Programmatically extract macro (VBA) code from Word 2007 docs

Is it possible to extract all of the VBA code from a Word 2007 "docm" document using the API?

I have found how to insert VBA code at runtime, and how to delete all VBA code, but not pull the actual code out into a stream or string that I can store (and insert into other documents in the future).

Any tips or resources would be appreciated.

Edit: thanks to everyone, Aardvark's answer was exactly what I was looking for. I have converted his code to C#, and was able to call it from a class library using Visual Studio 2008.

using Microsoft.Office.Interop.Word;
using Microsoft.Vbe.Interop;

...

public List<string> GetMacrosFromDoc()
{
    Document doc = GetWordDoc(@"C:\Temp\test.docm");

    List<string> macros = new List<string>();

    VBProject prj;
    CodeModule code;
    string composedFile;

    prj = doc.VBProject;
    foreach (VBComponent comp in prj.VBComponents)
    {
        code = comp.CodeModule;

        // Put the name of the code module at the top
        composedFile = comp.Name + Environment.NewLine;

        // Loop through the (1-indexed) lines
        for (int i = 0; i < code.CountOfLines; i++)
        {
            composedFile += code.get_Lines(i + 1, 1) + Environment.NewLine;
        }

        // Add the macro to the list
        macros.Add(composedFile);
    }

    CloseDoc(doc);

    return macros;
}