@@ -1,7 +1,8 @@
 /*
  * Copyright (c) 2011, 2012, Dillon Aumiller <dillonaumiller@gmail.com>
+ * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
  *
  * https://webkeks.org/hg/objgui/
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -23,11 +24,15 @@
 //==================================================================================================================================
 // OGBox.m
 //==================================================================================================================================
 #include <malloc.h>
 #include <windows.h>
+
+#import <ObjFW/OFNotImplementedException.h>
+
 #import "OGBox.h"
+
 //==================================================================================================================================
 @implementation OGBox
 //----------------------------------------------------------------------------------------------------------------------------------
 + box
 {
@@ -65,12 +70,14 @@
     fill: (BOOL)fill
        padding: (float)padding
 {
 }
 //----------------------------------------------------------------------------------------------------------------------------------
-- (void)resizeChildren
+- (void)OG_resizeChildren
 {
+  @throw [OFNotImplementedException exceptionWithClass: isa
+                                              selector: _cmd];
 }
 //----------------------------------------------------------------------------------------------------------------------------------
 - (int)MessageReceived : (HWND)hwnd : (UINT)msg : (WPARAM)wparam : (LPARAM)lparam
 {
   HWND parent;