Error on mousedown event

2 posts, 0 answers
  1. deepak
    deepak avatar
    25 posts
    Member since:
    Jan 2011

    Posted 17 Aug 2011 Link to this post

    Hi all
    I am using latest hotfix version of radcontrols. following error occured as i can not use radpane. how can i supress this error?

    System.NullReferenceException was unhandled by user code
      Message=Object reference not set to an instance of an object.
      Source=Telerik.Windows.Controls.Docking
      StackTrace:
           at Telerik.Windows.Controls.RadDocking.SelectActivePane(RadPane radPane) in c:\TB\117\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 332
           at Telerik.Windows.Controls.Docking.PaneGroupBase.OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e) in c:\TB\117\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Docking\Docking\Parts\PaneGroupBase.cs:line 227
           at System.Windows.UIElement.OnGotKeyboardFocusThunk(Object sender, KeyboardFocusChangedEventArgs e)
           at System.Windows.Input.KeyboardFocusChangedEventArgs.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.RaiseTrustedEvent(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.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 Telerik.Windows.Controls.Docking.PaneGroupBase.OnMouseLeftButtonDown(Object sender, RoutedEventArgs e) in c:\TB\117\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Docking\Docking\Parts\PaneGroupBase.cs:line 392
           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(DependencyObject sender, 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(DependencyObject sender, RoutedEventArgs args)
           at System.Windows.UIElement.RaiseTrustedEvent(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, WindowMessage 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, Int32 numArgs)
           at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
      InnerException:
  2. Konstantina
    Admin
    Konstantina avatar
    2332 posts

    Posted 22 Aug 2011 Link to this post

    Hello Deepak,

    I tried to reproduce this, but to no avail. Could you please give us some more details how to reproduce this error? If you could send us a sample project and a steps to reproduce it will be helpful. In that way we will be able to track down the source of the problem in a timely manner. Also, please try with the latest internal build which will be uploaded today, this issue might be already addressed.

    All the best,
    Konstantina
    the Telerik team

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