46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
//
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// gcroot.h - Template class that wraps GCHandle from mscorlib.dll.
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// Copyright (C) Microsoft Corporation
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// All rights reserved.
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//
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// This include file is provided for back-compatibilty.
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// Include <msclr\gcroot.h> and use ::msclr::gcroot instead of ::gcroot.
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//
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// Use this class to declare gc "pointers" that live in the C++ heap.
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//
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// Example:
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// struct StringList {
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// gcroot<String^> str;
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// StringList *next;
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// StringList(); // should have ctors and dtors
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// ~StringList();
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// };
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//
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// By convention, we maintain a 1-to-1 relationship between C++ objects
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// and the handle slots they "point" to. Thus, two distinct C++ objects
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// always refer to two distinct handles, even if they "point" to the same
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// object. Therefore, when the C++ object is destroyed, its handle can
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// be freed without error.
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//
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// Note that we cannot currently embed a GCHandle directly in an unmanaged C++
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// class. We therefore store a void*, and use the conversion methods of
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// GCHandle to reconstitute a GCHandle from the void* on demand.
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//
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// See msclr\gcroot.h for implementations details.
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#if _MSC_VER > 1000
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#pragma once
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#endif
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#if !defined(_INC_GCROOT)
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#define _INC_GCROOT
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#ifndef RC_INVOKED
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#include <stddef.h>
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#define __DEFINE_GCROOT_IN_GLOBAL_NAMESPACE
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#include <msclr\gcroot.h>
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#endif /* RC_INVOKED */
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#endif // _INC_GCROOT
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