#include <xcb/xcb.h>

#include <stdlib.h>

int main (void) {
	int active = 1;

	unsigned short int window_width  = 640;
	unsigned short int window_height = 480;

	xcb_window_t          window     = 0;
	xcb_connection_t    * connection = NULL;
	xcb_screen_t        * screen     = NULL;
	xcb_generic_event_t * event      = NULL;

	unsigned int window_flags [2] = {
		0,
		XCB_EVENT_MASK_NO_EVENT        |
		XCB_EVENT_MASK_EXPOSURE        |
		XCB_EVENT_MASK_RESIZE_REDIRECT |
		XCB_EVENT_MASK_KEY_RELEASE     |
		XCB_EVENT_MASK_KEY_PRESS       |
		XCB_EVENT_MASK_BUTTON_RELEASE  |
		XCB_EVENT_MASK_BUTTON_PRESS
	};

	connection = xcb_connect (NULL, NULL);

	screen = xcb_setup_roots_iterator (xcb_get_setup (connection)).data;

	window = xcb_generate_id (connection);

	window_flags [0] = screen->black_pixel;

	xcb_create_window (connection, screen->root_depth, window, screen->root, 0, 0, window_width, window_height, 10, XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual,
	                   XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK, window_flags);

	xcb_map_window (connection, window);

	xcb_flush (connection);

	while (active) {
		event = xcb_wait_for_event (connection);

		switch (event->response_type & 127) {
			case XCB_EXPOSE:
				xcb_flush (connection);
				break;
			case XCB_KEY_PRESS:
				if ((int) ((xcb_key_press_event_t *) event)->detail == 24) {
					active = 0;
				}
				break;
			default:
				break;
		}

		free (event);
	}

	xcb_destroy_window (connection, window);

	xcb_disconnect (connection);

	return (0);
}