CODEWITHSUNDEEP
c++-cli
MJ Richardson
MJ Richardson

Reputation: 1441

C++\CLI generic class with method returning indirection to the generic type parameter

I have a generic class written in C++\CLI, which contains a method returning an instance of the generic type parameter:

generic<typename TWidget> public ref class Factory abstract
{
    public:
       virtual TWidget^ MakeWidget() abstract;
}

My generic type (TWidget) will be a reference type, and so I wish my method (MakeWidget) to return an indirection to the type. Compilation fails with the error

error C3229: 'TWidget ^' : indirections on a generic type parameter are not allowed

Surely this is not an unusual scenario; am I mis-understanding something? (entirely possible as I rarely use this language).

Any suggestions as to how I can appease the compiler and achieve the desired result?

Upvotes: 0

Views: 1302

Answers (1)

elyuro
elyuro

Reputation: 91

Because your TWidget type is already a reference type, and in fact, the compiler will force you to make it so, you can simply define the return of MakeWidget as TWidget.

Upvotes: 2

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