+ printw("Initializing pair 3 to %s/cyan (ACS_HLINE)\n", color_name(default_fg));
+ init_pair(3, (NCURSES_COLOR_T) default_fg, COLOR_CYAN);
+ printw("...and drawing a box which should be followed by lines\n");
+ bkgdset(ACS_HLINE | (attr_t) COLOR_PAIR(3));
+ /*
+ * Characters from vt100 line-drawing should be mapped to line-drawing,
+ * since A_ALTCHARSET is set in the background, and the character part
+ * of the background is replaced by the nonblank characters written.
+ *
+ * Characters not in the line-drawing range are usually sent as-is.
+ *
+ * With SVr4 curses it is possible to rely on this to mix uppercase text
+ * with the (lowercase) line-drawing characters. ncurses uses some of
+ * the uppercase characters for encoding thick- and double-lines.
+ */
+ row = 7;
+ mvprintw(row++, 10, "l");
+ for (chr = 0; chr < 32; ++chr)
+ addch(' ');
+ printw("x\n");
+ chr = 32;
+ while (chr < 128) {
+ if ((chr % 32) == 0)
+ mvprintw(row++, 10, "x");
+ addch((chtype) ((chr == 127) ? ' ' : chr));
+ if ((++chr % 32) == 0)
+ printw("x\n");
+ }
+ mvprintw(row++, 10, "m");
+ for (chr = 0; chr < 32; ++chr)
+ addch(' ');
+ printw("j\n");
+ getch();
+
+ bkgdset((chtype) (' ' | COLOR_PAIR(0)));