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copied!<p><em>A bonified answer, albeit one that requires a largish library dependency (well-worth it IMO)!</em></p> <p>QT provides the <a href="http://doc.trolltech.com/4.4/qfilesystemwatcher.html" rel="nofollow noreferrer">QFileSystemwatcher</a> class, which uses the native mechanism of the underlying platform. </p> <p>Even better, you can use the QT language bindings for Python or Ruby. <a href="http://www.rkblog.rk.edu.pl/w/p/pyqt4-text-editor-final-changes/" rel="nofollow noreferrer">Here</a> is a simple PyQT4 application which uses <a href="http://doc.trolltech.com/4.4/qfilesystemwatcher.html" rel="nofollow noreferrer">QFileSystemWatcher</a>. </p> <p><strong>Notes</strong></p> <ul> <li>A good reference on on <a href="http://aralbalkan.com/1675" rel="nofollow noreferrer">creating deployable PyQT4 apps</a>, especially on OSX but should work for Windows also.</li> <li>Same solution previously posted <a href="https://stackoverflow.com/questions/61253/how-to-be-notified-of-file-directory-change-in-c-c-ideally-using-posix/61300#61300">here</a>. </li> <li>Other cross-platform toolkits may also do the trick (for example <a href="http://www.gnome.org/" rel="nofollow noreferrer">Gnome</a>'s <a href="http://library.gnome.org/devel/gio/unstable/" rel="nofollow noreferrer">GIO</a> has <a href="http://library.gnome.org/devel/gio/unstable/GFileMonitor.html" rel="nofollow noreferrer">GFileMonitor</a>, although it is UNIX only and doesn't support OSX's <a href="http://en.wikipedia.org/wiki/FSEvents" rel="nofollow noreferrer">FSEvents</a> mechanism afaik).</li> </ul>

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