Write to Windows event log: Difference between revisions

=={{header|C}}

The following is a wrapper on the EventCreate utility provided in Windows. Note that to use this wrapper, the code must be executed from a console/IDE running as Administrator. The utility itself does extensive error-checking and validation, so apart from the check that 5 arguments have been supplied, no other validations or checks are performed.

<lang C>

/*Abhishek Ghosh, 6th October 2017*/

#include<stdlib.h>

#include<stdio.h>

int main(int argC,char* argV[])

{

char str[1000];

if(argC!=5)

printf("Usage : %s < Followed by level, id, source string and description>",argV[0]);

else{

sprintf(str,"EventCreate /t %s /id %s /l APPLICATION /so %s /d \"%s\"",argV[1],argV[2],argV[3],argV[4]);

system(str);

}

return 0;

}

</lang>

Invocation and output on console :

<pre>

C:\rosettaCode>eventLog.exe WARNING 458 SOmeString "This is a joke"

SUCCESS: An event of type 'WARNING' was created in the 'APPLICATION' log with 'SOmeString' as the source.

</pre>

Microsoft does provide an C/C++ API for EventCreate, but as with everything Microsoft, it's so wonderfully convoluted, that I will just give a link to the [https://msdn.microsoft.com/en-us/library/aa363680(v=vs.85).aspx ReportEvent] example.