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 minor 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 function.  If a client violates
       this rule, the effects of all subsequent Xdbe calls that it makes are undefined.

SEE ALSO

       DBE,   XdbeAllocateBackBufferName(),  XdbeBeginIdiom(),  XdbeDeallocateBackBufferName(),  XdbeEndIdiom(),
       XdbeFreeVisualInfo(), XdbeGetBackBufferAttributes(), XdbeGetVisualInfo(), XdbeSwapBuffers().

X Version 11                                      libXext 1.3.4                            XdbeQueryExtension(3)