How do I define a struct in C++/CX with an array

Question

This following works fine:

public value struct Foo {
    Platform::String^ Name; 
    Platform::String^ Type;
};

However, when I tried to add an Platform::Array<double>^ as the following, I will get an error message.

public value struct Foo {
    Platform::String^ Name; 
    Platform::String^ Type;
    const Platform::Array<double>^ Value; 
};

Error message:

signature of public member contains invalid type 'const Platform::Array<double,1> ^

I also tried this const Platform::Array<Platform::String^>^ Values. But I will have similar error message:

signature of public member contains invalid type 'const Platform::Array<Platform::String ^,1> ^'

What does this mean? And how do I fix this?

Edit: Have to use class in this case since value struct can contain as fields only fundamental numeric types, enum classes, or Platform::String^.

public ref class Foo sealed {
    property Platform::String^ Name;
    property Platform::String^ Type;
    property Platform::Array<Platform::String^>^ Values;    
};

Have you seen [this answer](http://stackoverflow.com/a/14588173/1896761)? — Austin Mullins, Sep 21 '15 at 21:48

score 1 · Accepted Answer · edited May 23 '17 at 12:29

1

A WinRT value struct (or value class) can only contain primitive types (numbers, strings, etc.) [source]. It cannot contain arrays or reference types (other than IReference<T>).

Thanks to @Yuchen for an edit.

edited May 23 '17 at 12:29

Community

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answered Sep 22 '15 at 00:12

Peter Torr - MSFT

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How do I define a struct in C++/CX with an array

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