1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/gtk/nsGtkUtils.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,24 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* vim:expandtab:shiftwidth=4:tabstop=4:
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#ifndef nsGtkUtils_h__
1.12 +#define nsGtkUtils_h__
1.13 +
1.14 +#include <glib.h>
1.15 +
1.16 +// Some gobject functions expect functions for gpointer arguments.
1.17 +// gpointer is void* but C++ doesn't like casting functions to void*.
1.18 +template<class T> static inline gpointer
1.19 +FuncToGpointer(T aFunction)
1.20 +{
1.21 + return reinterpret_cast<gpointer>
1.22 + (reinterpret_cast<uintptr_t>
1.23 + // This cast just provides a warning if T is not a function.
1.24 + (reinterpret_cast<void (*)()>(aFunction)));
1.25 +}
1.26 +
1.27 +#endif // nsGtkUtils_h__
