XdbeDeallocateBackBufferName - frees a DBE buffer.

       This  function  frees  a  drawable  ID,  buffer, that was obtained via XdbeAllocateBackBufferName().  The
       buffer must be a valid name for the back buffer of a window, or a protocol error results.

       BadBuffer
              The specified buffer is not associated with a window.

       XdbeDeallocateBackBufferName - frees a DBE buffer.

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

X Version 11                                      libXext 1.3.4                  XdbeDeallocateBackBufferName(3)

       #include <X11/extensions/Xdbe.h>

       Status XdbeDeallocateBackBufferName(
           Display        *dpy,
           XdbeBackBuffer buffer)