Index: src/Makefile
==================================================================
--- src/Makefile
+++ src/Makefile
@@ -1,10 +1,11 @@
 SHARED_LIB = ${LIB_PREFIX}corefw${LIB_SUFFIX}
 LIB_MAJOR = 0
 LIB_MINOR = 0
 
 SRCS = array.c		\
+       box.c		\
        class.c		\
        int.c		\
        map.c		\
        object.c		\
        range.c		\

ADDED   src/box.c
Index: src/box.c
==================================================================
--- /dev/null
+++ src/box.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+
+#include "object.h"
+#include "box.h"
+
+struct CFWBox {
+	CFWObject obj;
+	void *ptr;
+	uint32_t type;
+	bool free;
+};
+
+static bool
+ctor(void *ptr, va_list args)
+{
+	CFWBox *box = ptr;
+
+	box->ptr = va_arg(args, void*);
+	box->type = va_arg(args, uint32_t);
+	box->free = va_arg(args, int);
+
+	return true;
+}
+
+static void
+dtor(void *ptr)
+{
+	CFWBox *box = ptr;
+
+	if (box->free)
+		free(box->ptr);
+}
+
+void*
+cfw_box_ptr(CFWBox *box)
+{
+	return box->ptr;
+}
+
+uint32_t
+cfw_box_type(CFWBox *box)
+{
+	return box->type;
+}
+
+static CFWClass class = {
+	.name = "CFWBox",
+	.size = sizeof(CFWBox),
+	.ctor = ctor,
+	.dtor = dtor
+};
+CFWClass *cfw_box = &class;

ADDED   src/box.h
Index: src/box.h
==================================================================
--- /dev/null
+++ src/box.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __COREFW_BOX_H__
+#define __COREFW_BOX_H__
+
+#include "class.h"
+
+typedef struct CFWBox CFWBox;
+extern CFWClass *cfw_box;
+extern void* cfw_box_ptr(CFWBox*);
+extern uint32_t cfw_box_type(CFWBox*);
+
+#endif