19.  Server Extension Functions  

(list-extensions display)

See XListExtensions. Returns a vector of strings.

(query-extension display name)

See XQueryExtension. name is a string or a symbol. Returns a list of three elements: the major opcode (an integer) or #f if the extension has no major opcode, the base event type code (an integer) of #f if the extension has no additional event types, and the base error code (an integer) of #f if the extension has no additional error codes. query-extension returns #f if the specified extension is not present.


Markup created by unroff 1.0,    September 24, 1996,    net@informatik.uni-bremen.de