Re: [ihs_4664@yahoo.com: drag-n-drop can't be customized by the target buffer]

["Jan D." <jan.h.d@swipnet.se>]

Richard Stallman wrote:
> Would the people who work on drag-n-drop please think about this idea?
> 
> ------- Start of forwarded message -------
> To: gnu-emacs-bug@moderators.isc.org
> From: Kevin Rodgers <ihs_4664@yahoo.com>
> Newsgroups: gnu.emacs.bug
> Date: Fri, 27 Aug 2004 11:56:49 -0600
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> Cc: 
> Subject: drag-n-drop can't be customized by the target buffer

...


> It would be better if each of the term/foo-win.el files had something
> like:
> 
> (defvar drag-n-drop-function 'find-file)
> 
> (defun foo-drag-n-drop (event)
> ...
>    (mapc drag-n-drop-function (car (cdr (cdr event))))
> ...
> )
> 
> so that vm-mail-mode etc. could say:
> 
> (set (make-local-variable 'drag-n-drop-function)
>       (lambda (file)
>         (vm-mime-attach-file file (or (vm-mime-default-type-from-filename file)
>                                       "application/octet-stream"))))
> 

It is not that simple, since drag and drop may involve text, pictures, URLs and 
not just only files.  But if you just want files that exist, the current CVS 
version of Emacs allows you to do this when using X (i.e. not Windows or Mac OS X):

(set (make-local-variable 'x-dnd-protocol-alist)
      '(("^file:" . my-dnd-fun)))

(defun my-dnd-fun (url action)
   (let ((file (x-dnd-get-local-file-name url t)))
     (vm-mime-attach-file file (or (vm-mime-default-type-from-filename file)
				  "application/octet-stream"))))


	Jan D.