November 1998
Intermediate to advanced
1520 pages
37h 53m
English
Content preview from Programming Windows®, Fifth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Drawing Dots and Lines
In the first chapter, I discussed how the Windows Graphics Device Interface makes use of device drivers for the graphics output devices attached to your computer. In theory, all that a graphics device driver needs for drawing is a SetPixel function and a GetPixel function. Everything else could be handled with higher-level routines implemented in the GDI module. Drawing a line, for instance, simply requires that GDI call the SetPixel routine numerous times, adjusting the x- and y-coordinates appropriately.
In reality, you can indeed do almost any drawing you need with only SetPixel and GetPixel functions. You can also design a neat and well-structured graphics programming system on top of these functions. The only problem ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.