System.Object
   ImageGear.ART.Forms.ImGearARTForms
   ImageGear.ART.Forms.ImGearARTFormsCreateMarkData
   ImageGear.ART.Forms.ImGearARTFormsMarkController
      ImageGear.ART.Forms.ImGearARTFormsPolyController
      ImageGear.ART.Forms.ImGearARTFormsRectangleController
   ImageGear.ART.Forms.ImGearARTFormsMarkControllerData
   ImageGear.ART.Forms.ImGearARTFormsPreviewData
   ImageGear.ART.Forms.ImGearARTFormsToolbarButtonInfo
   ImageGear.ART.Forms.ImGearARTMarkTemplates
   System.EventArgs
      ImageGear.ART.Forms.ImGearARTFormsMarkCreatedEventArgs
      ImageGear.ART.Forms.ImGearARTFormsMarkCreatingEventArgs
      ImageGear.ART.Forms.ImGearARTFormsMouseEventArgs
   System.Windows.Forms.Form
      System.Windows.Forms.ContainerControl
         System.Windows.Forms.ScrollableControl
            System.Windows.Forms.Control
               System.ComponentModel.Component
                  System.MarshalByRefObject
                     ImageGear.ART.Forms.ImGearART3DToolBar
                     ImageGear.ART.Forms.ImGearARTPropertyDialog
                     ImageGear.ART.Forms.ImGearARTRTFToolBar
                     ImageGear.ART.Forms.ImGearARTToolBar
                     ImageGear.ART.Forms.InputBox

Reference

ImageGear21.Art.Forms Assembly