term;</STRONG>
  63
  64        <STRONG>char</STRONG> <STRONG>ttytype[];</STRONG>
  65
  66        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>boolcodes;</STRONG>
  67        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>boolfnames;</STRONG>
  68        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>boolnames;</STRONG>
  69
  70        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>numcodes;</STRONG>
  71        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>numfnames;</STRONG>
  72        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>numnames;</STRONG>
  73
  74        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>strcodes;</STRONG>
  75        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>strfnames;</STRONG>
  76        <STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>*</STRONG> <STRONG>strnames;</STRONG>
  77
  78
  79 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
  80        This  page summarizes variables provided by the <STRONG>curses</STRONG> li-
  81        brary's low-level terminfo interface.  A more complete de-
  82        scription is given in the <STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></STRONG> manual page.
  83
  84        Depending  on the configuration, these may be actual vari-
  85        ables, or  macros  (see  <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>)  which  provide
  86        read-only  access  to <EM>curses</EM>'s state.  In either case, ap-
  87        plications should treat them as read-only to avoid confus-
  88        ing the library.
  89
  90
  91 </PRE><H3><a name="h3-Alternate-Character-Set-Mapping">Alternate Character Set Mapping</a></H3><PRE>
  92        After  initializing the curses or terminfo interfaces, the
  93        <STRONG>acs_map</STRONG> array holds information used  to  translate  cells
  94        with  the  <STRONG>A_ALTCHARSET</STRONG>  video attribute into line-drawing
  95        characters.
  96
  97        The encoding of the information in this array has  changed
  98        periodically.   Application developers need only know that
  99        it is used for the "ACS_" constants in &lt;curses.h&gt;.
 100
 101        The comparable data for the wide-character  library  is  a
 102        private variable.
 103
 104
 105 </PRE><H3><a name="h3-Current-Terminal-Data">Current Terminal Data</a></H3><PRE>
 106        After  initializing the curses or terminfo interfaces, the
 107        <STRONG>cur_term</STRONG> contains data describing  the  current  terminal.
 108        This variable is also set as a side-effect of <STRONG><A HREF="curs_initscr.3x.html">set_term(3x)</A></STRONG>
 109        and <STRONG><A HREF="curs_initscr.3x.html">delscreen(3x)</A></STRONG>.
 110
 111        It is possible to save a value of <STRONG>cur_term</STRONG> for  subsequent
 112        use  as  a  parameter  to  <STRONG>set_term</STRONG>, for switching between
 113        screens.  Alternatively, one can  save  the  return  value
 114        from <STRONG>newterm</STRONG> or <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG> to reuse in <STRONG>set_term</STRONG>.
 115
 116
 117 </PRE><H3><a name="h3-Terminfo-Names">Terminfo Names</a></H3><PRE>
 118        The  <STRONG><A HREF="tic.1m.html">tic(1)</A></STRONG>  and <STRONG><A HREF="infocmp.1m.html">infocmp(1)</A></STRONG> programs use lookup tables for
 119        the long and short names of terminfo capabilities, as well
 120        as  the  corresponding  names  for  termcap  capabilities.
 121        These are available to other  applications,  although  the
 122        hash-tables used by the terminfo and termcap functions are
 123        not available.
 124
 125        The long terminfo capability names  use  a  "l"  (ell)  in
 126        their names: <STRONG>boolfnames</STRONG>, <STRONG>numfnames</STRONG>, and <STRONG>strfnames</STRONG>.
 127
 128        These are the short names for terminfo capabilities: <STRONG>bool-</STRONG>
 129        <STRONG>names</STRONG>, <STRONG>numnames</STRONG>, and <STRONG>strnames</STRONG>.
 130
 131        These are the corresponding names  used  for  termcap  de-
 132        scriptions: <STRONG>boolcodes</STRONG>, <STRONG>numcodes</STRONG>, and <STRONG>strcodes</STRONG>.
 133
 134
 135 </PRE><H3><a name="h3-Terminal-Type">Terminal Type</a></H3><PRE>
 136        A  terminal  description  begins with one or more terminal
 137        names separated by "|" (vertical bars).  On initialization
 138        of the curses or terminfo interfaces, <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG> copies
 139        the terminal names to the array <STRONG>ttytype</STRONG>.
 140
 141
 142 </PRE><H3><a name="h3-Terminfo-Names">Terminfo Names</a></H3><PRE>
 143        In addition to the variables, <STRONG>&lt;term.h&gt;</STRONG> also defines a sym-
 144        bol  for each terminfo capability <EM>long</EM> <EM>name</EM>.  These are in
 145        terms of the symbol <STRONG>CUR</STRONG>, which is defined
 146
 147        #define CUR ((TERMTYPE *)(cur_term))-&gt;
 148
 149        These symbols provide a faster method of accessing termin-
 150        fo capabilities than using <STRONG><A HREF="curs_terminfo.3x.html">tigetstr(3x)</A></STRONG>, etc.
 151
 152        The  actual definition of <STRONG>CUR</STRONG> depends upon the implementa-
 153        tion, but each terminfo library provides these long  names
 154        defined  to  point  into  the current terminal description
 155        loaded into memory.
 156
 157
 158 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
 159        The low-level  terminfo  interface  is  initialized  using
 160        <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG>.   The upper-level curses interface uses the
 161        low-level terminfo interface, internally.
 162
 163
 164 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
 165        X/Open Curses does not describe any of  these  except  for
 166        <STRONG>cur_term</STRONG>.   (The  inclusion  of  <STRONG>cur_term</STRONG> appears to be an
 167        oversight, since other comparable low-level information is
 168        omitted by X/Open).
 169
 170        Other implementations may have comparable variables.  Some
 171        implementations provide the variables in their  libraries,
 172        but omit them from the header files.
 173
 174        All  implementations which provide terminfo interfaces add
 175        definitions as described in the  <STRONG>Terminfo</STRONG>  <STRONG>Names</STRONG>  section.
 176        Most,  but  not all, base the definition upon the <STRONG>cur_term</STRONG>
 177        variable.
 178
 179
 180 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
 181        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>,      <STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></STRONG>,      <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>,
 182        <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>.
 183
 184
 185
 186                                                      <STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG>
 187 </PRE>
 188 <div class="nav">
 189 <ul>
 190 <li><a href="#h2-NAME">NAME</a></li>
 191 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 192 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
 193 <ul>
 194 <li><a href="#h3-Alternate-Character-Set-Mapping">Alternate Character Set Mapping</a></li>
 195 <li><a href="#h3-Current-Terminal-Data">Current Terminal Data</a></li>
 196 <li><a href="#h3-Terminfo-Names">Terminfo Names</a></li>
 197 <li><a href="#h3-Terminal-Type">Terminal Type</a></li>
 198 <li><a href="#h3-Terminfo-Names">Terminfo Names</a></li>
 199 </ul>
 200 </li>
 201 <li><a href="#h2-NOTES">NOTES</a></li>
 202 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 203 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
 204 </ul>
 205 </div>
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