[C++] OnDrop - Get widget being dropped

I’m trying to handle an OnDrop event on my SCompoundWidget. It is receiving the event from my UserWidget blueprint. I’m unsure how to get the UserWidget from the DragDropEvent passed into the OnDrop().

OnDrop( const FGeometry& MyGeometry, const FDragDropEvent& DragDropEvent )

I want to position it based on the local coordinates of the SCompoundWidget.