XdbeQueryExtension (3)

Leading comments

Copyright (c) 1995  Hewlett-Packard Company

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
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The above copyright n...

(The comments found at the beginning of the groff file "man3/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 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().