April 2002
Beginner
413 pages
10h 46m
English
Content preview from Sams Teach Yourself Visual C++® .NET in 24 HoursBecome 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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Specifying Specific Data Types for Marshaling
If you looked at the DisplayTime function shown in Listing 22.2, you ran across a few items that haven't been discussed yet. As mentioned earlier, the common language runtime will use data types that are compatible with one another when marshaling data between managed and unmanaged code. However, the String object can be represented by several different native C data types. If you need to call a function contained within an unmanaged DLL that contains different data types the String object could represent, you must use the MarshalAs attribute when creating the function definition. An example of one of these functions is the MultiByteToWideChar function, which is used to convert a single- or multibyte ...
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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.
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.