+xcb_screen_t *root_screen;
+static xcb_get_input_focus_cookie_t focus_cookie;
+
+/*
+ * Having verboselog(), errorlog() and debuglog() is necessary when using libi3.
+ *
+ */
+void verboselog(char *fmt, ...) {
+ va_list args;
+
+ va_start(args, fmt);
+ vfprintf(stdout, fmt, args);
+ va_end(args);
+}
+
+void errorlog(char *fmt, ...) {
+ va_list args;
+
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+}
+
+void debuglog(char *fmt, ...) {
+}
+
+/*
+ * Restores the X11 input focus to whereever it was before.
+ * This is necessary because i3-input’s window has override_redirect=1
+ * (→ unmanaged by the window manager) and thus i3-input changes focus itself.
+ * This function is called on exit().
+ *
+ */
+static void restore_input_focus(void) {
+ xcb_generic_error_t *error;
+ xcb_get_input_focus_reply_t *reply = xcb_get_input_focus_reply(conn, focus_cookie, &error);
+ if (error != NULL) {
+ fprintf(stderr, "[i3-input] ERROR: Could not restore input focus (X error %d)\n", error->error_code);
+ return;
+ }
+ xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, reply->focus, XCB_CURRENT_TIME);
+ xcb_flush(conn);
+}