这是indexloc提供的服务，不要输入任何密码
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#42 Fix Dispatcher Suspend Exception issue #43

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Merged
merged 1 commit into from
Jun 20, 2019
Merged

#42 Fix Dispatcher Suspend Exception issue #43

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17 changes: 13 additions & 4 deletions source/Components/Xceed.Wpf.AvalonDock/Controls/FocusElementManager.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ This program is provided to you under the terms of the Microsoft Public
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows;
Expand Down Expand Up @@ -53,10 +54,18 @@ internal static void SetupFocusManagement( DockingManager manager )
_windowHandler.FocusChanged += new EventHandler<FocusChangeEventArgs>( WindowFocusChanging );
//_windowHandler.Activate += new EventHandler<WindowActivateEventArgs>(WindowActivating);
_windowHandler.Attach();

if (Application.Current != null)
//Application.Current.Exit += new ExitEventHandler( Current_Exit );
Application.Current.Dispatcher.Invoke(new Action(() => Application.Current.Exit += new ExitEventHandler(Current_Exit)));
if (Application.Current != null)
{
//Application.Current.Exit += new ExitEventHandler( Current_Exit );
//Application.Current.Dispatcher.Invoke(new Action(() => Application.Current.Exit += new ExitEventHandler(Current_Exit)));

// For resolve issue "System.InvalidOperationException: Cannot perform this operation while dispatcher processing is suspended." make async subscribing instead of sync subscribing.
Action subscribeToExitAction = new Action(() => Application.Current.Exit += new ExitEventHandler(Current_Exit));
int disableProcessingCount = (int?)typeof(Dispatcher).GetField("_disableProcessingCount", BindingFlags.Instance | BindingFlags.NonPublic)?.GetValue(Dispatcher.CurrentDispatcher) ?? 0;
var dispatcherResult = disableProcessingCount == 0
? Application.Current.Dispatcher.Invoke(subscribeToExitAction)
: Application.Current.Dispatcher.BeginInvoke(subscribeToExitAction);
}
}

manager.PreviewGotKeyboardFocus += new KeyboardFocusChangedEventHandler( manager_PreviewGotKeyboardFocus );
Expand Down