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c++-cli

How to use Nullable types in c++/cli?

I have the following code, which I thought would work:

property Nullable<double> Angle {
    Nullable<double> get() {
        return nullptr;
    }
}

It doesn't. How can I do it? Does c++/CLI even support nullable types?

Solution

  • OK, found it, after a lot of hassle:

    to return null, just do

    return Nullable<double>();

    to return non-null:

    return Nullable<double>(12321);

    It is important to declare the return value as Nullable<double> and not Nullable<double>^, as if you do it, when using other languages as C# and vb.net, you'll see the type as ValueType instead of double?.