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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_WIN_SCOPED_SELECT_OBJECT_H_
#define BASE_WIN_SCOPED_SELECT_OBJECT_H_
#include <windows.h>
#include "base/logging.h"
#include "base/macros.h"
namespace base {
namespace win {
// Helper class for deselecting object from DC.
class ScopedSelectObject {
public:
ScopedSelectObject(HDC hdc, HGDIOBJ object)
: hdc_(hdc),
oldobj_(SelectObject(hdc, object)) {
DCHECK(hdc_);
DCHECK(object);
DCHECK(oldobj_ != NULL && oldobj_ != HGDI_ERROR);
}
~ScopedSelectObject() {
HGDIOBJ object = SelectObject(hdc_, oldobj_);
DCHECK((GetObjectType(oldobj_) != OBJ_REGION && object != NULL) ||
(GetObjectType(oldobj_) == OBJ_REGION && object != HGDI_ERROR));
}
private:
HDC hdc_;
HGDIOBJ oldobj_;
DISALLOW_COPY_AND_ASSIGN(ScopedSelectObject);
};
} // namespace win
} // namespace base
#endif // BASE_WIN_SCOPED_SELECT_OBJECT_H_
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