SysUtils.CompareStr、SysUtils.CompareText - 字符串比较

CompareStr 区分大小写; CompareText 不区分大小写. 举例:

---

var
  s1,s2: string;
  i: Integer;
begin
  s1 := 'abc';
  s2 := 'adc';
  i := CompareStr(s1,s2);
  ShowMessage(IntToStr(i));  {-2}

  i := CompareText(s1,s2);
  ShowMessage(IntToStr(i));  {-2}

  s1 := 'abc';
  s2 := 'ABC';
  i := CompareStr(s1,s2);    {CompareStr 区分大小写}
  ShowMessage(IntToStr(i));  {32}

  i := CompareText(s1,s2);   {CompareText 不区分大小写}
  ShowMessage(IntToStr(i));  {0}
end;

SysUtils 单元下的公用函数目录

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