OnProgress

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)  
{  
...  
    case WM_NOTIFY:  
    {  
        NMHDR* pNMHDR = (NMHDR*)lParam;  
  
        if (hwndFlashPlayerControl == pNMHDR->hwndFrom)  
        {  
            switch (pNMHDR->code)  
            {  
                case FPCN_ONPROGRESS:  
                {  
                    SFPCOnProgressInfoStruct* pInfo = (SFPCOnProgressInfoStruct*)lParam;  
  
                    TCHAR lpszBuffer[1024];  
                    _sntprintf(lpszBuffer, sizeof(lpszBuffer) - 1, _T("percentDone: %d"), pInfo->percentDone);  
  
                    MessageBox(hWnd, lpszBuffer, _T("OnProgress()"), MB_OK | MB_ICONINFORMATION);  
  
                    break;  
                }  
            }  
        }  
    }  
}