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Source Code File 10-01_sub1

10-01_sub1.c

#include <ncurses.h>

int main()
{
    WINDOW *sub;
    
    initscr();
    
    /* create subwindow on stdscr */
    sub = subwin(stdscr,LINES-2,COLS-2,1,1);
    if( sub==NULL)
    {
        endwin();
        puts("Unable to create subwindow");
        return 1;
    }
    
    /* draw a box around stdscr */
    box(stdscr,0,0);
    /* put text to the subwindow */
    waddstr(sub,"I'm in a subwindow.\n");
    refresh();
    getch();
    
    endwin();
    return 0;
}

Output Screenshot

Notes

* This output shows a benefit of subwindows I describe in the book: Subwindow sub provides for a one-character offset inside the box around the standard screen. This way you can write text to the subwindow without clobbering the box around the parent window.