从给定字符串中截取n个字节的字符(解决汉字截取乱码问题)

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function GetNBytesChar(s: Ansistring; n: Integer): string;
var
  aStr: AnsiString;
  bStr: WideString;
begin
  aStr := Copy(s, 1, n);
  bStr := aStr;
  if aStr = bStr then
    Result := astr
  else
    Result := Copy(s, 1, n-1);
end;

转载于:https://my.oschina.net/u/582827/blog/544487

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