NullReferenceException is thrown on closing by Alt+Space and C

[kenjiuno]

Hi.

NullReferenceException is thrown, when I close Fluent.Ribboned window by pressing Alt+Space and C.

This is screenshot about repro

• A main window MainWindow
• Click Button to show Window1 having Fluent.Ribbon.
• Press [Alt]+[Space] at Window1
• You will see system window menu.
• Press [C] to close
• NullReferenceException will be thrown inside Fluent.KeyTipService.Show.

Callstack:

>   Fluent.dll!Fluent.KeyTipService.Show() 行 347 + 0x6 バイト  C#
    Fluent.dll!Fluent.KeyTipService.OnDelayedShow(object sender, System.EventArgs e) 行 317    C#
    WindowsBase.dll!System.Windows.Threading.DispatcherTimer.FireTick(object unused) + 0x2f バイト   
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x52 バイト 
    WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x3a バイト    
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl() + 0xac バイト  
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(object state) + 0x38 バイト 
    mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) + 0xa7 バイト  
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) + 0x16 バイト  
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) + 0x41 バイト    
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.Invoke() + 0x5b バイト  
    WindowsBase.dll!System.Windows.Threading.Dispatcher.ProcessQueue() + 0x16b バイト    
    WindowsBase.dll!System.Windows.Threading.Dispatcher.WndProcHook(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0x5a バイト 
    WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) + 0x9b バイト    
    WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) + 0x6b バイト    
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) + 0x52 バイト 
    WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source, System.Delegate method, object args, int numArgs, System.Delegate catchHandler) + 0x3a バイト    
    WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) + 0x10e バイト 
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) + 0xf1 バイト 
    [ネイティブからマネージへの移行] 
    [マネージからネイティブへの移行] 
    WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame) + 0xb1 バイト  
    WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame frame) + 0x49 バイト  
    WindowsBase.dll!System.Windows.Threading.Dispatcher.Run() + 0x4b バイト  
    PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore) + 0x17 バイト  
    PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window) + 0x6f バイト 
    PresentationFramework.dll!System.Windows.Application.Run(System.Windows.Window window) + 0x26 バイト 
    PresentationFramework.dll!System.Windows.Application.Run() + 0x1b バイト 
    WpfApplication18.exe!WpfApplication18.App.Main() + 0x59 バイト   C#
    [ネイティブからマネージへの移行] 
    [マネージからネイティブへの移行] 
    mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args) + 0x6b バイト    
    Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() + 0x27 バイト  
    mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) + 0x6f バイト   
    mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) + 0xa7 バイト  
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) + 0x16 バイト  
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) + 0x41 バイト    
    mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() + 0x44 バイト   
    [ネイティブからマネージへの移行] 

[kenjiuno]

Thanks, it works well now!