OB Class
OB Class ( object : Object ) : Object
| Parameter | Type | Description | |
|---|---|---|---|
| object | Object | → | Object whose class is to be returned |
| Function result | Object | ← | Class of object (null if object does not exist) |
History
| Release | Changes |
|---|---|
| 18 R3 | Created |
Description
The OB Class command returns the class of the object passed in parameter. In 4D, all objects inherit from the Object class. If object is not an existing object, OB Class returns null.
Example
You created the Polygon class:
//Class: Polygon
Class constructor( $width : Integer ; $height : Integer)
This.area:=$width*$height
Then, in a method, you can write:
var $poly;$class : Object
$poly:=cs.Polygon.new(4;3)
$class:=OB Class($poly)
//$class contains Class: Polygon
See also
Properties
| Command number | 1730 |
| Thread safe | yes |