Converting API return values to Return Codes?

[Lars Netzel]

I need to use a few WIN API functions and get Return values as Long and
Integers from those.. how do I convert these to the error codes so I get to
know what error I really got?

Example from MSDN site:
http://msdn.microsoft.com/library/de...ternetdial.asp
Return Values
Returns ERROR_SUCCESS if successful, or an error value otherwise. The error
code can be one of the following values.
ERROR_INVALID_P ARAMETER, One or more of the parameters are incorrect.
ERROR_NO_CONNEC TION, There is a problem with the dial-up connection.
ERROR_USER_DISC ONNECTION, The user clicked either the Work Offline or
Cancel button on the Internet connection dialog box.

I get numbers as 797, 631 and 0 from this api. I have understood , from
trial and error, that 0 is success.. but how to I translate the other ones
to the real message?

best regards
/Lars Nezel

[Herfried K. Wagner [MVP]]

"Lars Netzel" <ui****@adf.s e> schrieb im Newsbeitrag:

I need to use a few WIN API functions and get Return values as Long and
Integers from those.. how do I convert these to the error codes so I get to
know what error I really got?

Example from MSDN site:
http://msdn.microsoft.com/library/de...ternetdial.asp
Return Values
Returns ERROR_SUCCESS if successful, or an error value otherwise. The
error code can be one of the following values.
ERROR_INVALID_P ARAMETER, One or more of the parameters are
incorrect.
ERROR_NO_CONNEC TION, There is a problem with the dial-up connection.
ERROR_USER_DISC ONNECTION, The user clicked either the Work Offline or
Cancel button on the Internet connection dialog box.

See:

<URL:http://groups.google.d e/group/microsoft.publi c.dotnet.langua ges.vb/msg/a8e93b25e4feb27 b>

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M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
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