Implicit conversion

[Jiyan via Digitalmars-d-learn]

Hello,

I want to convert from ints implicit to a struct type, so for 
example:

struct use
{
        int x;

        int toInt()
        {
                return x;
        }

        use fromInt(int v)
        {
                return use(v);
        }

        alias toInt this; // implicit conversion to int value

        this(int v)
        {x = v;}
}

void useP(int v)
{
        v.writeln;
}

void useV(use v)
{
        v.writeln;
}

void main(string[] args)
{
        use a = use(2);
        //useP(a);
        useV(2); // how can i let this work?
}

Thanks :)