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diff --git a/ganv/wrap.hpp b/ganv/wrap.hpp
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+++ b/ganv/wrap.hpp
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+/* This file is part of Ganv.
+ * Copyright 2007-2015 David Robillard <http://drobilla.net>
+ *
+ * Ganv is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or any later version.
+ *
+ * Ganv is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with Ganv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GANV_WRAP_HPP
+#define GANV_WRAP_HPP
+
+#include <glib.h>
+
+#define CONNECT_PROP_SIGNAL(gobj, name, notify, handler) \
+	g_signal_connect(gobj, "notify::" #name, \
+	                 G_CALLBACK(notify), &_signal_##name); \
+	_signal_##name.connect(sigc::mem_fun(this, handler));
+
+#define SIGNAL1(name, argtype) \
+public: \
+	virtual bool on_##name(argtype arg) { return true; } \
+	sigc::signal<bool, argtype>& signal_##name() { return _signal_##name; } \
+private: \
+	sigc::signal<bool, argtype> _signal_##name;
+
+#define RW_PROPERTY(type, name) \
+	virtual type get_##name() const { \
+		type value; \
+		g_object_get(G_OBJECT(_gobj), #name, &value, NULL); \
+		return value; \
+	} \
+	virtual void set_##name(type value) { \
+		g_object_set(G_OBJECT(_gobj), #name, value, NULL); \
+	} \
+	SIGNAL1(name, type) \
+	public:
+
+#define RW_OBJECT_PROPERTY(type, name) \
+	type get_##name() const { \
+		if (!_gobj) return NULL; \
+		Ganv##type ptr; \
+		g_object_get(G_OBJECT(_gobj), #name, &ptr, NULL); \
+		return Glib::wrap(ptr); \
+	} \
+	void set_##name(type value) { \
+		if (!_gobj) return; \
+		ganv_item_set(GANV_ITEM(_gobj), \
+		              #name, value->gobj(), \
+		              NULL); \
+	}
+
+#define METHOD0(prefix, name) \
+	virtual void name() { \
+		prefix##_##name(gobj()); \
+	}
+
+#define METHOD1(prefix, name, t1, a1) \
+	virtual void name(t1 a1) { \
+		prefix##_##name(gobj(), a1); \
+	}
+
+#define METHODRET0(prefix, ret, name) \
+	virtual ret name() const { \
+		return prefix##_##name(gobj()); \
+	}
+
+#define METHODRET1(prefix, ret, name, t1, a1) \
+	virtual ret name(t1 a1) { \
+		return prefix##_##name(gobj(), a1); \
+	}
+
+#define METHODRET2(prefix, ret, name, t1, a1, t2, a2) \
+	virtual ret name(t1 a1, t2 a2) { \
+		return prefix##_##name(gobj(), a1, a2); \
+	}
+
+#define METHODRETWRAP0(prefix, ret, name) \
+	virtual ret name() const { \
+		if (gobj()) { \
+			return Glib::wrap(prefix##_##name(gobj())); \
+		} else { \
+			return NULL; \
+		} \
+	}
+
+#define METHOD2(prefix, name, t1, a1, t2, a2) \
+	virtual void name(t1 a1, t2 a2) { \
+		prefix##_##name(gobj(), a1, a2); \
+	}
+
+#define METHOD3(prefix, name, t1, a1, t2, a2, t3, a3) \
+	virtual void name(t1 a1, t2 a2, t3 a3) { \
+		prefix##_##name(gobj(), a1, a2, a3); \
+	}
+
+#define METHOD4(prefix, name, t1, a1, t2, a2, t3, a3, t4, a4) \
+	virtual void name(t1 a1, t2 a2, t3 a3, t4 a4) { \
+		prefix##_##name(gobj(), a1, a2, a3, a4); \
+	}
+
+#define GANV_GLIB_WRAP(Name) \
+	namespace Ganv { \
+	class Name; \
+	} \
+	namespace Glib { \
+	/** Return a Ganv::CPPType wrapper for a CType. */ \
+	static inline Ganv::Name* \
+	wrap(Ganv##Name* gobj) \
+	{ \
+		if (gobj) { \
+			return (Ganv::Name*)ganv_item_get_wrapper(GANV_ITEM(gobj)); \
+		} else { \
+			return NULL; \
+		} \
+	} \
+	/** Return a Ganv::CPPType wrapper for a CType. */ \
+	static inline const Ganv::Name* \
+	wrap(const Ganv##Name* gobj) \
+	{ \
+		return wrap((Ganv##Name*)gobj); \
+	} \
+	}
+
+#endif  // GANV_WRAP_HPP