|| Specifies the connection to the X server.
function allows other threads to use the specified display again.
Any threads that have blocked on the display are allowed to continue.
Nested locking works correctly; if
has been called multiple times by a thread, then
must be called an equal number of times before the display is
This function has no effect unless Xlib was successfully initialized
for threads using
"Using Xlib With Threads"
Christophe Tronche, email@example.com