X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=Ada95%2Fhtml%2Fman%2Fcurs_attr.3x.html;fp=Ada95%2Fhtml%2Fman%2Fcurs_attr.3x.html;h=0000000000000000000000000000000000000000;hb=b1f61d9f3aa244512045a6b02e759825d7049d34;hp=5891268fd6cad16344ffda567511b25494bfb9d8;hpb=0eb88fc5281804773e2a0c7a488a4452463535ce;p=ncurses.git
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-
-
-
- attroff, wattroff, attron, wattron, attrset, wattrset,
- color_set, wcolor_set, standend, wstandend, standout,
- wstandout - curses character and window attribute control
- routines
-
-
-
-SYNOPSIS
- #include
- int attroff(int attrs);
- int wattroff(WINDOW *win, int attrs);
- int attron(int attrs);
- int wattron(WINDOW *win, int attrs);
- int attrset(int attrs);
- int wattrset(WINDOW *win, int attrs);
- int color_set(short color_pair_number, void* opts);
- int wcolor_set(WINDOW *win, short color_pair_number,
- void* opts);
- int standend(void);
- int wstandend(WINDOW *win);
- int standout(void);
- int wstandout(WINDOW *win);
- int attr_get(attr_t *attrs, short *pair, void *opts);
- int wattr_get(WINDOW *win, attr_t *attrs, short *pair,
- void *opts);
- int attr_off(attr_t attrs, void *opts);
- int wattr_off(WINDOW *win, attr_t attrs, void *opts);
- int attr_on(attr_t attrs, void *opts);
- int wattr_on(WINDOW *win, attr_t attrs, void *opts);
- int attr_set(attr_t attrs, void *opts);
- int wattr_set(WINDOW *win, attr_t attrs, void *opts);
- int chgat(int n, attr_t attr, short color,
- const void *opts)
- int wchgat(WINDOW *win, int n, attr_t attr,
- short color, const void *opts)
- int mvchgat(int y, int x, int n, attr_t attr,
- short color, const void *opts)
- int mvwchgat(WINDOW *win, int y, int x, int n,
- attr_t attr, short color, const void *opts)
-
-
-
-DESCRIPTION
- These routines manipulate the current attributes of the
- named window. The current attributes of a window apply to
- all characters that are written into the window with wad-
- dch, waddstr and wprintw. Attributes are a property of
- the character, and move with the character through any
- scrolling and insert/delete line/character operations. To
- the extent possible, they are displayed as appropriate
- modifications to the graphic rendition of characters put
- on the screen.
-
- The routine attrset sets the current attributes of the
- given window to attrs. The routine attroff turns off the
- named attributes without turning any other attributes on
- same as attron(A_STANDOUT). The routine standend is the
- same as attrset(A_NORMAL) or attrset(0), that is, it turns
- off all attributes.
-
- The routine color_set sets the current color of the given
- window to the foreground/background combination described
- by the color_pair_number. The parameter opts is reserved
- for future use, applications must supply a null pointer.
-
- The routine wattr_get returns the current attribute and
- color pair for the given window; attr_get returns the cur-
- rent attribute and color pair for stdscr. The remaining
- attr_* functions operate exactly like the corresponding
- attr* functions, except that they take arguments of type
- attr_t rather than int.
-
- The routine chgat changes the attributes of a given number
- of characters starting at the current cursor location of
- stdscr. It does not update the cursor and does not per-
- form wrapping. A character count of -1 or greater than
- the remaining window width means to change attributes all
- the way to the end of the current line. The wchgat func-
- tion generalizes this to any window; the mvwchgat function
- does a cursor move before acting. In these functions, the
- color argument is a color-pair index (as in the first
- argument of init_pair, see curs_color(3X)). The opts
- argument is not presently used, but is reserved for the
- future (leave it NULL).
-
- Attributes
- The following video attributes, defined in , can
- be passed to the routines attron, attroff, and attrset, or
- OR'ed with the characters passed to addch.
-
- center ; l l . A_NORMAL Normal display (no highlight)
- A_STANDOUT Best highlighting mode of the terminal.
- A_UNDERLINE Underlining A_REVERSE Reverse video
- A_BLINK Blinking A_DIM Half bright A_BOLD Extra
- bright or bold A_PROTECT Protected mode A_INVIS Invisi-
- ble or blank mode A_ALTCHARSET Alternate character set
- A_CHARTEXT Bit-mask to extract a character
- COLOR_PAIR(n) Color-pair number n
-
- The following macro is the reverse of COLOR_PAIR(n):
-
- PAIR_NUMBER(attrs) Returns the pair number associated
- with the COLOR_PAIR(n) attribute.
-
- The return values of many of these routines are not mean-
- ingful (they are implemented as macro-expanded assignments
- and simply return their argument). The SVr4 manual page
- claims (falsely) that these routines always return 1.
- Note that attroff, wattroff, attron, wattron, attrset,
- wattrset, standend and standout may be macros.
-
-
-
-PORTABILITY
- All these functions are supported in the XSI Curses stan-
- dard, Issue 4. The standard defined the dedicated type
- for highlights, attr_t, which is not defined in SVr4
- curses. The functions taking attr_t arguments are not sup-
- ported under SVr4.
-
- The XSI Curses standard states that whether the tradi-
- tional functions attron/attroff/attrset can manipulate
- attributes other than A_BLINK, A_BOLD, A_DIM, A_REVERSE,
- A_STANDOUT, or A_UNDERLINE is "unspecified". Under this
- implementation as well as SVr4 curses, these functions
- correctly manipulate all other highlights (specifically,
- A_ALTCHARSET, A_PROTECT, and A_INVIS).
-
- XSI Curses added the new entry points, attr_get, attr_on,
- attr_off, attr_set, wattr_on, wattr_off, wattr_get,
- wattr_set. These are intended to work with a new series
- of highlight macros prefixed with WA_.
-
- center ; l l . WA_NORMAL Normal display (no highlight)
- WA_STANDOUT Best highlighting mode of the terminal.
- WA_UNDERLINE Underlining WA_REVERSE Reverse video
- WA_BLINK Blinking WA_DIM Half bright WA_BOLD Extra
- bright or bold WA_ALTCHARSET Alternate character set
-
- The XSI curses standard specifies that each pair of corre-
- sponding A_ and WA_-using functions operates on the same
- current-highlight information.
-
- The XSI standard extended conformance level adds new high-
- lights A_HORIZONTAL, A_LEFT, A_LOW, A_RIGHT, A_TOP, A_VER-
- TICAL (and corresponding WA_ macros for each) which this
- curses does not yet support.
-
-
-
-SEE ALSO
- curses(3X), curs_addch(3X), curs_addstr(3X),
- curs_printw(3X)
-
-
-
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