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XtGetClassExtension(3Xt)	XT FUNCTIONS	     XtGetClassExtension(3Xt)



NAME
  XtGetClassExtension - locate a class extension record

SYNTAX
  XtPointer XtGetClassExtension(object_class, byte_offset type, version,
  record_size)
	WidgetClass object_class;
	Cardinal byte_offset;
	XrmQuark type;
	long version;
	Cardinal record_size;

ARGUMENTS

  object_class
	    Specifies the widget class containing the extension list to be
	    searched.

  byte_offset
	    Specifies the offset in bytes form the base of the widget class
	    of the extension field to be searched.

  type	    Specifies the name of the class extension to be located.

  version   Specifies the minimum acceptable version of the class extension
	    required for a match.

  record_size
	    Specifies the minimum acceptable length of the class extension
	    record required for match, or 0.

DESCRIPTION
  The list of extension records at the specified offset in the specified
  widget_class will be searched for a match on the specified type, a version
  greater than or equal to the specified version, and a record size greater
  than or equal the specified record_size if it is nonzero.  XtGetClass-
  Extension returns a pointer to a matching extension record or NULL if no
  match is found. The returned extension record is owned by the widget class
  and must not be modified or freed by the caller, except possibly to be
  modified by the widget class owner.

SEE ALSO
  X Toolkit Intrinsics - C Language Interface
  Xlib - C Language X Interface















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