DeviceResourceDescriptor (Eclipse Platform API Specification)

java.lang.Object
- org.eclipse.jface.resource.DeviceResourceDescriptor

Direct Known Subclasses:

ColorDescriptor, FontDescriptor, ImageDescriptor
```
public abstract class DeviceResourceDescriptor
extends Object
```
Instances of this class can allocate and dispose SWT resources. Each instance describes a particular resource (such as a Color, Font, or Image) and can create and destroy that resource on demand. DeviceResourceDescriptors are managed by a ResourceRegistry.
Note: It is recommended that subclasses implement #equals and #hashCode, so that clients, like decoration managers, can recognize when they have two equal descriptors at hand, e.g. decorating an identical object.

Since:

3.1

See Also:

ResourceManager

Constructor Summary

Constructors
Constructor Description

DeviceResourceDescriptor()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract Object`	`createResource(Device device)`	Creates the resource described by this descriptor
`abstract void`	`destroyResource(Object previouslyCreatedObject)`	Undoes everything that was done by a previous call to create(...), given the object that was returned by create(...).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DeviceResourceDescriptor
```
public DeviceResourceDescriptor()
```
- Method Detail
  - createResource
```
public abstract Object createResource(Device device)
```
    Creates the resource described by this descriptor
    
    Parameters:
    
    device - the Device on which to allocate the resource
    
    Returns:
    
    the newly allocated resource (not null)
    
    Throws:
    
    DeviceResourceException - if unable to allocate the resource
    
    Since:
    
    3.1
  - destroyResource
```
public abstract void destroyResource(Object previouslyCreatedObject)
```
    Undoes everything that was done by a previous call to create(...), given the object that was returned by create(...).
    
    Parameters:
    
    previouslyCreatedObject - an object that was returned by an equal descriptor in a previous call to createResource(...).
    
    Since:
    
    3.1