use_default_colors(3X)use_default_colors(3X)NAMEdft_fgbg - use terminal's default colors
This is an extension to the curses library. It is 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). Because they are designed to support this, their
design usually includes features to change the default foreground or
background colors so that they do not match the assumption in XSI
curses of white on black.
Applications that paint a colored background over the whole screen are
not adversely impacted by this type of terminal design. However, there
are applications that are designed to work with the default background.
The function returns the integer ERR upon failure and OK on success.
It will fail if either the terminal does not support the orig_pair or
orig_colors capability. If the initialize_pair capability is found,
this causes an error as well.
Associated with this extension, the init_pair(3X) function accepts neg‐
ative arguments to specify default foreground or background colors.
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.
SEE ALSOcurs_color(3X), ded(1).
Thomas Dickey (from an analysis of the requirements for color xterm for
XFree86 3.1.2C, February 1996).