// 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 #include "base/check.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_); DCHECK(oldobj_ != HGDI_ERROR); } ScopedSelectObject(const ScopedSelectObject&) = delete; ScopedSelectObject& operator=(const ScopedSelectObject&) = delete; ~ScopedSelectObject() { HGDIOBJ object = SelectObject(hdc_, oldobj_); DCHECK((GetObjectType(oldobj_) != OBJ_REGION && object) || (GetObjectType(oldobj_) == OBJ_REGION && object != HGDI_ERROR)); } private: const HDC hdc_; const HGDIOBJ oldobj_; }; } // namespace win } // namespace base #endif // BASE_WIN_SCOPED_SELECT_OBJECT_H_