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Eclipse WindowBuilder [message #1095818]

Tue, 27 August 2013 15:20

Praveen Dharmaraj

Messages: 7
Registered: August 2013

Junior Member

Hello,
When I try to open a basic eclipse application using windowbuilder, I get an error on the design view-"This is not a GUI class and cant be edited graphically". Can anybody help me with this? I have attached the snapshot of the error.

Attachment: Capture.JPG
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Re: Eclipse WindowBuilder [message #1110203 is a reply to message #1095818]

Mon, 16 September 2013 14:33

Praveen Dharmaraj

Messages: 7
Registered: August 2013

Junior Member

Hello,
Can anyone please help me with this problem? I have been trying to get this sorted out but only in vain.

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Re: Eclipse WindowBuilder [message #1110684 is a reply to message #1110203]

Tue, 17 September 2013 07:23

Eric Clayberg

Messages: 979
Registered: July 2009
Location: Boston, MA

Senior Member

That error message pretty much means what it says... you are trying to edit a class that WB does not recognize as a UI class. That can be the result of a two things:

1) It really isn't a UI class (not descended from any known UI type or contain any known UI elements), or

2) It is using an unknown UI framework (possibly because you don't have the requisite WB support pieces installed). For example, to edit Swing classes, you need to have Swing Designer installed.

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Re: Eclipse WindowBuilder [message #1183106 is a reply to message #1110684]

Tue, 12 November 2013 16:43

Peter Andrews

Messages: 1
Registered: November 2013

Junior Member

Your mention of needing the SwingDesigner helped me. I was stumped why WindowBuilder gave me an error 'WindowBuilder Unknown GUI toolkit'. It had been weeks since I had moved from Juno to Kepler and I had been working on non-gui code so I didn't realize WindowBuilder was broken. After reading your post i installed Swing Designer and fixed the issue. Thanks!

(part of the reason I am writing this is so that Google will associate the particular error message with this solution)

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