How to insert image to richtextbox from clipboard

How to insert image to richtextbox from clipboard

When I write description of request or set new item in knowledge base I need to insert image from clipboard, but now I can insert image only from file. So I need to save image in some image application (like Win paint) and after that insert image from file.

I tried copy-paste but imege don't insert.

I need to insert image faster than from file. Can you put some button to richtextbox that help to insert image from clipboard? 

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