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46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_WIN_SCOPED_GDI_OBJECT_H_
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#define BASE_WIN_SCOPED_GDI_OBJECT_H_
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#include <windows.h>
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#include "base/scoped_generic.h"
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namespace base {
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namespace win {
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namespace internal {
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template <class T>
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struct ScopedGDIObjectTraits {
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static T InvalidValue() { return nullptr; }
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static void Free(T object) { DeleteObject(object); }
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};
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// An explicit specialization for HICON because we have to call DestroyIcon()
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// instead of DeleteObject() for HICON.
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template <>
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void inline ScopedGDIObjectTraits<HICON>::Free(HICON icon) {
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DestroyIcon(icon);
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}
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} // namespace internal
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// Like ScopedHandle but for GDI objects.
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template <class T>
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using ScopedGDIObject = ScopedGeneric<T, internal::ScopedGDIObjectTraits<T>>;
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// Typedefs for some common use cases.
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typedef ScopedGDIObject<HBITMAP> ScopedBitmap;
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typedef ScopedGDIObject<HRGN> ScopedRegion;
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typedef ScopedGDIObject<HFONT> ScopedHFONT;
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typedef ScopedGDIObject<HICON> ScopedHICON;
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} // namespace win
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} // namespace base
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#endif // BASE_WIN_SCOPED_GDI_OBJECT_H_
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