Coding in London: November 2006

I know how to call unmanaged code from a managed class. How to do the opposite? This piece of code

    public class DiagramContainer

    private:

        // Managed reference to some data

        Rigging^ m_rigging;

};

returns the following error: Error 1 error C3265: cannot declare a managed 'm_rigging' in an unmanaged 'MFCControls::DiagramContainer' Hints: http://www.ondotnet.com/pub/a/dotnet/2003/03/03/mcppp2.html?page=last Solution: Use gcroot

    public class DiagramContainer

    private:

        // Managed reference to some data. gcroot makes it look like an unmanaged type

        gcroot<rigging^ > m_rigging;

};

m_rigging can be used as a usual Rigging^ object. You reach the members using ->

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