Google Sketchup C++ SDK: SkpWriter usage

I am trying to use Google's Sketchup C++ SDK (latest versi开发者_StackOverflowon) to export a 3D model to a Sketchup file. One of the problems I am facing is that the header files refer to an "sapi" folder which does not exist in the source tree.

I need to figure out how I can get a reference to the ISketchUpApplication interface. Can someone provide me with example code on how I can go about doing this?

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The latest SDK comes with an example showing how the writer is used. The example can be found at "SkpWriter/Examples/skpwriter_example/skpwriter_example" within the Windows SDK download bundle.