UMG Widget 'Event Drilling'

[Supremative]

You could drill a widget tree in the following way:

1. Create BlueprintInterface to send events to desired widgets:
   

   

2. Add the interface to your widgets:
   

3. Create a macro library with the following macro:
   

   

4. Use the macro to send events from the bottom widget to every upper widget in the tree that does implement the interface:
   

   

5. Catch event:
   

   

Example:
Widget Tree:

Runtime:

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