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Source Code File 09-06_quad

09-06_quad.c

#include <ncurses.h>
       
int main()
{   
    WINDOW *a,*b,*c,*d;
    int maxx,maxy,halfx,halfy;
    
    /* initialize stuff */
    initscr();
    refresh();
    start_color();
    init_pair(1,COLOR_BLACK,COLOR_BLUE);
    init_pair(2,COLOR_BLACK,COLOR_RED);
    init_pair(3,COLOR_BLACK,COLOR_GREEN);
    init_pair(4,COLOR_BLACK,COLOR_CYAN);

    /* calculate window sizes and locations */
    getmaxyx(stdscr,maxy,maxx);
    halfx = maxx >> 1;
    halfy = maxy >> 1;

    /* create four quarter windows */
    a = newwin(halfy,halfx,0,0);
    b = newwin(halfy,halfx,0,halfx);
    c = newwin(halfy,halfx,halfy,0);
    d = newwin(halfy,halfx,halfy,halfx);
    if( a==NULL || b==NULL || c==NULL || d==NULL)
    {
        endwin();
        puts("Some kind of error creating the windows");
        return 1;
    }

    /* Write to each window */
    wbkgd(a,COLOR_PAIR(1));
    mvwaddstr(a,0,0,"This is window A\n");
    wbkgd(b,COLOR_PAIR(2));
    mvwaddstr(b,0,0,"This is window B\n");
    wbkgd(c,COLOR_PAIR(3));
    mvwaddstr(c,0,0,"This is window C\n");
    wbkgd(d,COLOR_PAIR(4));
    mvwaddstr(d,0,0,"This is window D\n");
    /* update the windows */
    wrefresh(a);
    wrefresh(b);
    wrefresh(c);
    wrefresh(d);
    /* pause */
    getch();

    endwin();
    return 0;
}

Output Screenshot

Notes

* Adding color makes the code longer, but the output is far more pleasing.