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| Title:
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Unicode tip #6 - Character Literals
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| Author:
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Bob Swart |
| Posted:
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12/1/2008 5:38:28 PM
(GMT+1)
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| Content:
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Character literals between #128 and #255 – the so-called high ASCII values – have a specific value depending on the ANSI code page. As a result, we should not use the #128..#255 character literals, but use the actual characters themselves which will end up as Unicode characters in the source code.
(*$HIGHCHARUNICODE OFF*)
With the HIGHCHARUNICODE set to OFF, we can define the high-ASCII values without them turning into Unicode characters.
(*$HIGHCHARUNICODE OFF*)
var
C: AnsiChar;
begin
C := #128;
Without turning HIGHCHARUNICODE OFF, we would get a warning that the #128 character, actually WideChar constant #$0080 (based on the current active code page), would have to be narrowed from WideChar to AnsiChar.
This tip is the 6th in a series of Unicode tips taken from my Delphi 2009 Development Essentials book published earlier this week on Lulu.com.
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