Still can't upgrade to newer releases

[doubtintom]

I'm still having trouble upgrading from 2.0 to newer releases. I'm working along reasonable well in the original 2.0 release. I just tried the 2.0.1 release, and get the exact behavior I've run into with every release since 2.0, namely the "Unknown Window Type" Designer window 100% of the time.

I installed 2.0.1, start up Eclipse, and immediately open a small GWT composite, then click Design tab. Up comes Unknown Window Type.

I'm running Kubuntu Feisty with 32 bit Java, 32 bit Eclipse 3.3, and it has been working quite well in general with Designer. You may remember that I found that all features began working under KDE since 2.0, a clear improvement.

I'm puzzled as to why 2.0 works for the most part, but subsequent releases don't. Earlier you had mentioned a possible configuration difference, but I haven't changed any configurations since . Any hints, ideas? Does the stack trace suggest anything?

I would like to upgrade, as 2.0 does have a few problems. After working for awhile, 2.0 can start having "Unknown Window Type" problems, and sometimes go into a loop somewhere and require a kill/restart of Eclipse. These usually happen after a couple of hours of intensive work with Designer.

Thanks!

!SESSION 2007-08-03 10:59:37.026 -----------------------------------------------
eclipse.buildId=I20070625-1500
java.version=1.5.0_11
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86

!ENTRY com.swtdesigner 4 4 2007-08-03 10:59:53.641
!MESSAGE Designer internal error [6.4.1.20070803065409]: org.apache.commons.lang.exception.NestableError: org.eclipse.swt.SWTError: XPCOM error -2147221164
!STACK 0
org.apache.commons.lang.exception.NestableError: org.apache.commons.lang.exception.NestableError: org.eclipse.swt.SWTError: XPCOM error -2147221164
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:360)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.classByName(UIObjectInfo.java:150)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.<init>(UIObjectInfo.java:62)
at com.swtdesigner.gwt.model.widgets.WidgetInfo.<init>(WidgetInfo.java:49)
at com.swtdesigner.gwt.model.widgets.panel.AbstractContainerInfo.<init>(AbstractContainerInfo.java:35)
at com.swtdesigner.gwt.model.widgets.panel.ThisCompositeInfo.<init>(ThisCompositeInfo.java:45)
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:203)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.visit(JavaInfoParser.java:2695)
at org.eclipse.jdt.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:466)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2546)
at org.eclipse.jdt.core.dom.CompilationUnit.accept0(CompilationUnit.java:213)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at com.swtdesigner.model.parser.JavaInfoParser.parse(JavaInfoParser.java:317)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1136)
at com.swtdesigner.gef.DesignerEditor$17.execute(DesignerEditor.java:1068)
at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:54)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1062)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1055)
at com.swtdesigner.editors.MultiPageEditor.showDesignEditor(MultiPageEditor.java:421)
at com.swtdesigner.editors.MultiPageEditor$2.widgetSelected(MultiPageEditor.java:191)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1125)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1110)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:951)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3227)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2005)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:316)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
Caused by: org.apache.commons.lang.exception.NestableError: org.eclipse.swt.SWTError: XPCOM error -2147221164
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:138)
at com.swtdesigner.gwt.support.browser.moz.GWTStateMoz.<init>(GWTStateMoz.java:27)
at com.swtdesigner.gwt.support.browser.moz.BrowserSupportFactory.createState(BrowserSupportFactory.java:12)
at com.swtdesigner.gwt.model.widgets.support.GWTState.createState(GWTState.java:1442)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:358)
... 53 more
Caused by: org.eclipse.swt.SWTError: XPCOM error -2147221164
at org.eclipse.swt.browser.Mozilla.error(Mozilla.java:1296)
at org.eclipse.swt.browser.Mozilla.create(Mozilla.java:398)
at org.eclipse.swt.browser.Browser.<init>(Browser.java:109)
at com.instantiations.designer.gwt.moz.BrowserShell.<init>(BrowserShell.java:58)
at com.swtdesigner.gwt.support.browser.moz.GWTStateMoz.createBrowserShell(GWTStateMoz.java:46)
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:122)
... 57 more

!ENTRY com.swtdesigner 4 4 2007-08-03 10:59:53.713
!MESSAGE Designer internal error [6.4.1.20070803065409]: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
!STACK 0
org.apache.commons.lang.exception.NestableError: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:118)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:95)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:88)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.endVisit(JavaInfoParser.java:1442)
at org.eclipse.jdt.core.dom.ClassInstanceCreation.accept0(ClassInstanceCreation.java:336)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2523)
at org.eclipse.jdt.core.dom.Assignment.accept0(Assignment.java:311)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2523)
at org.eclipse.jdt.core.dom.ExpressionStatement.accept0(ExpressionStatement.java:143)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2546)
at org.eclipse.jdt.core.dom.Block.accept0(Block.java:135)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2523)
at org.eclipse.jdt.core.dom.MethodDeclaration.accept0(MethodDeclaration.java:501)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at com.swtdesigner.model.parser.JavaInfoParser$ParserVisitor.visit(JavaInfoParser.java:2927)
at org.eclipse.jdt.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:466)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2546)
at org.eclipse.jdt.core.dom.CompilationUnit.accept0(CompilationUnit.java:213)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2476)
at com.swtdesigner.model.parser.JavaInfoParser.parse(JavaInfoParser.java:317)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1136)
at com.swtdesigner.gef.DesignerEditor$17.execute(DesignerEditor.java:1068)
at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:54)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1062)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1055)
at com.swtdesigner.editors.MultiPageEditor.showDesignEditor(MultiPageEditor.java:421)
at com.swtdesigner.editors.MultiPageEditor$2.widgetSelected(MultiPageEditor.java:191)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1125)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1110)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:951)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3227)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2005)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:316)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
Caused by: com.swtdesigner.properties.PropertyException: java.lang.reflect.InvocationTargetException
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:159)
at com.swtdesigner.model.parser.factory.JavaInfoFactory.create(JavaInfoFactory.java:112)
... 64 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at com.swtdesigner.gwt.model.GWTJavaInfoFactory.create(GWTJavaInfoFactory.java:151)
... 65 more
Caused by: org.apache.commons.lang.exception.NestableError: org.apache.commons.lang.exception.NestableError: org.eclipse.swt.SWTError: XPCOM error -2147467259
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:360)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.classByName(UIObjectInfo.java:150)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.<init>(UIObjectInfo.java:62)
at com.swtdesigner.gwt.model.widgets.WidgetInfo.<init>(WidgetInfo.java:49)
at com.swtdesigner.gwt.model.widgets.panel.AbstractContainerInfo.<init>(AbstractContainerInfo.java:35)
at com.swtdesigner.gwt.model.widgets.panel.PanelInfo.<init>(PanelInfo.java:25)
at com.swtdesigner.gwt.model.widgets.panel.ComplexPanelInfo.<init>(ComplexPanelInfo.java:23)
at com.swtdesigner.gwt.model.widgets.panel.CellPanelInfo.<init>(CellPanelInfo.java:20)
at com.swtdesigner.gwt.model.widgets.panel.VerticalPanelInfo.<init>(VerticalPanelInfo.java:28)
... 70 more
Caused by: org.apache.commons.lang.exception.NestableError: org.eclipse.swt.SWTError: XPCOM error -2147467259
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:138)
at com.swtdesigner.gwt.support.browser.moz.GWTStateMoz.<init>(GWTStateMoz.java:27)
at com.swtdesigner.gwt.support.browser.moz.BrowserSupportFactory.createState(BrowserSupportFactory.java:12)
at com.swtdesigner.gwt.model.widgets.support.GWTState.createState(GWTState.java:1442)
at com.swtdesigner.gwt.model.widgets.UIObjectInfo.getState(UIObjectInfo.java:358)
... 78 more
Caused by: org.eclipse.swt.SWTError: XPCOM error -2147467259
at org.eclipse.swt.browser.Mozilla.error(Mozilla.java:1296)
at org.eclipse.swt.browser.Mozilla.create(Mozilla.java:266)
at org.eclipse.swt.browser.Browser.<init>(Browser.java:109)
at com.instantiations.designer.gwt.moz.BrowserShell.<init>(BrowserShell.java:58)
at com.swtdesigner.gwt.support.browser.moz.GWTStateMoz.createBrowserShell(GWTStateMoz.java:46)
at com.swtdesigner.gwt.model.widgets.support.GWTState.<init>(GWTState.java:122)
... 82 more

!ENTRY com.swtdesigner 4 4 2007-08-03 10:59:54.135
!MESSAGE Designer internal error [6.4.1.20070803065409]: XPCOM error -2147221164
!STACK 0
org.eclipse.swt.SWTError: XPCOM error -2147221164
at org.eclipse.swt.browser.Mozilla.error(Mozilla.java:1296)
at org.eclipse.swt.browser.Mozilla.create(Mozilla.java:866)
at org.eclipse.swt.browser.Browser.<init>(Browser.java:109)
at com.swtdesigner.gef.actions.error.DesignerExceptionDialog.createDialogArea(DesignerExceptionDialog.java:53)
at org.eclipse.jface.dialogs.TitleAreaDialog.createContents(TitleAreaDialog.java:147)
at com.swtdesigner.gef.actions.error.DesignerExceptionDialog.createContents(DesignerExceptionDialog.java:37)
at org.eclipse.jface.window.Window.create(Window.java:426)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1081)
at org.eclipse.jface.window.Window.open(Window.java:785)
at com.swtdesigner.gef.actions.error.DesignerExceptionUtils.showException(DesignerExceptionUtils.java:31)
at com.swtdesigner.gef.DesignerEditor.parseCompilationUnit(DesignerEditor.java:1150)
at com.swtdesigner.gef.DesignerEditor$17.execute(DesignerEditor.java:1068)
at com.swtdesigner.model.swing.properties.custom.DesignTimeHelper.execute(DesignTimeHelper.java:54)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1062)
at com.swtdesigner.gef.DesignerEditor.handleActivate(DesignerEditor.java:1055)
at com.swtdesigner.editors.MultiPageEditor.showDesignEditor(MultiPageEditor.java:421)
at com.swtdesigner.editors.MultiPageEditor$2.widgetSelected(MultiPageEditor.java:191)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1125)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1110)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:951)
at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3227)
at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2005)
at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:316)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1101)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3319)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
at org.eclipse.equinox.launcher.Main.run(Main.java:1169)

[Eric Clayberg]

We were unfamiliar with "XPCOM error -2147221164" so we did a Google search on "SWT XPCOM error". Quite a bit of interesting material is available that might help resolve the problem...

http://www.eclipse.org/swt/faq.php#browserlinux

http://www.aptana.com/trac/ticket/4997
"The SWT Browser on Linux requires that you have the MOZILLA_FIVE_HOME environment variable set and you also have the linkable Gecko libraries"

It appears to be a generic SWT Linux browser configuration / compatibility issue that affects any Eclipse plugin that needs to interact with SWT's browser support. According to the SWT FAQ entry above, Eclipse expects the local Linux environment to be configured a certain way. According to the FAQ entry, certain Linux distributions are configured properly out-of-the-box, while others need additional pieces installed and need to have the MOZILLA_FIVE_HOME environment variable configured.

BTW, according to the Eclipse.org web site, Eclipse officially only supports certain Linux distributions, and I don't see Kubuntu on that list...

http://www.eclipse.org/eclipse/developm ... vironments

That basically means that Eclipse is not tested in that environment (it may work fine for the most part, but might need some additional setup as outlined in the SWT FAQ).