104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved
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//
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//----------------------------------------------------------------------------
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#pragma once
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// The following macros define the minimum required platform. The minimum required platform
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// is the earliest version of Windows, Internet Explorer etc. that has the necessary features to run
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// your application. The macros work by enabling all features available on platform versions up to and
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// including the version specified.
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// Modify the following defines if you have to target a platform prior to the ones specified below.
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// Refer to MSDN for the latest info on corresponding values for different platforms.
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#ifndef WINVER // Minimum platform is Windows 7
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#define WINVER 0x0601
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#endif
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#ifndef _WIN32_WINNT // Minimum platform is Windows 7
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#define _WIN32_WINNT 0x0601
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#endif
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#ifndef _WIN32_WINDOWS // Minimum platform is Windows 7
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#define _WIN32_WINDOWS 0x0601
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#endif
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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// Windows header files
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#include <windows.h>
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#include <dwrite.h>
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#include <d2d1.h>
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// C RunTime Header Files
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#include <stdlib.h>
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#include <malloc.h>
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#include <memory.h>
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#include <memory>
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#include <vector>
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// Ignore unreferenced parameters, since they are very common
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// when implementing callbacks.
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#pragma warning(disable : 4100)
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////////////////////////////////////////
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// COM inheritance helpers.
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// Releases a COM object and nullifies pointer.
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template <typename InterfaceType>
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inline void SafeRelease(InterfaceType** currentObject)
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{
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if (*currentObject != NULL)
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{
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(*currentObject)->Release();
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*currentObject = NULL;
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}
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}
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// Acquires an additional reference, if non-null.
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template <typename InterfaceType>
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inline InterfaceType* SafeAcquire(InterfaceType* newObject)
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{
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if (newObject != NULL)
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newObject->AddRef();
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return newObject;
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}
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// Sets a new COM object, releasing the old one.
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template <typename InterfaceType>
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inline void SafeSet(InterfaceType** currentObject, InterfaceType* newObject)
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{
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SafeAcquire(newObject);
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SafeRelease(¤tObject);
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currentObject = newObject;
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}
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// Maps exceptions to equivalent HRESULTs,
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inline HRESULT ExceptionToHResult() throw()
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{
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try
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{
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throw; // Rethrow previous exception.
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}
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catch(std::bad_alloc&)
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{
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return E_OUTOFMEMORY;
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}
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catch (...)
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{
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return E_FAIL;
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}
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}
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