100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
//____________________________________________________________________________
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1995 - 1999
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//
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// File: macros.h
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//
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// Contents: Useful macros
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//
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// Macros: ARRAYLEN
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//
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// BREAK_ON_FAIL(hresult)
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// BREAK_ON_FAIL(hresult)
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//
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// DECLARE_IUNKNOWN_METHODS
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// DECLARE_STANDARD_IUNKNOWN
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// IMPLEMENT_STANDARD_IUNKNOWN
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//
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// SAFE_RELEASE
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//
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// DECLARE_SAFE_INTERFACE_PTR_MEMBERS
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//
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// History: 6/3/1996 RaviR Created
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// 7/23/1996 JonN Added exception handling macros
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//
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//____________________________________________________________________________
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#ifndef _MACROS_H_
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#define _MACROS_H_
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//____________________________________________________________________________
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//
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// Macro: ARRAYLEN
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//
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// Purpose: To determine the length of an array.
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//____________________________________________________________________________
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//
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#define ARRAYLEN(a) (sizeof(a) / sizeof((a)[0]))
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//____________________________________________________________________________
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//
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// Macros: BREAK_ON_FAIL(hresult), BREAK_ON_ERROR(lastError)
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//
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// Purpose: To break out of a loop on error.
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//____________________________________________________________________________
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//
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#define BREAK_ON_FAIL(hr) if (FAILED(hr)) { break; } else 1;
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#define BREAK_ON_ERROR(lr) if (lr != ERROR_SUCCESS) { break; } else 1;
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#define RETURN_ON_FAIL(hr) if (FAILED(hr)) { return(hr); } else 1;
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#define THROW_ON_FAIL(hr) if (FAILED(hr)) { _com_issue_error(hr); } else 1;
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//____________________________________________________________________________
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//
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// Macros: DwordAlign(n)
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//____________________________________________________________________________
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//
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#define DwordAlign(n) (((n) + 3) & ~3)
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//____________________________________________________________________________
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//
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// Macros: IF_NULL_RETURN_INVALIDARG
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//____________________________________________________________________________
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//
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#define IF_NULL_RETURN_INVALIDARG(x) \
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{ \
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ASSERT((x) != NULL); \
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if ((x) == NULL) \
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return E_INVALIDARG; \
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}
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#define IF_NULL_RETURN_INVALIDARG2(x, y) \
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IF_NULL_RETURN_INVALIDARG(x) \
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IF_NULL_RETURN_INVALIDARG(y)
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#define IF_NULL_RETURN_INVALIDARG3(x, y, z) \
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IF_NULL_RETURN_INVALIDARG(x) \
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IF_NULL_RETURN_INVALIDARG(y) \
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IF_NULL_RETURN_INVALIDARG(z)
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#define RELEASE_DATAOBJECT(pDataObj) \
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{\
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if ( (pDataObj) && (!IS_SPECIAL_DATAOBJECT(pDataObj))) \
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pDataObj->Release();\
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}
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#endif // _MACROS_H_
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