how to go back to default active handler while using datavisualization

[Make it GREAT again]

Hello guys,
It turns out that we have to switch active handler into default handler while we use custom inputhandler to deal with something. Unfortunately, how can I get it switched.

[SGaist]

Hi,

That's a pretty obscure description. Can you give more details ?

[Make it GREAT again]

Hi, SGaist. It is done. Thanks for reply.

[SGaist]

Sorry but it is not really any clearer.