Delphi常用函數總結

function RightStr
(Const Str: String; Size: Word): String;
begin
if Size > Length(Str) then Size := Length(Str) ;
RightStr := Copy(Str, Length(Str)-Size+1, Size)
end;
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function MidStr
(Const Str: String; From, Size: Word): String;
begin
MidStr := Copy(Str, From, Size)
end;
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function LeftStr
(Const Str: String; Size: Word): String;
begin
LeftStr := Copy(Str, 1, Size)
end;