Article # 260, added by Geoworks, historical record
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I get the "Undefined structure '_ClassStruct'" warning.



Q. When I compile I get the following warning:

     Warning file.c 163: Undefined structure '_ClassStruct'

   Is this a serious warning?

A. No. It is a fluke caused by one of the header files. If you
   include the geos.h header file without including object.h,
   you'll get this warning. You can ignore it as long as you
   don't use "ClassStruct" in your code.