#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <xcb/xcb.h>

int main(void)
{
    xcb_connection_t *conn = xcb_connect(NULL, NULL);
    if (!conn)
    {
        printf("xcb_connect() failed; conn = %p\n", conn);
        return EXIT_FAILURE;
    }
    printf("connected to X; conn = %p\n", conn);

    xcb_screen_t *scr = xcb_setup_roots_iterator(
        xcb_get_setup(conn)
    ).data;

    xcb_window_t win = xcb_generate_id(conn);
    xcb_create_window(conn, XCB_COPY_FROM_PARENT, win, scr->root,
                      0, 0, 100, 100, 10, XCB_WINDOW_CLASS_INPUT_OUTPUT,
                      scr->root_visual, 0, NULL);
    xcb_map_window(conn, win);
    xcb_flush(conn);
    printf("window created; win = %d\n", win);

    sleep(5);

    xcb_unmap_window(conn, win);
    xcb_flush(conn);
    printf("window destroyed; win = %d\n", win);

    xcb_disconnect(conn);
    puts("disconnected from X");

    return EXIT_SUCCESS;
}