Question: I'm currently developing an application that uses private Windows messages to trigger (some) code execution (for programmers: defined as [WM\_USER](https://msdn.microsoft.com/en-us/library/windows/desktop/ms644931%28v=vs.85%29.aspx) + n).

I would like to track the order in which some of these are processed by the OS and handled in my app. I can not find sufficient facilities in my IDE to do so.

A free tool would be nice.

FWIW I Develop in Delphi XE2

Answer: 
[Some PDF to HTML Converter](http://www.somepdf.com/some-pdf-to-html-converter.html) is the only free, offline PDF to HTML converter I was able to find. Hope this works for you!
Have you tried `pdf2html` in Linux? Both free and Free, works off line, has been packaged by many distros for a long time. 

<https://linux.die.net/man/1/pdftohtml>