PropertyGrid: Customize editors globaly

Hello,

In my PropertyGrid, I want to set "UseDisplayAttributes" to true for all my all my enum editors.

Currently, I'm using this code:

<grids:PropertyEditor PropertyType="sys:Enum">
    <grids:PropertyEditor.ValueTemplate>
        <DataTemplate>
            <editors:EnumEditBox Value="{Binding Value}" UseDisplayAttributes="True" />
        </DataTemplate>
    </grids:PropertyEditor.ValueTemplate>
</grids:PropertyEditor>

It does the job except when I use nullable enums, the editor no longer uses the "Description" attribute.

So i tried :

PropertyType="{shared:Nullable {x:Type sys:Enum}}"

But i get a TypeLoadException : GenericArguments[0], 'System.Enum', on 'System.Nullable`1[T]' violates the constraint of type 'T'.

Currently, on nullable enums, I'm using the following code, but I need to do it for each enum I want to use:

PropertyType="{shared:Nullable {x:Type mysNamespace:MyEnum}}"

Is there a better solution to force "UseDisplayAttributes" on all my EnumEditBox of my PropertyGrid ? 

Thanks.

Benjamin.