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Portable Network Graphic  |  1997-07-26  |  118KB  |  816x1056  |  16-bit (511 colors)
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OCR: Sat, Feb 17 1996 Beginners Guide To Macintosh Assembly Language Programming 14ge The only event we are really interested about event number keydown. We take the key out of the event record. and return if to the calling routine for processing. .ppc heatcontrol.s and tc 68k heatcontrol.s The init frame Routine This merely contains one loop inside the other (nested) The outer loop IS the line loop (vertical) and the inner loop Is the pixel loop (horizontal). In the pixel loop, each location IS made zero The outer loop resets the of the screen back to the beginning of the line, and then sppe the displacement to the next line Thus the effect is to set every pixel in the PixMap to zero by scanning clear across each horizontal line of the Gworlds PixMap. then moving down to the next line and clea ...