问题描述
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据客户说，我正在开发一个旧的RCP应用程序，该应用程序神秘地停止了工作。经过无奈的挫折之后，我终于拥有了原始开发者的计算机（XP机器）。它在那台计算机上运行良好，很好。
因此，我将其编译并放在另一台XP计算机上，并且运行良好。
在Windows 7机器上运行它，它显示启动屏幕，然后显示主UI，一秒钟后关闭。
因此，我将该项目的Eclipse工作环境复制到Windows 7计算机上，它给了我相同的行为以及错误消息：
org.eclipse.swt.SWTError: No more handles
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:3803)
at org.eclipse.swt.SWT.error(SWT.java:3695)
at org.eclipse.swt.SWT.error(SWT.java:3666)
at org.eclipse.swt.graphics.Image.<init>(Image.java:730)
at org.eclipse.jface.resource.FileImageDescriptor.createImage(FileImageDescriptor.java:176)
at org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:227)
at org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:205)
at org.eclipse.gef.ui.palette.editparts.PaletteEditPart$ImageCache.getimage(PaletteEditPart.java:396)
at org.eclipse.gef.ui.palette.editparts.PaletteEditPart.setimageDescriptor(PaletteEditPart.java:353)
at org.eclipse.gef.internal.ui.palette.editparts.ToolEntryEditPart.refreshVisuals(ToolEntryEditPart.java:455)
at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:676)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:571)
at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:235)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:219)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:198)
at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:727)
at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:677)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:571)
at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:235)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:219)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:198)
at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:727)
at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:677)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:571)
at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:235)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:219)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:198)
at org.eclipse.gef.editparts.SimpleRootEditPart.setContents(SimpleRootEditPart.java:101)
at org.eclipse.gef.ui.palette.PaletteViewer.setPaletteRoot(PaletteViewer.java:397)
at org.eclipse.gef.EditDomain.setPaletteViewer(EditDomain.java:360)
at org.eclipse.gef.ui.palette.PaletteViewerProvider.hookPaletteViewer(PaletteViewerProvider.java:76)
at org.eclipse.gef.ui.palette.PaletteViewerProvider.createPaletteViewer(PaletteViewerProvider.java:59)
at org.eclipse.gef.ui.views.palette.PaletteViewerPage.createControl(PaletteViewerPage.java:63)
at org.eclipse.gef.ui.views.palette.PaletteView.doCreatePage(PaletteView.java:100)
at org.eclipse.ui.part.PageBookView.createPage(PageBookView.java:399)
at org.eclipse.ui.part.PageBookView.partActivated(PageBookView.java:741)
at org.eclipse.ui.internal.PartListenerList$1.run(PartListenerList.java:72)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:880)
at org.eclipse.ui.internal.PartListenerList.fireEvent(PartListenerList.java:57)
at org.eclipse.ui.internal.PartListenerList.firePartActivated(PartListenerList.java:70)
at org.eclipse.ui.internal.PartService.firePartActivated(PartService.java:186)
at org.eclipse.ui.internal.PartService.setActivePart(PartService.java:305)
at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:56)
at org.eclipse.ui.internal.PartList.setActivePart(PartList.java:126)
at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3491)
at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:610)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2832)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2729)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2721)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2673)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2668)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2652)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2635)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:708)
at [companyname].gef.ApplicationWorkbenchWindowAdvisor.postwindowOpen(ApplicationWorkbenchWindowAdvisor.java:111)
at org.eclipse.ui.internal.WorkbenchWindow.fireWindowOpened(WorkbenchWindow.java:1229)
at org.eclipse.ui.internal.WorkbenchWindow.open(WorkbenchWindow.java:786)
at org.eclipse.ui.internal.Workbench$22.runWithException(Workbench.java:1043)
at org.eclipse.ui.internal.StartupThreading$startupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncmessages(Synchronizer.java:133)
at org.eclipse.swt.widgets.display.runAsyncmessages(display.java:3800)
at org.eclipse.swt.widgets.display.readAnddispatch(display.java:3425)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
at org.eclipse.ui.internal.Workbench$27.runWithException(Workbench.java:1363)
at org.eclipse.ui.internal.StartupThreading$startupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncmessages(Synchronizer.java:133)
at org.eclipse.swt.widgets.display.runAsyncmessages(display.java:3800)
at org.eclipse.swt.widgets.display.readAnddispatch(display.java:3425)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2295)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at [companyname].gef.Application.start(Application.java:28)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(UnkNown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(UnkNown Source)
at java.lang.reflect.Method.invoke(UnkNown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
解决方法
如果某些东西在Win XP上能正常运行，而在Win 7上却不起作用，则可能是SWT错误。我建议您在Eclipse bugzilla中引发一个错误。
,我已经经历过很多次了，这与资源的处置有关。您可能正在创建Font，Image对象，而不通过显式调用.dispose（）释放它们。我怀疑它与Windows 7有关，它是否也会在Windows 7上发生，但是可能会花费更长的时间，因为您可能在该计算机上拥有更多的系统资源。确保您跟踪并处置分配的资源通常可以解决该问题。