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CGOBJ_ISA

CGOBJ_ISA
  The purpose of this utility routine is to check to be sure the object argument is
  valid and belongs to the specified object class. It is more useful than the built-in
  Obj_Isa function, because it can handle undefined variable arguments.

Categories


    Utilities
   

Returns


    The function returns a 0 to indicate FALSE or a 1 to indicate TRUE. If passed
    an array of objects, it will return an array of 0s and 1s for each object.
   

Params


    object: in, optional, type=object
      The object reference to check. It may be undefined. This variable may
      also be an array.
    classname: in, optional, type=string
      The object class name. If undefined, the function always returns false.
       

Examples


    Here is how to use this program::
      IDL> IF cgObj_ISA(object, 'cgKML_Feature') THEN object -> SetProperty, PLACENAME='Boulder'
     

Author


    FANNING SOFTWARE CONSULTING::
      David W. Fanning
      1645 Sheely Drive
      Fort Collins, CO 80526 USA
      Phone: 970-221-0438
      E-mail: david@idlcoyote.com
      Coyote's Guide to IDL Programming: http://www.idlcoyote.com

History


    Change History::
        Written, 4 Novemeber 2012 by David W. Fanning.

Copyright


    Copyright (c) 2012, Fanning Software Consulting, Inc.



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