Odd exception new to Nov bits

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Odd exception new to Nov bits

I have a custom control that is a subtype of MenuItem.  I am getting an odd exception that an element already has a parent.  The stack trace is well within MS code in creating the popup.  The odd part is that a control is regenerating its logical children in the middle of a measure pass while creating the popup window.  My guess is that the popup window is trying to display the same elements that are in the logical tree holding the popup itself somehow.  I have dumped the current MenuItem style and am in the process of trying to use that to locallize the issue.  But, if this is truely odd I am reporting it and including the stack trace.

at System.Windows.FrameworkElement.ChangeLogicalParent(DependencyObject newParent)

at System.Windows.FrameworkElement.AddLogicalChild(Object child)

at System.Windows.Controls.UIElementCollection.AddInternal(UIElement element)

at System.Windows.Controls.Panel.reGenerateChildren()

at System.Windows.Controls.Panel.get_InternalChildren()

at System.Windows.Controls.Grid.ValidateCellsCore()

at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at MS.Internal.Helper.MeasureSingleChild(UIElement child, Size constraint)

at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)

at System.Windows.Controls.ItemsPresenter.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at MS.Internal.Helper.MeasureSingleChild(UIElement child, Size constraint)

at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)

at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)

at System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Border.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)

at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)

at System.Windows.Controls.Grid.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.ScrollViewer.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at MS.Internal.Helper.MeasureSingleChild(UIElement child, Size constraint)

at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)

at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Border.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Control.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Decorator.MeasureOverride(Size constraint)

at System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Decorator.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Primitives.PopupRoot.AnimationLayout.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

at System.Windows.Controls.Primitives.PopupRoot.MeasureOverride(Size constraint)

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)

at System.Windows.UIElement.Measure(Size availableSize)

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.CreateWindow(Boolean asyncCall)

at System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.UIElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty dp, PropertyMetadata metadata, Boolean isCoerceValue, Boolean isOldValueValid, Object oldValue, ValueSource oldValueSource, Boolean oldValueIsDeferred, Boolean coerceWithDeferredReference)

at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp)

at System.Windows.Data.BindingExpression.Invalidate()

at System.Windows.Data.BindingExpression.TransferValue(Object newValue)

at MS.Internal.Data.ClrBindingWorker.NewValueAvailable(Boolean dependencySourcesChanged, Boolean initialValue)

at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue)

at MS.Internal.Data.PropertyPathWorker.OnDependencyPropertyChanged(DependencyObject d, DependencyProperty dp)

at MS.Internal.Data.ClrBindingWorker.OnSourceInvalidation(DependencyObject d, DependencyProperty dp)

at System.Windows.Data.BindingExpression.HandlePropertyInvalidation(DependencyObject d, DependencyProperty dp)

at System.Windows.Data.BindingExpression.OnPropertyInvalidation(DependencyObject d, DependencyProperty dp)

at System.Windows.DependentList.InvalidateDependents(DependencyObject source, DependencyProperty sourceDP)

at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty dp, PropertyMetadata metadata, Boolean isCoerceValue, Boolean isOldValueValid, Object oldValue, ValueSource oldValueSource, Boolean oldValueIsDeferred, Boolean coerceWithDeferredReference)

at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference)

at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)

at System.Windows.Controls.MenuItem.OpenMenu()

at System.Windows.Controls.MenuItem.ClickHeader()

at System.Windows.Controls.MenuItem.HandleMouseDown(MouseButtonEventArgs e)

at System.Windows.Controls.MenuItem.OnMouseLeftButtonDown(MouseButtonEventArgs e)

at System.Windows.UIElement.OnMouseLeftButtonDownThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

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.ReRaiseEventAs(RoutedEventArgs args, RoutedEvent newEvent)

at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

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(RoutedEventArgs args)

at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)

at System.Windows.Input.InputManager.ProcessStagingArea()

at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)

at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)

at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)

at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at System.Windows.Interop.HwndSource.InputFilterMessage(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.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.RunInternal(Window window, String[] args)

at System.Windows.Application.Run(Window window, String[] args)

at System.Windows.Application.Run(String[] args)

at ModelMagicUI.MyApp.Main(String[] args) in C:\Documents and Settings\Michael Latta\My Documents\Visual Studio 2005\Projects\ModelMagic\ModelMagicUI\obj\Debug\MyApp.g.cs:line 52


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Odd exception new to Nov bits

  • BradDaBug

    This is still an issue with the Dec bits.

    Start with the following:

     

    /// <summary>

    /// This grid subclass is used to prebuild a grid with rows and columns for

    /// display of color chips.

    /// </summary>

    public class BigGrid : Grid {

    public BigGrid()

    : base()

    {

    for (int i = 0; i < 32; i++) {

    this.ColumnDefinitions.Add(new ColumnDefinition());

    }

    for (int i = 0; i < 32; i++) {

    this.RowDefinitions.Add(new RowDefinition());

    }

    }

    }

    /// <summary>

    /// This method creates a new ItemsPanelTemplate for a BigGrid grid.

    /// </summary>

    /// <returns></returns>

    protected ItemsPanelTemplate newBigGrid()

    {

    ItemsPanelTemplate result = new ItemsPanelTemplate();

    result.VisualTree = new FrameworkElementFactory(typeof(BigGrid));

    return result;

    }

    Have the loaded event use the newBigGrid method to set the ItemsPanel property of the following menu:

    <menu header="test" x:Name="test">

    <menuitem header="one" Grid.Column="0" Grid.Row="0"/>

    <menuitem header="two" Grid.Column="1" Grid.Row="0"/>

    <menuitem header="three" Grid.Column="2" Grid.Row="0"/>

    <menuitem header="four" Grid.Column="0" Grid.Row="1"/>

    <menuitem header="five" Grid.Column="1" Grid.Row="1"/>

    </menu>

    It seems pretty clear from the stack trace that the problem is that when Grid is used as an ItemPanel it is trying to add the menu items as logical children (via a UIElementCollection) when they are logical children of the menu.  This works with UniformGrid, but I need to be able to span columns.

     

  • Jim Stapleton

    Did you ever get this resolved, Michael

    Do you have a custom template for your menu Can you share a minimal repro that causes the problem

    Have you moved to Dec CTP bits



  • John Sheppard

    This was found to be a bug. It has been fixed (post Beta2)

    Thanks for the feedback.



  • Maris D

    I have narrowed this down a bit.

    1) Using a grid for an ItemsPanel class causes problems:
    2) If the grid has columns/rows defined; and
    3) If the MenuItems under the one with the ItemsPanel have row/column values set with Grid.Row or Grid.Column

    It looks like the Grid is trying to rearrange its children, and in doing so either gets them added more than once, or is adding them as logical children when they should not be logical children, but only visual children.

    It looks like if I want it to run on the Nov bits I get to write a new Panel subclass that does my grid layout without this behavor.  Let me know if you intend to fix this post-Nov and I will put less effort into it.

  • Odd exception new to Nov bits
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