func init
	// checks installation Adobe Photoshop and adds references
	include("AdobePhotoshop")

	// initialize instance
	sys.add_object(this.codename, 'ps.PDFOpenOptions')

	// initialize properties
	sys.set_typed_field(104, 'AntiAlias')
	sys.set_typed_field(14, 'BitsPerChannel', '', 'ps.PsBitsPerChannelType')
	sys.set_typed_field(14, 'CropPage', '', 'ps.PsCropToType')
	sys.set_typed_field(1, 'Height')
	sys.set_typed_field(14, 'Mode', '', 'ps.PsOpenDocumentMode')
	sys.set_typed_field(1, 'Page')
	sys.set_typed_field(7, 'Resolution')
	sys.set_typed_field(104, 'SuppressWarnings')
	sys.set_typed_field(104, 'UsePageNumber')
	sys.set_typed_field(1, 'Width')

	// make methods for properties
	sys._prop_init('AntiAlias', 0, 1, 104)
	sys._prop_init('BitsPerChannel', 0, 1, 0)
	sys._prop_init('CropPage', 0, 1, 0)
	sys._prop_init('Height', 0, 1, 1)
	sys._prop_init('Mode', 0, 1, 0)
	sys._prop_init('Page', 0, 1, 1)
	sys._prop_init('Resolution', 0, 1, 7)
	sys._prop_init('SuppressWarnings', 0, 1, 104)
	sys._prop_init('UsePageNumber', 0, 1, 104)
	sys._prop_init('Width', 0, 1, 1)
end

func OpenOptions
	return(this.codename)
end