hpux man page for xprotocol

XProtocol()															       XProtocol()

Name
  XProtocolRevision, XProtocolVersion, ProtocolRevision, ProtocolVersion - return protocol release or version.

Synopsis
  int XProtocolRevision(display)
	   Display *display;
  int XProtocolVersion(display)
	   Display *display;

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

Returns
  The revision or version number.

Description
  XProtocolRevision() returns the minor protocol revision number of the X server.  XProtocolVersion() returns the major version number of the
  X protocol associated with the connected display.  As of Release 4 and 5, the protocol revision level is zero, and the major version number
  is 11.

  The C language macros ProtocolRevision() and ProtocolVersion() are equivalent and slightly more efficient.

See Also
  XVendorRelease(), XServerVendor().

Xlib - Macro Equivalents													       XProtocol()