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Text File  |  1989-04-23  |  1.3 KB  |  35 lines
  1. Macintosh
  2. Sample Code Notes
  3. _____________________________________________________________________________
  4.                                                   Developer Technical Support
  5.  
  6. #16:    OffSample
  7.  
  8. Written by:    Mark Bennett
  9.  
  10. Versions:            1.00                        April 1989
  11.  
  12. Components:            OffSample.p                    April 1, 1989
  13.                     OffSample.r                    April 1, 1989
  14.                     OffSample.h                    April 1, 1989
  15.                     POffSample.make                April 1, 1989
  16.  
  17. Required:            Offscreen.p                    April 1, 1989
  18.                     Offscreen.incl.p            April 1, 1989
  19.                     UFailure.p                    November 1, 1988
  20.                     UFailure.incl.p                November 1, 1988
  21.                     UFailure.a                    November 1, 1988
  22. _____________________________________________________________________________
  23.  
  24. OffSample demonstrates the usage of the Offscreen unit.  It shows 
  25. how to use off-screen bitmaps and pixel maps to produce flicker-
  26. free updating with a minimum of code restructuring.  OffSample 
  27. attempts to reduce the amount of ╥knowledge╙ it has of the off-
  28. screen structure so as to minimize its dependence upon that unit.
  29.  
  30. OffSample emphasizes using the Offscreen unit; it is not intended 
  31. to be viewed as a complete application on which to base some 
  32. larger effort.  Instead, its method of using off-screen bitmaps 
  33. and pixel maps should be studied and adapted to other applications 
  34. that desire features like flicker-free updating.
  35.