Page 149	Table of Contents	Index	Page 151
	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 16. OUTPUT RECORDING

=> graphics-displayed-output-record [Protocol Class]
The protocol class that corresponds to output records for the graphics functions, such as draw-
line*. This is a subclass of displayed-output-record. If you want to create a new class that
behaves like a graphics displayed output record, it should be a subclass of graphics-displayed-output-record.
Subclasses of graphics-displayed-output-record must obey the graphics displayed output
record protocol.

=> graphics-displayed-output-record-p object [Function]
Returns true if object is a graphics displayed output record, otherwise returns false.

16.3.3 Text Displayed Output Record

Text displayed output records are used to record the textual output produced by such functions as
stream-write-char and stream-write-string. Each text displayed output record corresponds
to no more than one line of textual output (that is, line breaks caused by terpri and fresh-
line create a new text output record, as do certain other stream operations described below).
The exact contents of text displayed output records is unspecified, but they must store sufficient
information to be able to exactly redraw the original output at replay time. The minimum
information that must be captured for all text displayed output records is as follows:

• The displayed text strings.
  
  
• The starting and ending cursor positions.
  
  
• The text style in which the text string was written. Depending on the CLIM implemen-
  tation, this may be either fully merged against the medium's default or not; in the former
  case, subsequent changes to the medium's default text style will not affect replaying the
  record, but in the latter case changing the default text style will affect replaying.
  
  
• The programmer-supplied ink at the time the drawing function was called. Indirect inks
  must not be resolved, so that a user can later change the default foreground and background
  ink of the medium and have that change affect the already-created output records during
  replay.
  
  
• The programmer-supplied clipping region at the time the drawing function was called.

=> text-displayed-output-record [Protocol Class]
The protocol class that corresponds to text displayed output records. This is a subclass of
displayed-output-record. If you want to create a new class that behaves like a text dis-
played output record, it should be a subclass of text-displayed-output-record. Subclasses
of text-displayed-output-record must obey the text displayed output record protocol.

=> text-displayed-output-record-p object [Function]
Returns true if object is a text displayed output record, otherwise returns false.

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Page 149	Table of Contents	Index	Page 151
	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