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X11R7.4 - man page for xgetextensionversion (x11r4 section 3)

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XGetExtensionVersion(3) 		   X FUNCTIONS			  XGetExtensionVersion(3)

       XGetExtensionVersion - query the version of the input extension.

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

       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.

       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  pro-
       tocol  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  proto-
       col requests contained by previous versions.

       You should use XFree to free the XExtensionVersion structure.

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


       Programming With Xlib

X Version 11				   libXi 1.2.1			  XGetExtensionVersion(3)
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