Converting Other AutoLISP Data Types for ActiveX Methods

AutoLISP Developer's Guide > Using the Visual LISP Environment > Working with ActiveX > Using Visual LISP Functions with ActiveX Methods > Converting AutoLISP Data Types to ActiveX Data Types >

The Radius argument to the AddCircle method requires a Double, but the ActiveX functions make the necessary conversion if you specify a real in AutoLISP. The following table identifies the AutoLISP data type that ActiveX functions will accept in place of the required ActiveX data type. Each row in the table represents a data type used by ActiveX functions. Each column in the table represents an AutoLISP data type. Wherever the intersecting cells contain a plus (+) symbol, you can specify the corresponding AutoLISP data type for the required ActiveX data type.

AutoLISP data types accepted in place of an ActiveX data type
	Integer	Real	String	VLA-object	Variant	Safe-array	:vlax-true :vlax-false
Byte	+
Boolean							+
Integer	+
Long	+
Single	+	+
Double	+	+
Object				+
String			+
Variant					+
Array						+

In some instances an AutoLISP ActiveX function will accept and convert a data type that is not indicated as acceptable by the preceding table, but you should never count on this.