I've looked over the documentation and haven't been able to find anything which supplies this functionality, so here goes. I'd like to request the addition of a function analogous to SDL's SDL_GetWMInfo (which returns the structure described here:
http://sdl.beuc.net/sdl.wiki/SDL_SysWMInfo).
Why this is important:
With access to the display pointer and window (X11) or window handle (Windows), individuals can implement important functionality such as drag'n'drop, copy and paste, window shaping/transparency, etc. This removes the burden from SFML to build these things in.
Implementation difficulty:
Simple. SFML already manages this information behind the scenes; the addition of one function and one class would suffice.
Regards,
Justin