X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fcurs_add_wch.3x.html;h=77ed34d591bd0f66543214d40f575af6852e9335;hp=02cbae7fa27835373da63b31c8e478dcf83485fa;hb=f86cbeb5f9bd96ab041d34039c35749a14965039;hpb=55ccd2b959766810cf7db8d1c4462f338ce0afc8 diff --git a/doc/html/man/curs_add_wch.3x.html b/doc/html/man/curs_add_wch.3x.html index 02cbae7f..77ed34d5 100644 --- a/doc/html/man/curs_add_wch.3x.html +++ b/doc/html/man/curs_add_wch.3x.html @@ -1,7 +1,7 @@ @@ -73,22 +73,21 @@ perform wrapping and special-character processing as fol- lows: - - If wch refers to a spacing character, then any previ- - ous character at that location is removed. A new - character specified by wch is placed at that location - with rendition specified by wch. The cursor then - advances to the next spacing character on the screen. + o If wch refers to a spacing character, then any previ- + ous character at that location is removed. A new + character specified by wch is placed at that location + with rendition specified by wch. The cursor then + advances to the next spacing character on the screen. - - If wch refers to a non-spacing character, all previ- - ous characters at that location are preserved. The - non-spacing characters of wch are added to the spac- - ing complex character, and the rendition specified by - wch is ignored. + o If wch refers to a non-spacing character, all previous + characters at that location are preserved. The non- + spacing characters of wch are added to the spacing + complex character, and the rendition specified by wch + is ignored. - - If the character part of wch is a tab, newline, - backspace or other control character, the window is - updated and the cursor moves as if addch(3x) were - called. + o If the character part of wch is a tab, newline, + backspace or other control character, the window is + updated and the cursor moves as if addch were called. The echo_wchar function is functionally equivalent to a call to add_wch followed by a call to refresh. Similarly, @@ -99,12 +98,88 @@ able performance gain might be seen by using the *echo* functions instead of their equivalents. + Line Graphics + Like addch(3x), addch_wch accepts symbols which make it + simple to draw lines and other frequently used special + characters. These symbols correspond to the same VT100 + line-drawing set as addch(3x). + + + Name Unicode Default Description + ---------------------------------------------------------------- + WACS_BLOCK 0x25ae # solid square block + WACS_BOARD 0x2592 # board of squares + WACS_BTEE 0x2534 + bottom tee + WACS_BULLET 0x00b7 o bullet + + WACS_CKBOARD 0x2592 : checker board (stipple) + WACS_DARROW 0x2193 v arrow pointing down + WACS_DEGREE 0x00b0 ' degree symbol + WACS_DIAMOND 0x25c6 + diamond + WACS_GEQUAL 0x2265 > greater-than-or-equal-to + WACS_HLINE 0x2500 - horizontal line + WACS_LANTERN 0x2603 # lantern symbol + WACS_LARROW 0x2190 < arrow pointing left + WACS_LEQUAL 0x2264 < less-than-or-equal-to + WACS_LLCORNER 0x2514 + lower left-hand corner + WACS_LRCORNER 0x2518 + lower right-hand corner + WACS_LTEE 0x2524 + left tee + WACS_NEQUAL 0x2260 ! not-equal + WACS_PI 0x03c0 * greek pi + WACS_PLMINUS 0x00b1 # plus/minus + WACS_PLUS 0x253c + plus + WACS_RARROW 0x2192 > arrow pointing right + WACS_RTEE 0x251c + right tee + WACS_S1 0x23ba - scan line 1 + WACS_S3 0x23bb - scan line 3 + WACS_S7 0x23bc - scan line 7 + WACS_S9 0x23bd _ scan line 9 + WACS_STERLING 0x00a3 f pound-sterling symbol + WACS_TTEE 0x252c + top tee + WACS_UARROW 0x2191 ^ arrow pointing up + WACS_ULCORNER 0x250c + upper left-hand corner + WACS_URCORNER 0x2510 + upper right-hand corner + WACS_VLINE 0x2502 | vertical line + + The wide-character configuration of ncurses also defines + symbols for thick- and double-lines: + + + Name Unicode Default Description + --------------------------------------------------------------------- + WACS_T_ULCORNER 0x250f + thick upper left corner + WACS_T_LLCORNER 0x2517 + thick lower left corner + WACS_T_URCORNER 0x2513 + thick upper right corner + WACS_T_LRCORNER 0x251b + thick lower right corner + WACS_T_LTEE 0x252b + thick tee pointing right + WACS_T_RTEE 0x2523 + thick tee pointing left + WACS_T_BTEE 0x253b + thick tee pointing up + WACS_T_TTEE 0x2533 + thick tee pointing down + WACS_T_HLINE 0x2501 - thick horizontal line + WACS_T_VLINE 0x2503 | thick vertical line + WACS_T_PLUS 0x254b + thick large plus or crossover + WACS_D_ULCORNER 0x2554 + double upper left corner + WACS_D_LLCORNER 0x255a + double lower left corner + WACS_D_URCORNER 0x2557 + double upper right corner + WACS_D_LRCORNER 0x255d + double lower right corner + WACS_D_RTEE 0x2563 + double tee pointing left + WACS_D_LTEE 0x2560 + double tee pointing right + WACS_D_BTEE 0x2569 + double tee pointing up + WACS_D_TTEE 0x2566 + double tee pointing down + WACS_D_HLINE 0x2550 - double horizontal line + WACS_D_VLINE 0x2551 | double vertical line + WACS_D_PLUS 0x256c + double large plus or crossover +

RETURN VALUES

        All routines return the integer ERR upon failure and OK on
        success.
 
+       Functions with a "mv" prefix first perform a cursor  move-
+       ment  using  wmove, and return an error if the position is
+       outside the window, or if the window pointer is null.
+

NOTES

@@ -114,19 +189,35 @@

PORTABILITY

-       All  these functions are described in the XSI Curses stan-
-       dard, Issue 4.  The defaults specified  for  forms-drawing
-       characters apply in the POSIX locale.
+       All  of  these  functions  are described in the XSI Curses
+       standard, Issue 4.  The defaults specified for  line-draw-
+       ing characters apply in the POSIX locale.
+
+       X/Open Curses makes it clear that the WACS_ symbols should
+       be defined as a pointer to cchar_t data, e.g., in the dis-
+       cussion of border_set.  A few implementations are problem-
+       atic:
+
+       o   NetBSD curses defines the symbols as a wchar_t  within
+           a cchar_t.
+
+       o   HPUX  curses  equates  some of the ACS_ symbols to the
+           analogous WACS_ symbols as if the  ACS_  symbols  were
+           wide  characters.   The  misdefined  symbols  are  the
+           arrows and other symbols which are not used for  line-
+           drawing.
 
-       XSI  documents  constants  beginning  with WACS_ which are
-       used for line-drawing.  Those  are  not  currently  imple-
-       mented in ncurses.
+       X/Open  Curses  does not define symbols for thick- or dou-
+       ble-lines.   SVr4  curses  implementations  defined  their
+       line-drawing  symbols  in  terms  of intermediate symbols.
+       This implementation extends those symbols,  providing  new
+       definitions which are not in the SVr4 implementations.

SEE ALSO

-       curses(3x),  curs_attr_get(3x),  curs_clear(3x), curs_out-
-       opts(3x), curs_refresh(3x), putwc(3)
+       curses(3x), curs_addch(3x), curs_attr(3x), curs_clear(3x),
+       curs_outopts(3x), curs_refresh(3x), putwc(3)