class hierarchy
===============

GtkObject 

  Model

    Heapmodel

      Rhs
      Subcolumn
      Text
      Row

      Classmodel

        Slider
        Patch
        Filename
        Option
        Toggle
        Iimage

          Iregion

        Iregiongroup
        Iarrow
	Matrix

    Filemodel

      Column
      Symbol

        Workspace
        Workspacegroup

      Tool
      Toolkit

    Conversion

    Toolkitgroup

  Compile

  Watch

GtkVBox

  View

    Textview
    Workspacegroupview
    Workspaceview
    Toolkitgroupview
    Toolkitview
    Toolview
    Toggleview
    Sliderview
    Patchview
    Filenameview
    Rhsview
    Rowview
    Subcolumnview
    Spin
    Optionview
    Columnview
    Iarrowview
    Matrixview
    Regionview
    Iimageview

      Iregionview

    Iregiongroupview

  Imagepresent
  
GtkFrame

  Conversionview
  Statusview

GtkDrawingArea

  Imagedisplay

GtkWindow

  iWindow

    Imageview
    Program
    Trace

    iDialog

      Namecaption
      Find
      Imageheader
      Browse

      GtkFileSelection2

          Filesel

