#include <db_cxx.h> int DbMpoolFile::get_ftype(int *ftypep);
            The DbMpoolFile::get_ftype() method returns the file type. The file
            type is used for the purposes of file processing, and will be the same as is set using
            the DbEnv::memp_register() method. 
    
         The DbMpoolFile::get_ftype() method may be called at any time during
         the life of the application.
    
         The DbMpoolFile::get_ftype() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.