FPCM_GET_EMBEDMOVIE
FPCM_PUT_EMBEDMOVIE

struct SFPCGetEmbedMovie
{    
    // [out]
    VARIANT_BOOL EmbedMovie;

    // [out]
    HRESULT hr;
};


struct SFPCPutEmbedMovie
{
    // [in]
    VARIANT_BOOL EmbedMovie;

    // [out]
    HRESULT hr;
};

void GetEmbedMovie(HWND hwndFlashPlayerControl)
{
    SFPCGetEmbedMovie info;

    ::SendMessage(hwndFlashPlayerControl, FPCM_GET_EMBEDMOVIE, 0, (LPARAM)&info);

    if FAILED(info.hr)
        // Error
    {
        // ...
    }
    else
        // OK
    {
        TCHAR lpszBuffer[1024];
        wsprintf(lpszBuffer, _T("%d"), info.EmbedMovie);

        ::MessageBox(NULL, lpszBuffer, _T("Result"), MB_OK);
    }
}


void PutEmbedMovie(HWND hwndFlashPlayerControl, VARIANT_BOOL EmbedMovie)
{
    SFPCPutEmbedMovie info;

    info.EmbedMovie = EmbedMovie;

    ::SendMessage(hwndFlashPlayerControl, FPCM_PUT_EMBEDMOVIE, 0, (LPARAM)&info);

    if FAILED(info.hr)
        // Error
    {
        // ...
    }
    else
        // OK
    {
        // ...
    }
}