OS Version: Microsoft Windows NT 10.0.19042.0 (64bit)
NeeView Version: 39.4 (.msi)

System.InvalidOperationException: 主マウス ボタンを押しているときにのみ、DragMove を呼び出せます。
   場所 System.Windows.Window.DragMove()
   場所 NeeView.Windows.WindowCaptionEmulator.OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
   場所 NeeView.MainWindowCaptionEmulator.OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
   場所 System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   場所 System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   場所 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   場所 System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   場所 System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
   場所 System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   場所 System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   場所 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   場所 System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   場所 System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   場所 System.Windows.Input.InputManager.ProcessStagingArea()
   場所 System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   場所 System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   場所 System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   場所 System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   場所 System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   場所 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   場所 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   場所 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   場所 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   場所 System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   場所 MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   場所 MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   場所 System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   場所 System.Windows.Application.RunDispatcher(Object ignore)
   場所 System.Windows.Application.RunInternal(Window window)
   場所 NeeView.App.Main()