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KeyTipServices Bug

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RibbonView and RibbonWindow
This is a migrated thread and some comments may be shown as answers.
deepak
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deepak asked on 06 Mar 2012, 04:09 PM
application crashes on pressing the access key for ribbontab with following error.
System.NullReferenceException was unhandled
  Message=Object reference not set to an instance of an object.
  Source=Telerik.Windows.Controls.RibbonView
  StackTrace:
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.ShowVisualChildrenTips(UIElement element)
       at Telerik.Windows.Controls.RibbonView.KeyTipService.<>c__DisplayClass16.<ShowTips>b__8()
       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)
       at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
       at System.Windows.Threading.DispatcherOperation.InvokeImpl()
       at System.Threading.ExecutionContext.runTryCode(Object userData)
       at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Windows.Threading.DispatcherOperation.Invoke()
       at System.Windows.Threading.Dispatcher.ProcessQueue()
       at System.Windows.Threading.Dispatcher.WndProcHook(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)
       at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       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.Application.RunInternal(Window window)
       at System.Windows.Application.Run()
     

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Miro Miroslavov
Telerik team
answered on 07 Mar 2012, 07:46 AM
Hello deepak,

 Can you give us more details on how you reproduce this issue?
Thank you.

All the best,
Miro Miroslavov
the Telerik team
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RibbonView and RibbonWindow
Asked by
deepak
Top achievements
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Answers by
Miro Miroslavov
Telerik team
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