57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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/*++
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Copyright (c) 1997-1999 Microsoft Corporation
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Module Name:
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commsg.h
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Abstract:
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HRESULT <-> Win32 error mapping macros.
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Author:
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Michael W. Thomas (michth) 24-Sep-1996
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Revision History:
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Keith Moore (keithmo) 07-Feb-1997
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Cleanup, comment, made Metadata errors "real" HRESULTs.
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--*/
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#ifndef _COMMSG_H_
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#define _COMMSG_H_
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//
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// RETURNCODETOHRESULT() maps a return code to an HRESULT. If the return
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// code is a Win32 error (identified by a zero high word) then it is mapped
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// using the standard HRESULT_FROM_WIN32() macro. Otherwise, the return
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// code is assumed to already be an HRESULT and is returned unchanged.
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//
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#define RETURNCODETOHRESULT(rc) \
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(((rc) < 0x10000) \
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? HRESULT_FROM_WIN32(rc) \
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: (rc))
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//
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// HRESULTTOWIN32() maps an HRESULT to a Win32 error. If the facility code
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// of the HRESULT is FACILITY_WIN32, then the code portion (i.e. the
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// original Win32 error) is returned. Otherwise, the original HRESULT is
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// returned unchagned.
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//
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#define HRESULTTOWIN32(hres) \
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((HRESULT_FACILITY(hres) == FACILITY_WIN32) \
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? HRESULT_CODE(hres) \
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: (hres))
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#endif // _COMMSG_H_
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