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XdbeQueryExtension(3)		  X FUNCTIONS		 XdbeQueryExtension(3)

NAME
       XdbeQueryExtension  -  returns  the  version  of	 DBE  supported	by the
       server.

SYNOPSIS
       #include	<X11/extensions/Xdbe.h>

       Status XdbeQueryExtension(
	   Display *dpy,
	   int	   *major_version_return,
	   int	   *minor_version_return)

DESCRIPTION
       Sets major_version_return and minor_version_return to the major and mi-
       nor DBE protocol	version	supported by the server.  If the  DBE  library
       is  compatible  with  the version returned by the server, this function
       returns non-zero.  If dpy does not support the  DBE  extension,	or  if
       there  was  an  error  during  communication with the server, or	if the
       server and library protocol versions are	 incompatible,	this  function
       returns	zero.  No other	Xdbe functions may be called before this func-
       tion.  If a client violates this	rule, the effects  of  all  subsequent
       Xdbe calls that it makes	are undefined.

SEE ALSO
       DBE,  XdbeAllocateBackBufferName(),  XdbeBeginIdiom(),  XdbeDeallocate-
       BackBufferName(),  XdbeEndIdiom(),  XdbeFreeVisualInfo(),  XdbeGetBack-
       BufferAttributes(), XdbeGetVisualInfo(),	XdbeSwapBuffers().

X Version 11			 libXext 1.3.6		 XdbeQueryExtension(3)

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