FPCM_TGETPROPERTYNUM

struct SFPCTGetPropertyNum
{
    // [in]
    struct
    {
        LPCTSTR lpszBuffer;

    } target;

    // [in]
    int property;

    // [out]
    double Result;

    // [out]
    HRESULT hr;
};

void InvokeTGetPropertyNum(HWND hwndFlashPlayerControl, LPCTSTR target, int property)
{
    SFPCTGetPropertyNum info;


    info.target.lpszBuffer = target;

    info.property = property;


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


    if FAILED(info.hr)
        // Error
    {
            // ...
    }
    else
        // OK
    {
        TCHAR lpszBuffer[1024];

        wsprintf(lpszBuffer, _T("%d"), info.Result);

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