+
+void process_error(xcb_generic_event_t *evt)
+{
+ xcb_request_error_t *e = (xcb_request_error_t *) evt;
+ warn("Failed request: %s, %s: %d.\n", xcb_event_get_request_label(e->major_opcode), xcb_event_get_error_label(e->error_code), e->bad_value);
+}