int ch;
ch = getch();

if(ch == KEY_LEFT)
printw("Left arrow is pressed\n");

/*
Compile: gcc main.c -lncurses
*/
#include <stdio.h>
#include <ncurses.h>
#define WIDTH 30
#define HEIGHT 10int startx = 0;
int starty = 0;char *choices[] = {"Choice 1","Choice 2","Choice 3","Choice 4","Exit",};int n_choices = sizeof(choices) / sizeof(char *);
void print_menu(WINDOW *menu_win, int highlight);
int main()
{ WINDOW *menu_win;int highlight = 1;int choice = 0;int c;initscr();clear();noecho();cbreak(); /*禁用行缓冲，直接传递所有输入*/startx = (80-WIDTH)/ 2;starty = (24-HEIGHT)/ 2;menu_win = newwin(HEIGHT, WIDTH, starty, startx);keypad(menu_win,TRUE);mvprintw(0, 0,"Use arrow keys to go up and down, Press enter to select a choice");refresh();print_menu(menu_win,highlight);while(1){ c = wgetch(menu_win);switch(c){ case KEY_UP:if(highlight == 1)highlight = n_choices;else--highlight;break;case KEY_DOWN:if(highlight == n_choices)highlight = 1;else++highlight;break;case 10:choice = highlight;break;default:mvprintw(24, 0, "Charcter pressed is = %3d \
                                 Hopefully it can be printed as '%c'", c, c);refresh();break;}print_menu(menu_win,highlight);if(choice != 0) /*用户必须要做一个选择*/break;}mvprintw(23, 0, "You chose choice %d with choice string %s\n", choice,choices[choice-1]);clrtoeol();refresh();endwin();return 0;
}void print_menu(WINDOW *menu_win, int highlight)
{int x, y, i;x = 2;y = 2;box(menu_win, 0, 0);for(i = 0; i < n_choices; ++i){if(highlight == i + 1)  /* 使选择的字符串高亮显示*/{wattron(menu_win,A_REVERSE);mvwprintw(menu_win, y, x, "%s", choices[i]);wattroff(menu_win,A_REVERSE);}elsemvwprintw(menu_win, y, x, "%s", choices[i]);++y;}wrefresh(menu_win);
}
/**
结果：
                         ┌────────────────────────────┐
                         │                            │
                         │ Choice 1                   │
                         │ Choice 2                   │
                         │ Choice 3                   │
                         │ Choice 4                   │
                         │ Exit                       │
                         │                            │
                         │                            │
                         └────────────────────────────┘
*/