Question

在Windows 10（1709）上运行.NET 4.5.2 WPF应用程序。如果重要的话，一些第三方程序集会针对.NET 4客户端配置文件。

在某些客户计算机上，有时会出现以下异常。唯一的线索是他们使用的shona语言环境是Windows最近添加的。我已经尽力重现此错误，但似乎是不可能的。在我们的开发机上，所有现有文化（包括shona）和任何定制的文化都具有有效的KeyboardLayoutId（1033），我认为它与我在此引用的“键盘布局”相对应。

指向WPF源代码的一些相关指针：

由于在CultureInfo.cs(407)处进行了构造函数调用，因此在InputLanguageManager.cs(289)处引发了异常。如果进一步研究，我们将找到根本原因-在 GetKeyboardLayout function (MSDN) 处调用InputLanguageSource.cs(238)。据我所知，对GetKeyboardLayout(_dispatcherThreadId)的调用返回了LOCALE_CUSTOM_UNSPECIFIED (4096)。 这怎么可能？！

Unhandled Exception:Culture is not supported.  Parameter name: culture  4096 (0x1000) is an invalid culture identifier.

Stack Trace:
   at System.Globalization.CultureInfo.InitializeFromCultureId(Int32 culture, Boolean useUserOverride)     
   at System.Windows.Input.InputLanguageSource.get_CurrentInputLanguage()     
   at System.Windows.Input.InputLanguageManager.get_CurrentInputLanguage()     
   at System.Windows.Documents.TextSelection.EnsureCaret(Boolean isBlinkEnabled, Boolean isSelectionActive, CaretScrollMethod scrollMethod)     
   at System.Windows.Documents.TextSelection.System.Windows.Documents.ITextSelection.UpdateCaretAndHighlight()     
   at System.Windows.Controls.Primitives.TextBoxBase.OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)     
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)     
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)     
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)     
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)     
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)     
   at System.Windows.Input.InputManager.ProcessStagingArea()     
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)     
   at System.Windows.Input.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)     
   at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)     
   at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)     
   at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)     
   at System.Windows.UIElement.Focus()     
   at System.Windows.Input.KeyboardNavigation.Navigate(DependencyObject currentElement, TraversalRequest request, ModifierKeys modifierKeys, DependencyObject firstElement)     
   at System.Windows.FrameworkElement.MoveFocus(TraversalRequest request)     
   ...

嗯...我该如何解决这个问题？如果有人可以提供一些有关如何重现此行为的线索，那肯定会很好。我已经尝试了一切...

当GetKeyboardLayout（）返回LOCALE_CUSTOM_UNSPECIFIED时，WPF间歇性崩溃吗？

0 个答案: