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From "Stadelmann Josef" <josef.stadelm...@axa-winterthur.ch>
Subject AW: org.apache.log4j.nt.NTEventLogAppender.registerEventSource
Date Wed, 25 Jul 2012 09:09:44 GMT
Ricardo,

that is what the sources of 

package org.apache.log4j.nt;

import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.Layout;
import org.apache.log4j.TTCCLayout;
import org.apache.log4j.helpers.LogLog;
import org.apache.log4j.spi.LoggingEvent;

/**
   Append to the NT event log system.

   <p><b>WARNING</b> This appender can only be installed and used on a
   Windows system.

   <p>Do not forget to place NTEventLogAppender.dll,
   NTEventLogAppender.amd64.dll, NTEventLogAppender.ia64.dll
   or NTEventLogAppender.x86.dll as appropriate in a
   directory that is on the PATH of the Windows system. Otherwise, you
   will get a java.lang.UnsatisfiedLinkError.

   @author <a href="mailto:cstaylor@pacbell.net">Chris Taylor</a>
   @author <a href="mailto:jim_cakalic@na.biomerieux.com">Jim Cakalic</a> */

so which dll do you potentially need? 
I think that depends on your Windows System and I think you need NTEventLogAppender.x86.dll
for any system with a CLR such as XP, Vista or Windows 7/8

Josef

-----Urspr√ľngliche Nachricht-----
Von: Ricardo Cardoso [mailto:rfonsecacardoso@gmail.com] 
Gesendet: Freitag, 13. Juli 2012 15:34
An: log4j-user@logging.apache.org
Betreff: org.apache.log4j.nt.NTEventLogAppender.registerEventSource

Hi my name is Ricardo and I am trying to learn how to use log4j.

I am now trying to learn how to use NTEventLogAppender but without success.

I already put the NTEventLogAppender.dll in windows/system32 folder but
when I run the example code of this dll I get this exception:

Exception in thread "main" java.lang.UnsatisfiedLinkError:
org.apache.log4j.nt.NTEventLogAppender.registerEventSource(Ljava/lang/St
ring;Ljava/lang/String;)I

                at
org.apache.log4j.nt.NTEventLogAppender.registerEventSource(Native
Method)

                at
org.apache.log4j.nt.NTEventLogAppender.<init>(NTEventLogAppender.java:79
)

                at
org.apache.log4j.nt.NTEventLogAppender.<init>(NTEventLogAppender.java:53
)

                at com.log.eventlog.Teste.main(Teste.java:15)

My java code is the following:

                    BasicConfigurator.configure(new
NTEventLogAppender("ola"));

                    Logger logger =3D
Logger.getLogger("org.apache.log4j.nt.NTEventLogAppenderTest");

                    int i  =3D 0;

                    logger.debug( "Message " + i++);

                    logger.info( "Message " + i++);

                    logger.warn( "Message " + i++);

                    logger.error( "Message " + i++);

                    logger.log(Level.FATAL, "Message " + i++);

                    logger.debug("Message " + i++,  new Exception("Just
testing."));

I know that this can be a silly error but in the internet I only get pages
that show me the  NTEventLogAppender class.

Can anyone help me?

Best Regards

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