问题描述
谁能解释C#中BitmapData类的 Scan0 和 Stride 属性是做什么的?
Can anyone explain what Scan0 and Stride properties of BitmapData class in C# are for?
推荐答案
您是否在谈论 BitmapData 类?如果是这样，我认为文档中的描述相当清楚:
Are you talking about the BitmapData class? If so, the description in the documentation is reasonably clear, I think:
Scan0 :
换句话说，这使您可以找到要检查或更改的数据-甚至可以将位图制作为完全不同的数据.
In other words, this lets you find the data to examine or change - or even lets you make the bitmap to a completely different piece of data.
Stride :
如果要从一行移到另一行，则需要将跨步添加到当前正在查看的行的地址.行与4个字节的边界对齐，以便所有类型的代码都可以更有效地访问它. (对CPU中的各种操作进行了优化，使其可以在4字节或8字节边界上工作.)
If you want to move from one row to the next, you need to add the stride to the address of the row you're currently looking at. Rows are aligned to 4 byte boundaries so that all kinds of code can access it more efficiently. (Various operations in CPUs are optimized to work on 4 byte or 8 byte boundaries.)
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