MirBSD manpage: XdbeQueryExtension(3)

XdbeQueryExtension(3X11)   X FUNCTIONS   XdbeQueryExtension(3X11)


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


     #include <X11/extensions/Xdbe.h>

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


     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 func-
     tion 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 unde-


     DBE, XdbeAllocateBackBufferName(), XdbeBeginIdiom(),
     XdbeDeallocateBackBufferName(), XdbeEndIdiom(), XdbeFreeV-
     isualInfo(), XdbeGetBackBufferAttributes(), XdbeGet-
     VisualInfo(), XdbeSwapBuffers().

XFree86                   Version 4.5.0                         1

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