procedure TForm1.Button1Click(Sender: TObject);
var
Dir, FileTitle, FileExt: string;
s,s1: string;
j:Integer;
begin
Dir := 'C:\';
FileTitle := '新建 文本文档';
FileExt := '.txt';
s1:=Dir+FileTitle+FileExt;
j:=2;
if FileExists(s1) then //C:\新建 文本文档.txt
begin
s:=Format('%s%s(%d)%s', [dir, FileTitle, j, FileExt]);
while FileExists(s) do
begin
Inc(j);
s := Format('%s%s(%d)%s', [dir, FileTitle, j, FileExt]);
end;
if not FileExists(s) then Memo1.Lines.SaveToFile(s);
end
else
Memo1.Lines.SaveToFile(s1);
end;
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