uses Registry; //引用Registry单元
var //定义变量
r: TRegistry;
s: string;
begin
r:= TRegistry.Create;
r.RootKey:= HKEY_LOCAL_MACHINE;
if r.OpenKey('SOFTWARE\microsoft\windows', false) then
begin
s:= r.ReadString('UserName');
r.WriteString('UserName', 'New User' + s);
end;
r.CloseKey;
r.Free;
end;
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