October 2003
Intermediate to advanced
736 pages
15h 25m
English
Content preview from Windows Forms Programming in Visual Basic .NETBecome 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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Optimized Drawing
If you're drawing using page units, transformations, and regions, it's likely that you're heavy into drawing. If that's the case, you'll be interested in ways to optimize your drawings for responsiveness and smooth operation. First and foremost, you'll want to avoid drawing anything that doesn't need drawing. You can do that in one of two ways: redraw only what needs to be redrawn, or don't draw unnecessarily in the first place.
First, invalidate only the portion of your drawing surface that needs to be refreshed. In other words, when drawing the internal state of your form or control, don't invalidate the whole thing if only a small part of the state has changed:
Dim lotsOfNumbers() As Single Function GetRegionWhereNumberIsShow(number ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
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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.