#include <FlashRuntimeExtensions.h>

extern "C"
{
    __declspec(dllexport) void ExtensionInitializer(void** extData, FREContextInitializer* ctxInitializer, FREContextFinalizer* ctxFinalizer)
    {
        *ctxInitializer = &contextInitializer; // The name of function that will intialize the extension context
        *ctxFinalizer = &contextFinalizer; // The name of function that will finalize the extension context
    }

    __declspec(dllexport) void ExtensionFinalizer(void* extData)
    {
        return;
    }
}

void contextInitializer(
    void                     * extData,
    const uint8_t            * ctxType,
    FREContext                 ctx,
    uint32_t                 * numFunctionsToSet,
    const FRENamedFunction  ** functionsToSet )
{
    // Create mapping between function names and pointers in an array of FRENamedFunction.
    // These are the functions that you will call from ActionScript -
    // effectively the interface of your native library.
    // Each member of the array contains the following information:
    // { function name as it will be called from ActionScript,
    //   any data that should be passed to the function,
    //   a pointer to the implementation of the function in the native library }
    static FRENamedFunction extensionFunctions[] =
    {
        { (const uint8_t*) "as_passAString",        NULL, &ASPassAString }
    };

    // Tell AIR how many functions there are in the array:
    *numFunctionsToSet = sizeof( extensionFunctions ) / sizeof( FRENamedFunction );

    // Set the output parameter to point to the array we filled in:
    *functionsToSet = extensionFunctions;
}

void contextFinalizer(FREContext ctx)
{
    return;
}

FREObject ASPassAString( FREContext ctx, void* funcData, uint32_t argc, FREObject argv[] )
{
    // What this function does: reads a string passed in from ActionScript,
    // outputs it to the console, then sends it back to ActionScript.

    // This enumerator helps keep track of the parameters
    // we expect from ActionScript and their order.
    // Not technically necessary, but a good habit:
    // saves you havhavnig to remember which parameter you should access as argv[ 3 ].
    enum
    {
        ARG_STRING_ARGUMENT = 0,

        ARG_COUNT
    };

    // Another good habit, though not a requirement:
    // ARG_COUNT will have the value of the number of arguments you expect.
    // The assertion will fire (in a debug build) to tell you
    // if you mistakenly passed the wrong number of arguments
    // from ActionScritpt.
    assert( ARG_COUNT == argc );

    // Read the ActionScript String object, packed here as a FREObject,
    // into a character array:
    uint32_t strLength = 0;
    const uint8_t * nativeCharArray = NULL;
    FREResult status = FREGetObjectAsUTF8( argv[ ARG_STRING_ARGUMENT ], &strLength, &nativeCharArray );

    FREObject retObj;

    if ( ( FRE_OK == status ) && ( 0 < strLength ) && ( NULL != nativeCharArray ) )
    {
        // Read the characters into a c string...
        std::string nativeString( ( const char * ) nativeCharArray );

        // ...and output it into the console to see what we received:
        std::stringstream  stros;
        stros << "This is the string we received from ActionScript: ";
        stros << nativeString;

        // Now let's put the characters back into a FREObject...
        FRENewObjectFromUTF8( strLength, nativeCharArray, &retObj );
    }

    // ... and send them back to ActionScript:
    return retObj;
}

#include <string>
#include <assert.h>
#include <sstream>

1>------ Build started: Project: DiaDrawWindowsANETutorialDLL, Configuration: Debug Win32 ------
1>  dllMain.cpp
1>     Creating library C:\Users\radoslava\dev\Windows ANE Template\NativeExtension\NativeLibrary\win\DiaDrawWindowsANETutorialDLL\Debug\DiaDrawWindowsANETutorialDLL.lib and object C:\Users\radoslava\dev\Windows ANE Template\NativeExtension\NativeLibrary\win\DiaDrawWindowsANETutorialDLL\Debug\DiaDrawWindowsANETutorialDLL.exp
1>  DiaDrawWindowsANETutorialDLL.vcxproj -> C:\Users\radoslava\dev\Windows ANE Template\NativeExtension\NativeLibrary\win\DiaDrawWindowsANETutorialDLL\Debug\DiaDrawWindowsANETutorialDLL.dll
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========