How to copy to clipboard in Emacs Lisp

Question

I want to copy a string to the clipboard (not a region of any particular buffer, just a plain string). It would be nice if it were also added to the kill-ring. Here's an example:

(copy-to-clipboard "Hello World") 

Does this function exist? If so, what is it called and how did you find it? Is there also a paste-from-clipboard function?

I can't seem to find this stuff in the Lisp Reference Manual, so please tell me how you found it.

Answer 1

You're looking for kill-new.

kill-new is a compiled Lisp function in `simple.el'.  (kill-new string &optional replace yank-handler)  Make string the latest kill in the kill ring. Set `kill-ring-yank-pointer' to point to it. If `interprogram-cut-function' is non-nil, apply it to string. Optional second argument replace non-nil means that string will replace the front of the kill ring, rather than being added to the list.  Optional third arguments yank-handler controls how the string is later inserted into a buffer; see `insert-for-yank' for details. When a yank handler is specified, string must be non-empty (the yank handler, if non-nil, is stored as a `yank-handler' text property on string).  When the yank handler has a non-nil PARAM element, the original string argument is not used by `insert-for-yank'.  However, since Lisp code may access and use elements from the kill ring directly, the string argument should still be a "useful" string for such uses.