doc/html/man/curs_add_wch.3x.html

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  41 <H1 class="no-header">curs_add_wch 3x</H1>
  42 <PRE>
  43 <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>                                       <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>
  44
  45
  46
  47
  48 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
  49        <STRONG>add_wch</STRONG>,   <STRONG>wadd_wch</STRONG>,  <STRONG>mvadd_wch</STRONG>,  <STRONG>mvwadd_wch</STRONG>,  <STRONG>echo_wchar</STRONG>,
  50        <STRONG>wecho_wchar</STRONG> - add a complex character and rendition  to  a
  51        <STRONG>curses</STRONG> window, then advance the cursor
  52
  53
  54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
  55        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  56
  57        <STRONG>int</STRONG> <STRONG>add_wch(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  58        <STRONG>int</STRONG> <STRONG>wadd_wch(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  59        <STRONG>int</STRONG> <STRONG>mvadd_wch(</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  60        <STRONG>int</STRONG>  <STRONG>mvwadd_wch(</STRONG>  <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG>
  61        <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  62        <STRONG>int</STRONG> <STRONG>echo_wchar(</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  63        <STRONG>int</STRONG> <STRONG>wecho_wchar(</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>wch</EM> <STRONG>);</STRONG>
  64
  65
  66 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
  67
  68 </PRE><H3><a name="h3-add_wch">add_wch</a></H3><PRE>
  69        The <STRONG>add_wch</STRONG>, <STRONG>wadd_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, and <STRONG>mvwadd_wch</STRONG> functions
  70        put the complex character <EM>wch</EM> into the given window at its
  71        current position, which is then advanced.  These functions
  72        perform  wrapping and special-character processing as fol-
  73        lows:
  74
  75        <STRONG>o</STRONG>   If <EM>wch</EM> refers to a spacing character, then any  previ-
  76            ous  character  at  that  location  is removed.  A new
  77            character specified by <EM>wch</EM> is placed at that  location
  78            with  rendition  specified  by  <EM>wch</EM>.   The cursor then
  79            advances to the next spacing character on the screen.
  80
  81        <STRONG>o</STRONG>   If <EM>wch</EM> refers to a non-spacing character, all previous
  82            characters  at  that location are preserved.  The non-
  83            spacing characters of <EM>wch</EM> are  added  to  the  spacing
  84            complex  character, and the rendition specified by <EM>wch</EM>
  85            is ignored.
  86
  87        <STRONG>o</STRONG>   If the character  part  of  <EM>wch</EM>  is  a  tab,  newline,
  88            backspace  or  other  control character, the window is
  89            updated and the cursor moves as if <STRONG>addch</STRONG> were called.
  90
  91
  92 </PRE><H3><a name="h3-echo_wchar">echo_wchar</a></H3><PRE>
  93        The <STRONG>echo_wchar</STRONG> function is functionally  equivalent  to  a
  94        call  to <STRONG>add_wch</STRONG> followed by a call to <STRONG><A HREF="curs_refresh.3x.html">refresh(3x)</A></STRONG>.  Simi-
  95        larly, the <STRONG>wecho_wchar</STRONG> is  functionally  equivalent  to  a
  96        call  to  <STRONG>wadd_wch</STRONG>  followed  by  a call to <STRONG>wrefresh</STRONG>.  The
  97        knowledge that only a single character is being output  is
  98        taken  into consideration and, for non-control characters,
  99        a considerable performance gain might be seen by using the
 100        *<STRONG>echo</STRONG>* functions instead of their equivalents.
 101
 102
 103 </PRE><H3><a name="h3-Line-Graphics">Line Graphics</a></H3><PRE>
 104        Like  <STRONG><A HREF="curs_addch.3x.html">addch(3x)</A></STRONG>,  <STRONG>addch_wch</STRONG>  accepts symbols which make it
 105        simple to draw lines and  other  frequently  used  special
 106        characters.   These  symbols  correspond to the same VT100
 107        line-drawing set as <STRONG><A HREF="curs_addch.3x.html">addch(3x)</A></STRONG>.
 108
 109        <EM>Name</EM>              <EM>Unicode</EM>    <EM>Default</EM>   <EM>Description</EM>
 110        ----------------------------------------------------------------
 111        WACS_BLOCK        0x25ae     #         solid square block
 112        WACS_BOARD        0x2592     #         board of squares
 113        WACS_BTEE         0x2534     +         bottom tee
 114
 115        WACS_BULLET       0x00b7     o         bullet
 116        WACS_CKBOARD      0x2592     :         checker board (stipple)
 117        WACS_DARROW       0x2193     v         arrow pointing down
 118        WACS_DEGREE       0x00b0     '         degree symbol
 119        WACS_DIAMOND      0x25c6     +         diamond
 120        WACS_GEQUAL       0x2265     &gt;         greater-than-or-equal-to
 121        WACS_HLINE        0x2500     -         horizontal line
 122        WACS_LANTERN      0x2603     #         lantern symbol
 123        WACS_LARROW       0x2190     &lt;         arrow pointing left
 124        WACS_LEQUAL       0x2264     &lt;         less-than-or-equal-to
 125        WACS_LLCORNER     0x2514     +         lower left-hand corner
 126        WACS_LRCORNER     0x2518     +         lower right-hand corner
 127        WACS_LTEE         0x2524     +         left tee
 128        WACS_NEQUAL       0x2260     !         not-equal
 129        WACS_PI           0x03c0     *         greek pi
 130        WACS_PLMINUS      0x00b1     #         plus/minus
 131        WACS_PLUS         0x253c     +         plus
 132        WACS_RARROW       0x2192     &gt;         arrow pointing right
 133        WACS_RTEE         0x251c     +         right tee
 134        WACS_S1           0x23ba     -         scan line 1
 135        WACS_S3           0x23bb     -         scan line 3
 136        WACS_S7           0x23bc     -         scan line 7
 137        WACS_S9           0x23bd     _         scan line 9
 138        WACS_STERLING     0x00a3     f         pound-sterling symbol
 139        WACS_TTEE         0x252c     +         top tee
 140        WACS_UARROW       0x2191     ^         arrow pointing up
 141        WACS_ULCORNER     0x250c     +         upper left-hand corner
 142        WACS_URCORNER     0x2510     +         upper right-hand corner
 143        WACS_VLINE        0x2502     |         vertical line
 144
 145        The wide-character configuration of ncurses  also  defines
 146        symbols for thick- and double-lines:
 147
 148        <EM>Name</EM>              <EM>Unicode</EM>   <EM>Default</EM>   <EM>Description</EM>
 149        ---------------------------------------------------------------------
 150        WACS_T_ULCORNER   0x250f    +         thick upper left corner
 151        WACS_T_LLCORNER   0x2517    +         thick lower left corner
 152        WACS_T_URCORNER   0x2513    +         thick upper right corner
 153        WACS_T_LRCORNER   0x251b    +         thick lower right corner
 154        WACS_T_LTEE       0x252b    +         thick tee pointing right
 155        WACS_T_RTEE       0x2523    +         thick tee pointing left
 156        WACS_T_BTEE       0x253b    +         thick tee pointing up
 157        WACS_T_TTEE       0x2533    +         thick tee pointing down
 158        WACS_T_HLINE      0x2501    -         thick horizontal line
 159        WACS_T_VLINE      0x2503    |         thick vertical line
 160        WACS_T_PLUS       0x254b    +         thick large plus or crossover
 161        WACS_D_ULCORNER   0x2554    +         double upper left corner
 162        WACS_D_LLCORNER   0x255a    +         double lower left corner
 163        WACS_D_URCORNER   0x2557    +         double upper right corner
 164        WACS_D_LRCORNER   0x255d    +         double lower right corner
 165        WACS_D_RTEE       0x2563    +         double tee pointing left
 166        WACS_D_LTEE       0x2560    +         double tee pointing right
 167        WACS_D_BTEE       0x2569    +         double tee pointing up
 168        WACS_D_TTEE       0x2566    +         double tee pointing down
 169        WACS_D_HLINE      0x2550    -         double horizontal line
 170        WACS_D_VLINE      0x2551    |         double vertical line
 171        WACS_D_PLUS       0x256c    +         double large plus or crossover
 172
 173
 174 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
 175        All routines return the integer <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> on
 176        success.
 177
 178        Functions with a "mv" prefix first perform a cursor  move-
 179        ment  using  <STRONG>wmove</STRONG>, and return an error if the position is
 180        outside the window, or if the window pointer is null.
 181
 182
 183 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
 184        Note that <STRONG>add_wch</STRONG>, <STRONG>mvadd_wch</STRONG>, <STRONG>mvwadd_wch</STRONG>,  and  <STRONG>echo_wchar</STRONG>
 185        may be macros.
 186
 187
 188 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
 189        All  of  these  functions  are described in the XSI Curses
 190        standard, Issue 4.  The defaults specified for  line-draw-
 191        ing characters apply in the POSIX locale.
 192
 193        X/Open Curses makes it clear that the WACS_ symbols should
 194        be defined as a pointer to <STRONG>cchar_t</STRONG> data, e.g., in the dis-
 195        cussion of <STRONG>border_set</STRONG>.  A few implementations are problem-
 196        atic:
 197
 198        <STRONG>o</STRONG>   NetBSD curses defines the symbols as a <STRONG>wchar_t</STRONG>  within
 199            a <STRONG>cchar_t</STRONG>.
 200
 201        <STRONG>o</STRONG>   HPUX  curses  equates  some of the <EM>ACS</EM><STRONG>_</STRONG> symbols to the
 202            analogous <EM>WACS</EM><STRONG>_</STRONG> symbols as if the  <EM>ACS</EM><STRONG>_</STRONG>  symbols  were
 203            wide  characters.   The  misdefined  symbols  are  the
 204            arrows and other symbols which are not used for  line-
 205            drawing.
 206
 207        X/Open  Curses  does not define symbols for thick- or dou-
 208        ble-lines.   SVr4  curses  implementations  defined  their
 209        line-drawing  symbols  in  terms  of intermediate symbols.
 210        This implementation extends those symbols,  providing  new
 211        definitions which are not in the SVr4 implementations.
 212
 213
 214 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
 215        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_clear.3x.html">curs_clear(3x)</A></STRONG>,
 216        <STRONG><A HREF="curs_outopts.3x.html">curs_outopts(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>, <STRONG>putwc(3)</STRONG>
 217
 218
 219
 220                                                        <STRONG><A HREF="curs_add_wch.3x.html">curs_add_wch(3x)</A></STRONG>
 221 </PRE>
 222 <div class="nav">
 223 <ul>
 224 <li><a href="#h2-NAME">NAME</a></li>
 225 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 226 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
 227 <ul>
 228 <li><a href="#h3-add_wch">add_wch</a></li>
 229 <li><a href="#h3-echo_wchar">echo_wchar</a></li>
 230 <li><a href="#h3-Line-Graphics">Line Graphics</a></li>
 231 </ul>
 232 </li>
 233 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
 234 <li><a href="#h2-NOTES">NOTES</a></li>
 235 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 236 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
 237 </ul>
 238 </div>
 239 </BODY>
 240 </HTML>