+/* input events */
+int rtk_input_key(rtk_widget *w, int key, int press);
+int rtk_input_mbutton(rtk_widget *w, int bn, int press, int x, int y);
+int rtk_input_mmotion(rtk_widget *w, int x, int y);
+
+/* misc */
+void rtk_fix_rect(rtk_rect *r);
+void rtk_rect_union(rtk_rect *a, const rtk_rect *b);