Provided by: libx11-doc_1.6.3-1ubuntu2.2_all 

NAME
XNoOp - No Operation
SYNTAX
int XNoOp(Display *display);
ARGUMENTS
display Specifies the connection to the X server.
DESCRIPTION
The XNoOp function sends a NoOperation protocol request to the X server, thereby exercising the
connection.
SEE ALSO
Xlib - C Language X Interface
X Version 11 libX11 1.6.3 XNoOp(3)