org.eclipse.swt.SWTError: No more handles

Resources:
http://www.eclipse.org/articles/swt-design-2/swt-design-2.html
http://stackoverflow.com/questions/2018553/swt-no-more-handles
http://i-proving.com/2006/06/05/diagnosing-handle-leaks-in-swtrcp-windows-applications/
http://www.sybase.com/detail?id=1019174
http://www.eclipse.org/articles/swt-design-2/sleak.htm

What is User handle ?
http://msdn.microsoft.com/en-us/library/windows/desktop/ms725486(v=vs.85).aspx

Tools for identifying handles:
Process explorer to check the handles:
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

http://ltearno.free.fr/dpus/

Using Sleak identify memory leaks
http://eclipsesource.com/blogs/2009/04/17/finding-swt-leaks-with-sleak/