Webcam setting causing Captura to crash
Describe the bug If I set webcam to "No Webcam" in the setting, the next time I try to enter Webcam section in the setting, Captura will crash.
To Reproduce
- Go to Webcam setting
- Switch Webcam to "No Webcam"
- Click "back" then click "Webcam" again
- Crash
Expected behavior I should be able to enter Webcam setting again normally.
Desktop
- OS: Windows 10
- RAM: 8GB
- CPU: i7 2GHz
- Graphic Card: NVIDIA GeForce MX150
- Captura Version: v9.0.0
Error Messages
System.NullReferenceException: 未将对象引用设置到对象的实例。
在 Captura.WebcamPage.b__9_0(Object S, DependencyPropertyChangedEventArgs E)
在 System.Windows.UIElement.RaiseDependencyPropertyChanged(EventPrivateKey key, DependencyPropertyChangedEventArgs args)
在 System.Windows.UIElement.OnIsVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
在 System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
在 System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
在 System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
在 System.Windows.UIElement.UpdateIsVisibleCache()
在 System.Windows.UIElement.OnVisualParentChanged(DependencyObject oldParent)
在 System.Windows.Controls.Page.OnVisualParentChanged(DependencyObject oldParent)
在 System.Windows.Media.Visual.FireOnVisualParentChanged(DependencyObject oldParent)
在 System.Windows.Media.Visual.AddVisualChild(Visual child)
在 System.Windows.FrameworkElement.set_TemplateChild(UIElement value)
在 System.Windows.Controls.ContentPresenter.UseContentTemplate.BuildVisualTree(FrameworkElement container)
在 System.Windows.StyleHelper.ApplyTemplateContent(UncommonField1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate) 在 System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField1 templateDataField, FrameworkElement container)
在 System.Windows.FrameworkElement.ApplyTemplate()
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Controls.Border.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Controls.Control.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Controls.DockPanel.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
在 System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Controls.Border.MeasureOverride(Size constraint)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.Window.MeasureOverrideHelper(Size constraint)
在 System.Windows.Window.MeasureOverride(Size availableSize)
在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
在 System.Windows.UIElement.Measure(Size availableSize)
在 System.Windows.ContextLayoutManager.UpdateLayout()
在 System.Windows.Interop.HwndSource.SetLayoutSize()
在 System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
在 System.Windows.Window.SetRootVisual()
在 System.Windows.Window.SetRootVisualAndUpdateSTC()
在 System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
在 System.Windows.Window.CreateSourceWindow(Boolean duringShow)
在 System.Windows.Window.ShowHelper(Object booleanBox)
在 System.Windows.Window.ShowDialog()
在 Captura.App.App_OnDispatcherUnhandledException(Object Sender, DispatcherUnhandledExceptionEventArgs Args)
在 System.Windows.Threading.Dispatcher.CatchException(Exception e)
在 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
在 System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
在 MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
在 MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
在 System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
在 System.Windows.Application.RunDispatcher(Object ignore)
在 System.Windows.Application.RunInternal(Window window)
在 Captura.App.Main()
Source: MathewSachin/Captura