31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
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// DO NOT PUT #pragma once or include guard check here
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// This header is designed to be able to be included multiple times
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// As external code and 3rd party headers can collide with our platform defines or compiler emulation,
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// this header can be used to disable them. The corresponding 'PostExternalInclude.h' enables the emulation
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// and platform defines again.
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//
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// Usage:
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// #include "PreExternalInclude.h"
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// #include "SomeExternalCode.h"
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// #include "3rdParty.h"
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// #include "PostExternalInclude.h"
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#if DETAIL__PREEXTERNALINCLUDE_HAS_BEEN_INCLUDED
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#error "PreExternalInclude.h has been included more than once or PostExternalInclude.h is missing."
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#endif
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#include "Internal/UndefineCompilerMacros.h"
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#include "Internal/UndefineCoreMacros.h"
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#define DETAIL__PREEXTERNALINCLUDE_HAS_BEEN_INCLUDED
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// detect whether windows SDK winuser.h has been included before, to
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// optionally restore some state afterwards (some 3rd party libraries
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// include windows.h which defines a lot of names as macros)
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#if defined(_WINUSER_)
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# define DETAIL__WINUSER_H_HAS_BEEN_INCLUDED 1
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#else
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# define DETAIL__WINUSER_H_HAS_BEEN_INCLUDED 0
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#endif
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