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