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Compiler Error C3734

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'class': a managed or WinRT class cannot be a coclass

The coclass attribute cannot be used with managed or WinRT classes.

The following sample generates C3734 and shows how to fix it:

// C3734.cpp
// compile with: /clr /c
[module(name="x")];

[coclass]
ref class CMyClass {   // C3734 remove the ref keyword to resolve
};