How to disable WPF ContextMenu animations?

Question

I\'m trying to hunt down what bit I need to tweak to get ContextMenus in WPF to stop animating when they appear/disappear.

From what I can tell, WPF creates a Popup

Answer 1

I spent a good half hour trying to figure out how to do this in code - I'm sure its obvious if you know the framework better:

var app = new Application();
app.Resources.Add(SystemParameters.MenuPopupAnimationKey, PopupAnimation.None);
app.Run(myThing);

Answer 2

In your previous question, Rob showed you the reason why it acts like that. Can you not create a new ControlTemplate for your ContextMenu and set PopupAnimation property to None like the following :

               <Popup x:Name="PART_Popup" 
                   AllowsTransparency="true" 
                   Focusable="false" 
                   HorizontalOffset="-2" 
                   IsOpen="{Binding IsSubmenuOpen, 
                            RelativeSource={RelativeSource TemplatedParent}}" 
                   PopupAnimation="None" 
                   Placement="Right" 
                   VerticalOffset="-3">

You could create your own ContextMenu or apply a ControlTemplate using the shown code to specific instances.

Answer 3

I've been struggling with this too. I've found that the solution is to "override" the system parameter that control popup animation.

Do this by defining a resource (perhaps in your Themes\Generic.xaml) like this:

<PopupAnimation x:Key="{x:Static SystemParameters.MenuPopupAnimationKey}">None</PopupAnimation>