Calling a Java Method from a native call back function

I have a call back function in my C++ project. This function should fire a Java event to notify something. I can save a global reference to the object which must receive the notification, but I have no "thread environment" to call the notification method. How can I get a valid "thread environment" to call this method? Should I create a new Java thread?

Thaks in advance.

[400 byte] By [jlrando] at [2007-9-26 16:28:50]