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Standard Widget Toolkit (SWT) is the UI toolkit used by 
the Eclipse Platform and most other Eclipse projects.  Its stated goal,
according to the SWT home page, is to provide &#147;efficient, portable
access to the user-interface features of the operating systems on which
it is implemented.&#148;  Its goal is not to provide a rich user-interface
design framework but rather the thinnest possible user-interface API
that can be implemented uniformly on the largest possible set of platforms
while still providing sufficient functionality to build rich  
graphical user interface (GUI) applications.



SWT is implemented by creating thin native wrappers for the underlying 
operating system&#146;s user-interface APIs. The bulk of SWT&#146;s source is Java code,
which defers as much work as possible to the appropriate operating system native.
Thus, when you create a tree widget in SWT, it calls through to the 
operating system to create a native tree widget.  The result is that 
SWT applications tend to look and behave exactly like native 
applications on the system they are running on.  No Java 
emulation is done at all, except if no native API will satisfy the needs 
of the SWT API. Thus, if a platform does not provide a
tree widget, SWT will implement an emulated tree widget in Java.



SWT does not make use of AWT or any other Java tool kit to 
implement its functionality. SWT also makes minimal use of Java 
class libraries, thus allowing it to be run with older JDKs
or restricted class libraries on handheld computers.  
Implementations of SWT are currently available on the following platforms:


* Win32
* Linux Motif and GTK
* AIX Motif
* HPUX Motif
* MacOS Carbon and Cocoa
* Photon
* Pocket PC
<hr><font size=-2>This FAQ was originally published in [http://www.eclipsefaq.org Official Eclipse 3.0 FAQs]. Copyright 2004, Pearson Education, Inc. All rights reserved. This text is made available here under the terms of the [http://www.eclipse.org/legal/epl-v10.html Eclipse Public License v1.0].</font>

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