/**

 * xdemo.c

 * Copyright (C) 2008 Markus Broeker

 */

#include <stdio.h>

#include <stdlib.h>

#include <X11/Xlib.h>

int main (int argc, char **argv)

{

    Window w = 0;

    Display *dpy = XOpenDisplay (NULL);

    XEvent xev;

    int active;

    if (dpy == NULL) {

        printf ("Error opening localhost:0\n");

        return EXIT_FAILURE;

    }

    XSynchronize (dpy, 1);

    w = XCreateSimpleWindow (dpy, DefaultRootWindow (dpy), 0, 0, 240, 60, 1, 1, 1);

    if (w < 0)

        return EXIT_FAILURE;

    printf ("WINDOW-ID: %ld\n", w);

    XRaiseWindow (dpy, w);

    XMapWindow (dpy, w);

    printf ("Press ESC to quit\n");

    active = 1;

    XSelectInput (dpy, w, KeyPressMask);

    while (active) {

        XNextEvent (dpy, &xev);

        switch (xev.type) {

        case KeyPress:

            if (xev.xkey.keycode == 9)

                active = 0;

            printf ("Keycode = %2u\n", xev.xkey.keycode);

            break;

        default:

            printf ("Unknown Event: %d\n", xev.type);

        }

    }

    XDestroyWindow (dpy, w);

    XCloseDisplay (dpy);

    return EXIT_SUCCESS;

}