Page 197	Table of Contents	Index	Page 199
	Chapters
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 A, B, C, D, E

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CHAPTER 22. EXTENDED STREAM INPUT

• :clear-input - corresponds to gestures that cause the current input buffer to be cleared.
  On Genera, this will match the #\Clear-Input character. On other systems, this may
  match the event corresponding to typing Control-U.
  
  
• :complete - corresponds to the gestures that tell the completion facility to complete the
  current input. On most systems, this will typically match the #\Tab or #\Escape character.
  On Genera, this will match the #\Complete character as well.
  
  
• :help - corresponds to the gestures that tell accept and the completion facility to display
  a help message. On most systems, this will typically match the event corresponding to
  typing Control-/. On Genera, this will match the #\Help character as well.
  
  
• :possibilities - corresponds to the gestures that tell the completion facility to display
  the current set of possible completions. On most systems, this will typically match the
  event corresponding to typing Control-?.
  

Here are the required, standard pointer gesture names:

• :select - corresponds to the gesture that is used to "select" the object being pointed to
  with the pointer. Typically, this will correspond to the left button on the pointer.
  
  
• :describe - corresponds to the gesture that is used to "describe" or display some sort
  of documentation on the object being pointed to with the pointer. Typically, this will
  correspond to the middle button on the pointer.
  
  
• :menu - corresponds to the gesture that is used to display a menu of all possible operation
  on the object being pointed to with the pointer. Typically, this will correspond to the right
  button on the pointer.
  
  
• :edit - corresponds to the gesture that is used to "edit" the object being pointed to with
  the pointer. Typically, this will correspond to the left button on the pointer with some
  modifier key held down (such as the :meta key).
  
  
• :delete - corresponds to the gesture that is used to "delete" the object being pointed to
  with the pointer. Typically, this will correspond to the middle button on the pointer with
  some modifier key held down (such as the :shift key).

22.4 The Pointer Protocol

=> pointer [Protocol Class]
The protocol class that corresponds to a pointing device. If you want to create a new class that
behaves like a pointer, it should be a subclass of pointer. Subclasses of pointer must obey the
pointer protocol. Members of this class are mutable.

=> pointerp object [Function]
Returns true if object is a pointer, otherwise returns false.

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Page 197	Table of Contents	Index	Page 199
	Chapters
	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 A, B, C, D, E