FYI -- As part of my revision to the OSG Quick Start Guide (in progress), I've modified the current svn head of the example code to use ref_ptr<>::release(). This technique will be discussed in the upcoming revision but is not mentioned in the current edition of the book. So I thought I should discuss it briefly here. ref_ptr<>::release() tells the ref_ptr<> variable to stop managing the memory that it points to. It will decrement the reference count on the memory but will not delete the memory, not even if its reference count goes to zero. This makes release() well-suited for returning the address of Reference memory from functions that allocate that memory. The function can use a ref_ptr<> locally to store the address of the allocated memory, return it with release(), and as long as the calling code store the returned address in another ref_ptr<>, no memory is deleted and no memory leaks. The source code can be downloaded from: http://code.google.com/p/osgqsg/admin The current edition of the book can be ordered from www.lulu.com. Just search for "OpenSceneGraph". Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com <http://www.skew-matrix.com/> +1 303 859 9466
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