gfx/src/X11UndefineNone.h
author Ryan VanderMeulen <ryanvm@gmail.com>
Fri, 01 Sep 2017 15:37:08 -0400
changeset 430269 1d02aa80f2f8c283428f0a8a6310e7d1fec3936c
parent 356894 fd597b8d1dd62e173a89ba7e85b0a78805fa8add
child 505759 f678d3408301ff96414b17c1cd4e20958c6034b2
permissions -rw-r--r--
Backed out 9 changesets (bug 1383880) for decision task bustage. Backed out changeset 53f5d47a7cb0 (bug 1383880) Backed out changeset a0abda41172a (bug 1383880) Backed out changeset 729a7e2091e8 (bug 1383880) Backed out changeset a33f5a14a471 (bug 1383880) Backed out changeset 5b10d321cfee (bug 1383880) Backed out changeset 8056488d8aed (bug 1383880) Backed out changeset e62c90e3c1e8 (bug 1383880) Backed out changeset 91f116ce6c2a (bug 1383880) Backed out changeset 045498bc36c4 (bug 1383880)

/* -*- 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