X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fdefault_colors.3x.html;h=5e3749b4a09ff9858cb300cc37268e147cf0543f;hp=c91d0119598baba05d9856c9dc6d2599ce7007cf;hb=HEAD;hpb=d97989d1e0db7282c723cabb44b991b951790006 diff --git a/doc/html/man/default_colors.3x.html b/doc/html/man/default_colors.3x.html index c91d0119..14a0f8e3 100644 --- a/doc/html/man/default_colors.3x.html +++ b/doc/html/man/default_colors.3x.html @@ -1,6 +1,7 @@ -
--default_colors(3x) default_colors(3x) +default_colors(3x) Library calls default_colors(3x)
- use_default_colors, assume_default_colors - use terminal's default col- - ors + use_default_colors, assume_default_colors - use terminal's default + colors in curses
#include <curses.h> int use_default_colors(void); - int assume_default_colors(int fg, int bg); + int assume_default_colors(int fg, int bg);
- The use_default_colors and assume_default_colors functions are exten- - sions to the curses library. They are used with terminals that support - ISO 6429 color, or equivalent. These terminals allow the application - to reset color to an unspecified default value (e.g., with SGR 39 or - SGR 49). + The use_default_colors and assume_default_colors functions are + extensions to the curses library. They are used with terminals that + support ISO 6429 color, or equivalent. These terminals allow the + application to reset color to an unspecified default value (e.g., with + SGR 39 or SGR 49). Applications that paint a colored background over the whole screen do not take advantage of SGR 39 and SGR 49. Some applications are @@ -71,8 +72,8 @@ text. For example, there are several implementations of the ls program which use colors to denote different file types or permissions. These "color ls" programs do not necessarily modify the background color, - typically using only the setaf terminfo capability to set the fore- - ground color. Full-screen applications that use default colors can + typically using only the setaf terminfo capability to set the + foreground color. Full-screen applications that use default colors can achieve similar visual effects. The first function, use_default_colors tells the curses library to @@ -81,23 +82,23 @@ default background and init_pair(x,-1,COLOR_BLUE) will initialize pair x as default foreground on blue. - The other, assume_default_colors is a refinement which tells which col- - ors to paint for color pair 0. This function recognizes a special + The other, assume_default_colors is a refinement which tells which + colors to paint for color pair 0. This function recognizes a special color number -1, which denotes the default terminal color. The following are equivalent: use_default_colors(); assume_default_colors(-1,-1); - These are ncurses extensions. For other curses implementations, color - number -1 does not mean anything, just as for ncurses before a success- - ful call of use_default_colors or assume_default_colors. + These are ncurses extensions. For other curses implementations, color + number -1 does not mean anything, just as for ncurses before a + successful call of use_default_colors or assume_default_colors. Other curses implementations do not allow an application to modify color pair 0. They assume that the background is COLOR_BLACK, but do not ensure that the color pair 0 is painted to match the assumption. If your application does not use either use_default_colors or - assume_default_colors ncurses will paint a white foreground (text) with + assume_default_colors ncurses will paint a white foreground (text) with black background for color pair 0. @@ -112,7 +113,7 @@ Associated with this extension, the init_pair function accepts negative arguments to specify default foreground or background colors. - The use_default_colors function was added to support ded. This is a + The use_default_colors function was added to support ded. This is a full-screen application which uses curses to manage only part of the screen. The bottom portion of the screen, which is of adjustable size, is left uncolored to display the results from shell commands. The top @@ -120,35 +121,35 @@ ls" programs. Attempting to manage the background color of the screen for this application would give unsatisfactory results for a variety of reasons. This extension was devised after noting that color xterm (and - similar programs) provides a background color which does not necessar- - ily correspond to any of the ANSI colors. While a special terminfo - entry could be constructed using nine colors, there was no mechanism - provided within curses to account for the related orig_pair and - back_color_erase capabilities. + similar programs) provides a background color which does not + necessarily correspond to any of the ANSI colors. While a special + terminfo entry could be constructed using nine colors, there was no + mechanism provided within curses to account for the related orig_pair + and back_color_erase capabilities. - The assume_default_colors function was added to solve a different prob- - lem: support for applications which would use environment variables and - other configuration to bypass curses' notion of the terminal's default - colors, setting specific values. + The assume_default_colors function was added to solve a different + problem: support for applications which would use environment variables + and other configuration to bypass curses' notion of the terminal's + default colors, setting specific values.
- These routines are specific to ncurses. They were not supported on + These routines are specific to ncurses. They were not supported on Version 7, BSD or System V implementations. It is recommended that any code depending on them be conditioned using NCURSES_VERSION. -
- curs_color(3x), ded(1). - - -
+
Thomas Dickey (from an analysis of the requirements for color xterm for XFree86 3.1.2C, February 1996). +
+ ded(1), curs_color(3x) + + - default_colors(3x) +ncurses 6.5 2024-04-13 default_colors(3x)