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    <p>I'm assuming you want to write custom data, not just the lines executed (which is sadly all you get from PBDEBUG; I've always wanted a custom data write to a PBDEBUG trace, but I've never been able to convince anyone at Sybase to add this to the product). </p> <p><strong>PFC</strong></p> <p>PFC offers a Debug service that does this, but if you haven't built your app with PFC already, it may require a moderate effort to adapt it to your infrastructure. If you've got a PFC-based app, all you have to do is </p> <pre><code>of_SetDebug (TRUE) </code></pre> <p>in the pfc_Open event of the Application Manager (or some other appropriate place), then start peppering your code with </p> <pre><code>IF IsValid (gnv_App.inv_Debug) THEN gnv_App.inv_Debug.of_Message (...) </code></pre> <p>This way, you can just remove the of_SetDebug() to turn off the messaging, without having to remove all the messages' code. (OK, in theory this will slow down your app a little, checking to see if IsValid () all the time.) I even put in code so that I can turn on the Debug Service with a command line option (that I don't tell the users about). That way, I can do this style of troubleshooting at the end-users' workstations (assuming I've anticipated the data I need to write).</p> <p><strong>Other</strong></p> <p>If I'm stuck with a non-PFC app, I'm afraid I'm usually too rushed (read: too lazy) to adapt the PFC debug service, so I just create a global function that does a FileOpen, FileWrite and FileClose on a hard-coded file name, writing the message passed in as a parameter. Then I load my code with calls to this function. In theory you could make this an empty function when it's time to deploy, but I have usually removed all the calls instead.</p>
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