/* stolen from wikipedia and modified a bit,

* compile like this:

* gcc -o test test.c -lxcb -std=c99

*/

#include <xcb/xcb.h>

#include <stdio.h>

#include <stdlib.h>

int main(int argc, char **argv)

{

int nwindow = 1;

int i;

xcb_connection_t *c;

xcb_screen_t *s;

xcb_window_t w;

xcb_gcontext_t g;

xcb_generic_event_t *e;

uint32_t mask;

uint32_t values[2];

int done = 0;

xcb_rectangle_t r = { 20, 20, 60, 60 };

if (argc > 1)

nwindow = atoi(argv[1]);

if (nwindow < 1)

{

fprintf(stderr, "Usage:\n%s <n>\tmap n windows\n", argv[0]);

exit(-1);

}

c = xcb_connect(NULL,NULL);

if (xcb_connection_has_error(c))

{

printf("Cannot open display\n");

exit(1);

}

s = xcb_setup_roots_iterator( xcb_get_setup(c) ).data;

fprintf(stderr, "width=%d height=%d\n", s->width_in_pixels, s->height_in_pixels);

mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;

values[0] = s->white_pixel;

values[1] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS;

for(i = 0; i < nwindow; i++)

{

w = xcb_generate_id(c);

xcb_create_window(c, s->root_depth, w, s->root,

(10 * i) % s->width_in_pixels, (10 * i) % s->height_in_pixels, 100, 100, 1,

XCB_WINDOW_CLASS_INPUT_OUTPUT, s->root_visual,

mask, values);

xcb_map_window(c, w);

}

xcb_flush(c);

printf("Done with setup\n");

while (!done && (e = xcb_wait_for_event(c)))

{

switch (e->response_type & ~0x80)

{

case XCB_KEY_PRESS:

done = 1;

break;

}

free(e);

}

xcb_disconnect(c);

return 0;

}