Catherine,

I assume that by "raising an event" you mean invoking a delegate? The
following code shows how you can invoke a delegate in unmanaged code:

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#using <mscorlib.dll>

using namespace System;

__delegate void TestEventHandler();

class UnmanagedClass {
public:
    void doSomething(TestEventHandler *testEventHandler);
};

void UnmanagedClass::doSomething(TestEventHandler *testEventHandler) {
    testEventHandler->Invoke();
}

__gc class ManagedClass {
public private:
    void testEventOccurred() {
        Console::WriteLine(S"It happened!");
    }
};

int _tmain()
{
    UnmanagedClass unmanagedClass;
    ManagedClass *managedClass = new ManagedClass();
    unmanagedClass.doSomething(new TestEventHandler(managedClass,
        ManagedClass::testEventOccurred));
    return 0;
}
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