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Translating numbers into human readable mneonic strings ie. errlookup.exe

Posted on 2000-03-24
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Last Modified: 2013-12-28
errlookup.exe when given an error code returns a description.  Is there
any interface/DLL in NT which when given an error code returns a
short corresponding NT name for the error, and a longer description.
It seems unbelievable that errlookup.exe would exist, but a program
could not utilize its functionality.

Partial answer.. for OLE/DB use the extended error capabilities.. log the
error, and then immediately read back the answer.. but this doesn't
presumably cover all error codes, and gives no short name eg. E_FAIL
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Question by:ijdavis
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3 Comments
 
LVL 12

Accepted Solution

by:
pjknibbs earned 100 total points
ID: 2656618
You can use the API function FormatMessage() to translate Win32 error codes to strings as follows:

LPVOID lpMsgBuf;
FormatMessage(
    FORMAT_MESSAGE_ALLOCATE_BUFFER |
    FORMAT_MESSAGE_FROM_SYSTEM |
    FORMAT_MESSAGE_IGNORE_INSERTS,
    NULL,
    GetLastError(),
    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
    (LPTSTR) &lpMsgBuf,
    0,
    NULL
);
// Process any inserts in lpMsgBuf.
// ...
// Display the string.
MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION );
// Free the buffer.
LocalFree( lpMsgBuf );

Hope that helps!
0
 

Author Comment

by:ijdavis
ID: 2656954
Thanks for the response..

The problem is that: FormatMessage(E_FAIL)

Returns "Unspecified Error" but not
"E_FAIL"...

FormatMessage(DB_SEC_E_AUTH_FAILED)
which is an OLE/DB error code
returns nothing..

But you pointed me in the right direction and I worked out what the error module is for OLE/DB.  It is not well documented but it is:

\program files\common files\system\
ole db\msdaerr.dll
0
 

Author Comment

by:ijdavis
ID: 2657615
If anyone wishes to discuss this
issue further please email me at:
ijdavis@solo.uwaterloo.ca
0

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