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The main thread of the WPF application that starts automatically at boot will forever wait for the touch thread to execute #3147

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The main thread of the WPF application that starts automatically at boot will forever wait for the touch thread to execute#3147
Labels
BugProduct bug (most likely)area-Touch
Milestone
Future
@lindexi

Description

@lindexi
lindexi
opened on Jun 16, 2020
  • .NET Core Version:3.1.300
  • Windows version: 10.0.18362
  • Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes

Problem description:

The WPF application does not show the main window.

Because the main thread is waiting for the logic execution of the Stylus Input thread.

The main thread execution waiting method is PresentationCore.dll! System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo()

wpf/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Input/Stylus/Wisp/PenThreadWorker.cs

Lines 574 to 592 in 08dc7bc

internal TabletDeviceInfo[] WorkerGetTabletsInfo()
{
// Set data up for this call
WorkerOperationGetTabletsInfo getTablets = new WorkerOperationGetTabletsInfo();
lock(_workerOperationLock)
{
_workerOperation.Add(getTablets);
}
// Kick thread to do this work.
MS.Win32.Penimc.UnsafeNativeMethods.RaiseResetEvent(_pimcResetHandle.Value);
// Wait for this work to be completed.
getTablets.DoneEvent.WaitOne();
getTablets.DoneEvent.Close();
return getTablets.TabletDevicesInfo;
}

What is the Stylus Input thread doing at this time? It is waiting for touch input

So the main thread cannot wait for the execution of the Stylus Input thread to complete, the main thread will always wait

Actual behavior:

The main thread callstack

 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) (IL≈0x0014, Native=0x6EC56B10+0x21)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) (IL≈0x0000, Native=0x6EC56AD0+0x28)
 	mscorlib.dll!System.Threading.WaitHandle.WaitOne() (IL=epilog, Native=0x6EC56AB0+0x12)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.WorkerGetTabletsInfo() (IL≈0x002F, Native=0x6C420C30+0xBE)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL=epilog, Native=0x6C439AB8+0x64)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.OnDeviceChange() (IL≈0x000F, Native=0x6C3E9830+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x004C, Native=0x6C3E85C0+0x73)
 	PresentationFramework.dll!System.Windows.SystemResources.InvalidateTabletDevices(MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam) (IL=epilog, Native=0x6B3EA58C+0x9D)
 	PresentationFramework.dll!System.Windows.SystemResources.SystemThemeFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0094, Native=0x6AC6FC60+0x96)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6C9DB400+0x23)
 	mscorlib.dll!System.Threading.SynchronizationContext.InvokeWaitMethodHelper(System.Threading.SynchronizationContext syncContext, System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) (IL=epilog, Native=0x6EC55D30+0x14)
 	PresentationCore.dll!MS.Win32.Penimc.UnsafeNativeMethods.CreatePimcManager() (IL=0x0022, Native=0x6C422318+0x53)
 	PresentationCore.dll!MS.Win32.Penimc.UnsafeNativeMethods.UnsafeNativeMethods() (IL=prolog, Native=0x6C422288+0x21)
 	PresentationCore.dll!System.Windows.Input.PenThreadWorker.PenThreadWorker() (IL≈0x004C, Native=0x6C42080C+0xCB)
 	PresentationCore.dll!System.Windows.Input.PenThreadPool.GetPenThreadForPenContextHelper(System.Windows.Input.PenContext penContext) (IL≈0x005B, Native=0x6C42067C+0xE5)
 	PresentationCore.dll!System.Windows.Input.PenThreadPool.GetPenThreadForPenContext(System.Windows.Input.PenContext penContext) (IL=epilog, Native=0x6C4205A8+0x84)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTabletsImpl() (IL≈0x0009, Native=0x6C439AB8+0x2D)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.UpdateTablets() (IL=0x0042, Native=0x6C439A24+0x5A)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispTabletDeviceCollection.WispTabletDeviceCollection() (IL≈0x003D, Native=0x6BF31B38+0xC2)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.WispTabletDevices.get() (IL=0x000E, Native=0x6BF5DF4C+0x20)
 	PresentationCore.dll!System.Windows.Input.StylusWisp.WispLogic.RegisterHwndForInput(System.Windows.Input.InputManager inputManager, System.Windows.PresentationSource inputSource) (IL≈0x0032, Native=0x6BF5DD50+0x8F)
 	PresentationCore.dll!System.Windows.Interop.HwndStylusInputProvider.HwndStylusInputProvider(System.Windows.Interop.HwndSource source) (IL=0x005A, Native=0x6BF5DBCC+0xF8)
 	PresentationCore.dll!System.Windows.Interop.HwndSource.Initialize(System.Windows.Interop.HwndSourceParameters parameters) (IL=0x0253, Native=0x6BF5C4C8+0x433)
 	PresentationFramework.dll!System.Windows.Window.CreateSourceWindow(bool duringShow) (IL=0x0082, Native=0x6AC1C0F4+0x1E0)
 	PresentationFramework.dll!System.Windows.Window.CreateSourceWindowDuringShow() (IL=epilog, Native=0x6ACBB474+0xF)
 	PresentationFramework.dll!System.Windows.Window.SafeCreateWindowDuringShow() (IL=epilog, Native=0x6AC1D7B4+0x41)
 	PresentationFramework.dll!System.Windows.Window.ShowHelper(object booleanBox) (IL=0x003B, Native=0x6AC1D644+0x78)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl() (IL≈0x007A, Native=0x6C9DE6D0+0xD2)
 	WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(object state) (IL=epilog, Native=0x6C9DE690+0x3C)
 	mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) (IL≈0x0079, Native=0x6EC82DC0+0xE5)
 	mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) (IL=epilog, Native=0x6EC82DA0+0x16)
 	mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) (IL=epilog, Native=0x6EC82D30+0x41)
 	WindowsBase.dll!MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext executionContext, System.Threading.ContextCallback callback, object state) (IL=epilog, Native=0x6C9DE480+0x63)
 	WindowsBase.dll!System.Windows.Threading.DispatcherOperation.Invoke() (IL=0x0020, Native=0x6C9DE340+0x4E)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.ProcessQueue() (IL=0x00F6, Native=0x6C9DA870+0x165)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.WndProcHook(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL=0x0090, Native=0x6C9DAB70+0x5A)
 	WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) (IL≈0x0030, Native=0x6C9DC1F0+0x9B)
 	WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) (IL≈0x0036, Native=0x6C9DC170+0x6B)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) (IL≈0x0077, Native=0x6C9DC010+0x52)
 	WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) (IL≈0x0002, Native=0x6C9DBF70+0x34)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) (IL≈0x00BB, Native=0x6C9DA450+0x131)
 	WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam) (IL=0x0130, Native=0x6C9DB9C0+0xEE)
 	[ToNative]
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame) (IL≈0x0040, Native=0x6C9D84CC+0xB1)
 	WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame frame) (IL=epilog, Native=0x6C9D8124+0x4A)
 	PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore) (IL=0x0024, Native=0x6ABF4E70+0x5A)
 	PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window) (IL=0x00EE, Native=0x6ABF4CEC+0x74)
 	PresentationFramework.dll!System.Windows.Application.Run(System.Windows.Window window) (IL=epilog, Native=0x6ABF4ADC+0x2B)
 	PresentationFramework.dll!System.Windows.Application.Run() (IL=epilog, Native=0x6ABF46C8+0x1C)
 	Lindexi.WPF.exe!Lindexi.Program.Initialize() (IL≈0x000E, Native=0x0592A0A0+0x54)
 	Lindexi.WPF.exe!Lindexi.Program.Main(string[] args) (IL=0x001C, Native=0x00DF0448+0x42)

The Stylus Input thread callstack

>	PresentationCore.dll!System.Windows.Input.PenThreadWorker.ThreadProc() (IL≈0x00AF, Native=0x6C421E44+0x176)
 	mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) (IL=epilog, Native=0x6EC56060+0x9D)
 	mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) (IL≈0x0079, Native=0x6EC82DC0+0xE5)
 	mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) (IL=epilog, Native=0x6EC82DA0+0x16)
 	mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) (IL=epilog, Native=0x6EC82D30+0x41)
 	mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() (IL=epilog, Native=0x6EC56014+0x44)

Expected behavior:

The main thread will not wait for the Stylus Input thread all the time

Minimal repro:

The empty WPF application and set the WPF application starts automatically at boot. After the device is started, the touch screen HID device will be connected.

I tested it hundreds of times and it appeared once. This seems to be part of the WPF touch thread processing problem.

Related issues:

#78

#928

microsoft/dotnet#480

#2054

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