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Diffstat (limited to 'gfx/src/X11UndefineNone.h')
| -rw-r--r-- | gfx/src/X11UndefineNone.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gfx/src/X11UndefineNone.h b/gfx/src/X11UndefineNone.h new file mode 100644 index 000000000..638bd0419 --- /dev/null +++ b/gfx/src/X11UndefineNone.h @@ -0,0 +1,23 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +// The header <X11/X.h> defines "None" as a macro that expands to "0L". +// This is terrible because many enumerations have an enumerator named "None". +// To work around this, we undefine the macro "None", and define a replacement +// macro named "X11None". +// Include this header after including X11 headers, where necessary. +#ifdef None +# undef None +# define X11None 0L +// <X11/X.h> also defines "RevertToNone" as a macro that expands to "(int)None". +// Since we are undefining "None", that stops working. To keep it working, +// we undefine "RevertToNone" and redefine it in terms of "X11None". +# ifdef RevertToNone +# undef RevertToNone +# define RevertToNone (int)X11None +# endif +#endif + |