1XdbeQueryExtension(3)             X FUNCTIONS            XdbeQueryExtension(3)
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NAME

6       XdbeQueryExtension  -  returns  the  version  of  DBE  supported by the
7       server.
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SYNOPSIS

10       #include <X11/extensions/Xdbe.h>
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12       Status XdbeQueryExtension(
13           Display *dpy,
14           int     *major_version_return,
15           int     *minor_version_return)
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DESCRIPTION

18       Sets major_version_return and minor_version_return  to  the  major  and
19       minor DBE protocol version supported by the server.  If the DBE library
20       is compatible with the version returned by the  server,  this  function
21       returns  non-zero.   If  dpy  does not support the DBE extension, or if
22       there was an error during communication with  the  server,  or  if  the
23       server  and  library  protocol versions are incompatible, this function
24       returns zero.  No other Xdbe functions may be called before this  func‐
25       tion.   If  a  client violates this rule, the effects of all subsequent
26       Xdbe calls that it makes are undefined.
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SEE ALSO

29       DBE,  XdbeAllocateBackBufferName(),  XdbeBeginIdiom(),  XdbeDeallocate‐
30       BackBufferName(),  XdbeEndIdiom(),  XdbeFreeVisualInfo(),  XdbeGetBack‐
31       BufferAttributes(), XdbeGetVisualInfo(), XdbeSwapBuffers().
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36X Version 11                     libXext 1.3.3           XdbeQueryExtension(3)
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