[jboss-user] [JBoss Seam] - SWTException: Invalid thread access

[hispeedsurfer]

Hello,
I have try to use Eclipse SWT with a Seam-Application.
But sometimes, not every time, I receive an exception caused by:

SWTException: Invalid thread access 

Here the class use SWT:

  | package org.jboss.util;
  | 
  | import org.eclipse.swt.SWT;
  | import org.eclipse.swt.ole.win32.OleAutomation;
  | import org.eclipse.swt.ole.win32.OleClientSite;
  | import org.eclipse.swt.ole.win32.OleFrame;
  | import org.eclipse.swt.ole.win32.Variant;
  | import org.eclipse.swt.widgets.Display;
  | import org.eclipse.swt.widgets.Shell;
  | 
  | public class OLEaccess {
  | 	
  | 	private static Display display = new Display();
  | 	public OLEaccess(){
  | 	}
  | 	public static int OUTLOOK_MAIL_ITEM = 0;
  | 
  | 	
  | 
  | 	private Shell shell = new Shell(display);
  | 
  | 	private OleFrame frm = new OleFrame(shell, SWT.NONE);
  | 
  | 	private OleClientSite site = new OleClientSite(frm, SWT.NONE, "Outlook.Application");
  | 
  | 	private OleAutomation auto = new OleAutomation(site);
  | 	
  | 	private int[] GetNamespaceDispId = auto
  | 	.getIDsOfNames(new String[] { "GetNamespace" });
  | 
  | 	private Variant Namespace = auto.invoke(GetNamespaceDispId[0],
  | 		new Variant[] { new Variant("MAPI") });
  | 	
  | 	private OleAutomation NamespaceAutomation = Namespace.getAutomation();
  | 	
  | 	private OleAutomation mailItemAutomation;
  | 	
  | 
  | 	public String send(String to, String subject, String bodyTxt) {
  | 		int[] LogonDispId = NamespaceAutomation
  | 		.getIDsOfNames(new String[] { "Logon" });
  | 	
  | 		int[] LogoffDispId = NamespaceAutomation
  | 			.getIDsOfNames(new String[] { "Logoff" });
  | 		
  | 		NamespaceAutomation.invoke(LogonDispId[0], new Variant[] {
  | 			new Variant("YOUR MAIL ACCOUNT"), new Variant("YOUR PASSWORD"),
  | 			new Variant(true), new Variant(true) });
  | 		
  | 		int[] CreateItemDispId = auto
  | 			.getIDsOfNames(new String[] { "CreateItem" });
  | 		
  | 		Variant mailItem = auto.invoke(CreateItemDispId[0],
  | 			new Variant[] { new Variant(OUTLOOK_MAIL_ITEM) });
  | 		
  | 		mailItemAutomation = mailItem.getAutomation();
  | 
  | 		int[] ToPropertyDispId = mailItemAutomation
  | 				.getIDsOfNames(new String[] { "To" });
  | 
  | 		mailItemAutomation.setProperty(ToPropertyDispId[0], new Variant(
  | 				"YOUR " +to));
  | 
  | 		int[] SubjectPropertyDispId = mailItemAutomation
  | 				.getIDsOfNames(new String[] { "Subject" });
  | 
  | 		mailItemAutomation
  | 				.setProperty(SubjectPropertyDispId[0], new Variant(
  | 						subject +" "
  | 								+ System.currentTimeMillis()));
  | 
  | 		int[] BodyPropertyDispId = mailItemAutomation
  | 				.getIDsOfNames(new String[] { "Body" });
  | 
  | 		mailItemAutomation.setProperty(BodyPropertyDispId[0], new Variant(
  | 				bodyTxt));
  | 
  | 		int[] SendDispId = mailItemAutomation
  | 				.getIDsOfNames(new String[] { "Send" });
  | 
  | 		mailItemAutomation.invoke(SendDispId[0]);
  | 
  | 		NamespaceAutomation.invoke(LogoffDispId[0]);
  | 
  | 		
  | 		return "send";
  | 	}
  | 	
  | 	public boolean dispose(){
  | 		boolean rs = true;
  | 		shell.dispose();
  | 
  | 		auto.dispose();
  | 
  | 		NamespaceAutomation.dispose();
  | 
  | 		mailItemAutomation.dispose();
  | 
  | 		site.deactivateInPlaceClient();
  | 		site.dispose();
  | 
  | 		frm.dispose();
  | 		return rs;
  | 	}
  | }
  | 

and the EJB

  | package org.jboss.business;
  | 
  | import java.io.Serializable;
  | 
  | import javax.ejb.Remove;
  | import javax.ejb.Stateful;
  | import javax.ejb.Stateless;
  | 
  | import org.jboss.seam.annotations.Name;
  | import org.jboss.seam.annotations.Scope;
  | import org.jboss.seam.annotations.Destroy;
  | import org.jboss.seam.ScopeType;
  | import org.jboss.util.OLEaccess;
  | 
  | @Stateful
  | @Name("outlookAccess")
  | @Scope(ScopeType.SESSION)
  | public class OutlookAccessAction implements OutlookAccess, Serializable {
  | 	
  | 	private OLEaccess ole = new OLEaccess();
  | 
  | 	public String doAction()
  | 	{
  | 		ole.send("test at test.de", "Invoke SWT fom J2EE Webapp", "was langw wärt wird endlich gut");
  | 		//ole.dispose();
  | 		System.out.println("Action Called");
  | 		return "success";
  | 	}
  | 	
  | 	@Destroy @Remove                                                                      
  | 	public void destroy() {
  | 		ole.dispose();
  | 	}	
  | }
  | 
  | 

All swt dependencies are added to project.

Any idea?

Thanks
Andreas

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