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Asked: 2026-05-10T18:27:11+00:00

I’m trying to build a new .NET C++ project from scratch. I am planning

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I’m trying to build a new .NET C++ project from scratch. I am planning to mix managed and unmanaged code in this project.

this forum thread IDataObject : ambiguous symbol error answers a problem I’ve seen multiple times.

Post #4 states ‘Move all ‘using namespace XXXX’ from .h to .cpp’

this looks like a good idea but now in my header files I need to reference parameters from the .NET Framework like

void loadConfigurations(String^ pPathname);

How am I supposed to move using statements in the .cpp file and use the according namespaces in the .h file?

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1 Answer

  1. It’s a good idea to always use fully qualified names in header files. Because the using statement affects all following code regardless of #include, putting a using statement in a header file affects everybody that might include that header.

    So you would change your function declaration in your header file to:

    void loadConfigurations(SomeNamespace::String^ pPathname);

    where SomeNamespace is the name of the namespace you were using previously.

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