redhat man page for xgetextensionversion

XGetExtensionVersion(3X11)					    X FUNCTIONS 					XGetExtensionVersion(3X11)

NAME
       XGetExtensionVersion - query the version of the input extension.

SYNTAX
       XExtensionVersion *XGetExtensionVersion(display, name)
	     Display *display;
	     char *name;

ARGUMENTS
       display	   Specifies the connection to the X server.

       name	   Specifies the extension to be queried.  The input extension name is defined in the header file XI.h.

DESCRIPTION
       The  XGetExtensionVersion  request  queries the version of the input extension, and returns an XExtensionVersion structure.  This structure
       contains a major_version and minor_version number which can be compared with constants defined in XI.h.	Support  for  additional  protocol
       requests added to the input extension after its initial release is indicated by a version number corresponding to the added requests.  Each
       version contains all the protocol requests contained by previous versions.

       You should use XFree to free the XExtensionVersion structure.

STRUCTURES
       This request returns an XExtensionVersion structure.  typedef struct {
	       int    present;
	       short  major_version;
	       short  minor_version; } XExtensionVersion;

DIAGNOSTICS
       none

SEE ALSO
       Programming With Xlib

X Version 11							    Release 6.6 					XGetExtensionVersion(3X11)