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 Photoshop CS3 Scripting Basics     14

The Photoshop CS3 object model includes additional objects beyond the ones described in the 
containment hierarchy above. Most of these classes are used as types for properties or to provide 
information (as arguments) for commands or methods. For example:

●

The 

color value (SolidColor/SolidColor)

 class provides the type for the 

background color 

(backgroundColor/backgroundColor)

 and 

foreground color 

(ForegroundColor/foregroundColor)

 properties of the 

Application

 object. See 

●

Open and save options for documents are defined as classes, and these are passed to the commands 
that open and save documents; e.g., the 

BMP save

 

options

 (

BMPSaveOptions/BMPSaveOptions) 

class can be passed as an argument to the 

save

 (

saveAs

/

saveAs

) command or method. See 

.

An additional important component of the Photoshop CS3 object model for JavaScript and VBScript are 
constants. Constants are a type of value that defines a property. For example, with the 

kind

 property of an 

Art Layer

 object, you can define only specific kinds that Photoshop CS3 allows. For general information 

about constants, see Introduction to Scripting.

Throughout this document, actual values of enumerations for VBScript are given using the 
following format:

newLayerRef.Kind = 2 '2 indicates psLayerKind --> 2 (psTextLayer)

The ' before the explanation creates a comment and prevents the text to the right of the ' from being 
read by the scripting engine. For more information about using comments, see Introduction to 
Scripting.

For example, look up the art 

ArtLayer

 object in either the Adobe Photoshop CS3 JavaScript Scripting 

Reference or in the Adobe Photoshop CS3 Visual Basic Scripting Reference. One of the properties of this 
object is 

Kind( kind

). The value type for that property contains a link to the constant that define the 

allowed values for the property. For VBScript, the constant is 

PSLayerKind

, for JavaScript, the constant is 

LayerKind

. Click the link to view the values you can use to define the 

kind

 property. 

Different objects can use the same property name with different constant values. The constant 
values for the 

Channel

 object’s 

kind

 property are different than the constant values for the 

Art 

Layer

 object’s 

kind

 property. 

Color Sampler

Represents a color sampler in your document.

Choose the Color Sampler 
Tool, and click in the 
document.

Count Item

Represents a counted item in the document.

Choose the Count Tool and 
click in the document.

Measurement 
Scale

Represents the measurement scale for your 
document.

The Measurement Scale object 
cannot be created, but you can 
change its properties by using 
Image > Measurement Scale 
> Custom.