XGrabServer, XUngrabServer - grab the server
int XGrabServer(Display *display);
int XUngrabServer(Display *display);
- Specifies the connection to the X server.
function disables processing of requests and close downs
on all other connections than the one this request arrived on. You should not
grab the X server any more than is absolutely necessary.
function restarts processing of requests and close
downs on other connections. You should avoid grabbing the X server as much as
XGrabButton(3), XGrabKey(3), XGrabKeyboard(3), XGrabPointer(3)
Xlib - C Language X Interface