OS Manuals

XNoOp(3)

XNoOp - No Operation

XNoOp(3) XLIB FUNCTIONS XNoOp(3)

XNoOp - No Operation

int XNoOp(Display *display);

Specifies the connection to the X server.

The XNoOp function sends a NoOperation protocol request to the X server, thereby exercising the connection.

Xlib - C Language X Interface

libX11 1.8.14 X Version 11

libx11 1.8.14-r1 · os · ingested 2026-10-23