Is this expected behavior?

Dec 7, 2009 at 12:37 AM

If I have XAML code without documentpane like this...

 

<DockPanel>
        <ad:DockingManager x:Name="dockManager">
            <ad:DockablePane ad:ResizingPanel.ResizeWidth="0.5*">
                <ad:DockableContent Title="Curve">
                    <TextBlock Text="Hello"/>
                </ad:DockableContent>
            </ad:DockablePane>
        </ad:DockingManager>
    </DockPanel>

 

if I run and drag out Hello docking tab out, there will be one empty tab in the main window. If I try to drag it out again, I will get the following exception:

System.NullReferenceException was unhandled
  Message="Object reference not set to an instance of an object."
  Source="AvalonDock"
  StackTrace:
       at AvalonDock.DockablePane.OnHeaderMouseDown(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(DependencyObject sender, 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.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()
       at Panther.Desktop.App.Main() in c:\Working\Panther\Panther.Desktop\obj\Debug\App.g.cs:line 48
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

 

System.NullReferenceException was unhandled

  Message="Object reference not set to an instance of an object."

  Source="AvalonDock"

  StackTrace:

       at AvalonDock.DockablePane.OnHeaderMouseDown(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(DependencyObject sender, 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.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()

       at Panther.Desktop.App.Main() in c:\Working\Panther\Panther.Desktop\obj\Debug\App.g.cs:line 48

       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

       at System.Threading.ThreadHelper.ThreadStart()

  InnerException: 

 

 

Dec 7, 2009 at 12:45 AM

 

<DockPanel>
        <ad:DockingManager x:Name="dockManager">
<
ad:ResizingPanel Orientation="Vertical"> <ad:DockablePane ad:ResizingPanel.ResizeWidth="0.5*"> <ad:DockableContent Title="Hello"> <TextBlock Text="Hello"/> </ad:DockableContent> </ad:DockablePane> </ad:ResizingPanel>
       </ad:DockingManager>
</DockPanel>

If I wrap it with ResizingPanel, it will be better but not much. I can drag it out but cannot put it back in.

System.ArgumentOutOfRangeException was unhandled

  Message="Specified argument was out of the range of valid values.\r\nParameter name: index"

  Source="PresentationCore"

  ParamName="index"

  StackTrace:

       at System.Windows.Media.VisualCollection.get_Item(Int32 index)

       at System.Windows.Controls.UIElementCollection.get_Item(Int32 index)

       at AvalonDock.DockingManager.Anchor(Pane paneToAnchor, AnchorStyle anchor)

       at AvalonDock.OverlayWindow.OnDrop(OverlayWindowDockingButton owdDock, Point point)

       at AvalonDock.OverlayWindowDockingButton.OnDrop(Point point)

       at AvalonDock.DragPaneServices.EndDrag(Point point)

       at AvalonDock.DockingManager.CompleteDragging(Point ptEndDrag)

       at AvalonDock.DockingManager.OnMouseUp(MouseButtonEventArgs e)

       at System.Windows.UIElement.OnMouseUpThunk(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(DependencyObject sender, 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.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()

       at Panther.Desktop.App.Main() in c:\Working\Panther\Panther.Desktop\obj\Debug\App.g.cs:line 48

       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)

       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

       at System.Threading.ThreadHelper.ThreadStart()

  InnerException: 

 

System.ArgumentOutOfRangeException was unhandled
  Message="Specified argument was out of the range of valid values.\r\nParameter name: index"
  Source="PresentationCore"
  ParamName="index"
  StackTrace:
       at System.Windows.Media.VisualCollection.get_Item(Int32 index)
       at System.Windows.Controls.UIElementCollection.get_Item(Int32 index)
       at AvalonDock.DockingManager.Anchor(Pane paneToAnchor, AnchorStyle anchor)
       at AvalonDock.OverlayWindow.OnDrop(OverlayWindowDockingButton owdDock, Point point)
       at AvalonDock.OverlayWindowDockingButton.OnDrop(Point point)
       at AvalonDock.DragPaneServices.EndDrag(Point point)
       at AvalonDock.DockingManager.CompleteDragging(Point ptEndDrag)
       at AvalonDock.DockingManager.OnMouseUp(MouseButtonEventArgs e)
       at System.Windows.UIElement.OnMouseUpThunk(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(DependencyObject sender, 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.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()
       at Panther.Desktop.App.Main() in c:\Working\Panther\Panther.Desktop\obj\Debug\App.g.cs:line 48
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: