为什么有些字符常量1字节宽，而另一些2字节宽？ [英] Why are some character constants 1 byte wide, and others 2 bytes wide?

问题描述

我以为我开始了解Unicode，但这使我不胜枚举：

I thought I was beginning to understand Unicode, but this beats me:

const
c1 = #1;   --> SizeOf() = 2
c2 = #33;  --> SizeOf() = 2
c3 = #127; --> SizeOf() = 2
c4 = #128; --> SizeOf() = 1
c5 = #160; --> SizeOf() = 1 
c6 = #161; --> SizeOf() = 1 
c7 = #255; --> SizeOf() = 1 

有人可以解释吗？
Delphi XE2，默认Windows-1252代码页

Can anyone explain? Delphi XE2, Default Windows-1252 codepage

感谢
Jan

Thanks Jan

推荐答案

已记录-请参见 $ HIGHCHARUNICODE 指令

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