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SWT run issue -XstartOnFirstThread argument [message #1747129]

Wed, 09 November 2016 19:32

Francesco Falanga

Messages: 1
Registered: November 2016

Junior Member

Hi everybody, I'm using eclipse to develop a java application on Mac.
My project include a SWT GUI so I have included the library, when I run the GUI on windows everything is okay, when I run it on mac I get this error:

***WARNING: Display must be created on main thread due to Cocoa restrictions.
Exception in thread "main" org.eclipse.swt.SWTException: Invalid thread access
	at org.eclipse.swt.SWT.error(Unknown Source)
	at org.eclipse.swt.SWT.error(Unknown Source)
	at org.eclipse.swt.SWT.error(Unknown Source)
	at org.eclipse.swt.widgets.Display.error(Unknown Source)
	at org.eclipse.swt.widgets.Display.createDisplay(Unknown Source)
	at org.eclipse.swt.widgets.Display.create(Unknown Source)
	at org.eclipse.swt.graphics.Device.<init>(Unknown Source)
	at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
	at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
	at org.eclipse.swt.widgets.Display.getDefault(Unknown Source)
	at Test.createContents(Test.java:29)
	at Test.main(Test.java:19)

I have ticked use -XstartOnFirstThread when launching with SWT but seems as if eclipse doesn't recognize I'm launching the app with SWT, infact if I put this parameter in VM arguments the app works fine.
How can I solve without putting this argument there?
Thank you

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