System.Runtime.InteropServices.COMException (0x88980406) 翻译为：COM 异常 (0x88980406)。

Question

我们有一个连接到显微镜的WPF应用程序。 在应用程序中，有一种情况是我们可以切换显微镜的目镜。当我们这样做时，会有一个硬件调用告诉显微镜更换目镜，然后更新UI。

我们对这种情况进行了压力测试，最终得到了一个……

System.Runtime.InteropServices.COMException (0x88980406)

使用源代码 PresentationCore.dll

调用堆栈是：

Message = Exception from HRESULT: 0x88980406;Category: Critical;Priority: -1;EventId: 1;
Timestamp: Wednesday, April 13, 2011 6:35:46 PM;Message: FullText = System.Runtime.InteropServices.COMException (0x88980406): Exception from HRESULT: 0x88980406
at System.Windows.Media.Composition.DUCE.Channel.SyncFlush()
at System.Windows.Media.Composition.DUCE.CompositionTarget.UpdateWindowSettings(ResourceHandle hCompositionTarget, RECT windowRect, Color colorKey, Single constantAlpha, MILWindowLayerType windowLayerType, MILTransparencyFlags transparencyMode, Boolean isChild, Boolean isRTL, Boolean renderingEnabled, Int32 disableCookie, Channel channel)
at System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean enableRenderTarget, Nullable``1 channelSet)
at System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean enableRenderTarget)
at System.Windows.Interop.HwndTarget.UpdateWindowPos(IntPtr lParam)
at System.Windows.Interop.HwndTarget.HandleMessage(Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.SetWindowPos(HandleRef hWnd, HandleRef hWndInsertAfter, Int32 x, Int32 y, Int32 cx, Int32 cy, Int32 flags)
at System.Windows.Interop.HwndSource.Resize(Size newSize)
at System.Windows.Interop.HwndSource.OnLayoutUpdated(Object obj, EventArgs args)
at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.UIElement.UpdateLayout()
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Controls.Primitives.Popup.PopupSecurityHelper.SetWindowRootVisual(Visual v)
at System.Windows.Controls.Primitives.Popup.SetRootVisualToPopupRoot()
at System.Windows.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall)
at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding)
at System.Windows.Controls.Primitives.Popup.CreateRootPopup(Popup popup, UIElement child)
at System.Windows.Controls.ToolTip.HookupParentPopup()
at System.Windows.Controls.ToolTip.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Boolean value)
at System.Windows.Controls.PopupControlService.RaiseToolTipOpeningEvent()
at System.Windows.Controls.PopupControlService.OnRaiseToolTipOpeningEvent(Object sender, EventArgs e)
at System.Windows.Threading.DispatcherTimer.FireTick(Object unused)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at System.Windows.Application.Run()

机器配置为： Microsoft Vista SP2 .Net Framework 3.5

请提供一些关于如何解决此问题的建议。

- Deepika

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抱歉，由于您未提供完整的异常细节，我们无法进行操作。 - Daniel Hilgarth

我的 .NetFramework 4.0 项目中也发生了同样的情况，使用了 Interop.HwndTarget，并且在调整大小时出现了异常。 - coding Bott

@BerndOtt，你刚刚救了我的命，我爱你。 - Tsury

@Tsury 顺便说一下，我也可以通过高dpi设置来使我的应用程序崩溃。我会在空闲的时间尝试切换到软件渲染。也感谢你。 - coding Bott

@BerndOtt，您使用哪些方法来更改DPI？我怀疑我的项目也会更改它。 - Tsury

@Tsury 用户可以在Windows屏幕对话框中自行完成。 - coding Bott

Answer 1

正如BerndOtt所建议的那样，对我来说，这似乎与HwndTarget的调整大小有关。

我注释掉了这两行代码，现在这个问题已经解决了。

HwndTarget hwndTarget = source.CompositionTarget;
hwndTarget.RenderMode = RenderMode.SoftwareOnly;

将其放在onLoaded方法中，如此所示here。

- Tsury

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谢谢，我会尝试并希望它能解决问题。我的问题是通过xbap加载我的WPF屏幕来在IE中加载屏幕。它还使用不同的组件，托管在一个winForms基础上。因此，它可以是任何托管在此基础上的WPF控件，奇怪的是仅在Xbap关闭后才会出现此错误，这是最近的Windows更新之后发生的。 - Johan Aspeling