87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1998 - 1999
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//
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// File: common.h
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//
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//--------------------------------------------------------------------------
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#ifndef __common_h
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#define __common_h
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//
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// Avoid bringing in C runtime code for NO reason
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//
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#include "wianew.h"
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#include "debug.h"
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#include "dbmem.h"
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#include "cunknown.h"
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#include "strings.h"
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#ifndef ARRAYSIZE
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#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
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#endif
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#ifndef SIZEOF
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#define SIZEOF(a) sizeof(a)
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#endif
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/*-----------------------------------------------------------------------------
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/ Flags to control the trace output from parts of the common library
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/----------------------------------------------------------------------------*/
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#define TRACE_COMMON_STR 0x80000000
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#define TRACE_COMMON_ASSERT 0x40000000
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#define TRACE_COMMON_MEMORY 0x20000000
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/*-----------------------------------------------------------------------------
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/ Exit macros for macro
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/ - these assume that a label "exit_gracefully:" prefixes the prolog
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/ to your function
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/----------------------------------------------------------------------------*/
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#define ExitGracefully(hr, result, text) \
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{ TraceMsg(text); hr = result; goto exit_gracefully; }
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#define FailGracefully(hr, text) \
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{ if ( FAILED(hr) ) { TraceMsg(text); goto exit_gracefully; } }
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/*-----------------------------------------------------------------------------
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/ Object / memory release macros
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/----------------------------------------------------------------------------*/
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#define DoRelease(pInterface) \
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{ if ( pInterface ) { pInterface->Release(); pInterface = NULL; } }
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#define DoILFree(pidl) \
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{ if (pidl) {ILFree((LPITEMIDLIST)pidl); pidl = NULL;} }
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#define DoLocalFree(p) \
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{ if (p) {LocalFree((HLOCAL)p); p = NULL;} }
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#define DoCloseHandle(h) \
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{ if (h) {CloseHandle((HANDLE)h); h = NULL;} }
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#define DoDelete(ptr) \
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{ if (ptr) {delete ptr; ptr=NULL;}}
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/*-----------------------------------------------------------------------------
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/ String helper macros
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/----------------------------------------------------------------------------*/
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#define StringByteCopy(pDest, iOffset, sz) \
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{ memcpy(&(((LPBYTE)pDest)[iOffset]), sz, StringByteSize(sz)); }
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#define StringByteSize(sz) \
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((lstrlen(sz)+1)*SIZEOF(TCHAR))
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/*-----------------------------------------------------------------------------
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/ Other helpful macros
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/----------------------------------------------------------------------------*/
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#define ByteOffset(base, offset) \
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(((LPBYTE)base)+offset)
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#endif
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