I found that “addtoviewport” did not work immediately. LoadingMessage->AddToViewport(); ...//Some Complex Computations It will not show the “LoadingMessage” Widget until all the computations are completed. So…How to make computations after “LoadingMessage” being added to viewport?

My solution is: create a new thread [image] A new, community-hosted Unreal Engine Wiki General Announcements unreal-engine …

How to wait AddToViewport complete?

anonymous_user_2b7498ec (anonymous_user_2b7498ec) August 15, 2017, 9:35pm 2

My solution is: create a new thread