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Source Code File 11-05_clobber

11-05_clobber.c

#include <ncurses.h>
       
int main()
{
    WINDOW *red,*blue;
    int x;
    
    initscr();
    refresh();

    /* colors */
    start_color();
    init_pair(1,COLOR_WHITE,COLOR_RED);
    init_pair(2,COLOR_WHITE,COLOR_BLUE);

    /* create windows */
    red = newwin(10,24,5,10);
    blue = newwin(10,24,5,40);
    if( red==NULL || blue==NULL)
    {
        endwin();
        puts("Unable to create windows");
        return 1;
    }

    /* color and fill windows */
    wbkgd(red,COLOR_PAIR(1));
    wbkgd(blue,COLOR_PAIR(2));
    for(x=0;x<34;x++)
    {
        waddstr(red,"red    ");
        waddstr(blue,"   blue");
    }
    wrefresh(red);
    wrefresh(blue);
    getch();

    /* copy window */
    copywin(red,blue,0,0,1,4,5,10,FALSE);
    wrefresh(blue);
    getch();

    endwin();
    return 0;
}

Output Screenshot

(Click image to see result.)

Notes

* The code is essentially identical to 11-04_copywin.c, with the change at Line 39 of TRUE to FALSE. The result, as seen in the output above, is that a given chunk of window blue is completely replaced with the contents of window red.