[O] Portable way to insert and display images in an org entry ?

[Xavier]

Hello,

I use org-mode on many different OS (cygwin, OSX, GNU/linux), as such, I
have problems when I want to include a link of the 'file:' family.

Last example, I wanted to include a picture from my Dropbox into my org
file which is ok. But, C-c C-x C-v can't do anything good on my cygwin
installation since the link is:

[[file:Captures d'écran/20150421-SOAINFRA-saturation.png][Illustration
de la saturation du TBS I7_SOAINFRA_AA_DATA01]]

What can be a good alternative ? Add my file as an attachment and link
from it ? (is it even possible ?)

Regards
-- Xavier