Button Click Queued On Dispatcher

When I click a button in wpf, is it the mouse click or the button click event that gets queued onto the disp开发者_JAVA百科atcher? Is there a way to prove this?

This is currently what I'm doing to check all the posted operations. But I can't tell if the operation came from mouse move event/backgroundthread/etc.

        Application.Current.Dispatcher.Hooks.OperationPosted += (sender, e) =>
        {
            var operation = e.Operation;              
        };

The event will be invoked in the context of the dispatcher.

You can check this by reading SynchronizationContext.Current. It will be an instance of DispatcherSynchronizationContext whenever you are in a dispatcher context.