BOOL CMultiPlayerDlg::OnInitDialog()
  {
      CDialog::OnInitDialog();
  
      // Add "About..." menu item to system menu.
  
      // IDM_ABOUTBOX must be in the system command range.
      ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
      ASSERT(IDM_ABOUTBOX < 0xF000);
  
      CMenu* pSysMenu = GetSystemMenu(FALSE);
      if (pSysMenu != NULL)
      {
          CString strAboutMenu;
          strAboutMenu.LoadString(IDS_ABOUTBOX);
          if (!strAboutMenu.IsEmpty())
          {
              pSysMenu->AppendMenu(MF_SEPARATOR);
              pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
          }
      }
  
      // Set the icon for this dialog.  The framework does this automatically
      //  when the application's main window is not a dialog
      SetIcon(m_hIcon, TRUE);         // Set big icon
      SetIcon(m_hIcon, FALSE);        // Set small icon
  
      // set sliders
      m_sliderAlpha.SetRange(0,100,TRUE);
      m_sliderTime.SetRange(0,100,TRUE);
      m_sliderXPos.SetRange(-100,100,TRUE);
      m_sliderXSize.SetRange(-100,100,TRUE);
      m_sliderYPos.SetRange(-100,100,TRUE);
      m_sliderYSize.SetRange(-100,100,TRUE);
      m_sliderZOrder.SetRange(0,1,TRUE);
      m_sliderFPS.SetRange(0,100,TRUE);
  
      m_sliderAlpha.SetTicFreq(5);
      m_sliderTime.SetTicFreq(5);
      m_sliderXPos.SetTicFreq(10);
      m_sliderYPos.SetTicFreq(10);
      m_sliderXSize.SetTicFreq(10);
      m_sliderYSize.SetTicFreq(10);
      m_sliderFPS.SetTicFreq(5);
  
      HINSTANCE hInst = AfxGetInstanceHandle();
      m_bmpAttach = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_ATTACH));
      m_bmpAttachGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_ATTACH_DISABLE));
      m_bmpDetach = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_DETACH));
      m_bmpDetachGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_DETACH_DISABLE));
      m_bmpPlay = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_PLAY));
      m_bmpPlayGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_PLAY_DISABLE));
      m_bmpPause = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_PAUSE));
      m_bmpPauseGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_PAUSE_DISABLE));
      m_bmpScale = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_SCALE));
      m_bmpScaleGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_SCALE_DISABLE));
      m_bmpColor = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_COLOR));
      m_bmpColorGray = LoadBitmap( hInst, MAKEINTRESOURCE(IDB_BITMAP_COLOR_DISABLE));
  
      m_nTimer = SetTimer( g_TimerID, 500, 0);
      SetWindowPos(NULL,1,1,0,0,SWP_NOOWNERZORDER|SWP_NOSIZE);
      UpdateWindow();
  
      m_pSession = new CMultiPlayerSession;
      if( !m_pSession )
      {
          AfxMessageBox(_T("Memory allocation error"),MB_OK,0);
          return FALSE;
      }
  
      HRESULT hr = m_pSession->Initialize();
      if( FAILED(hr))
      {
          AfxMessageBox(_T("Failed to create MultiVMR9Wizard object.\r\nMake sure you have registered MultiVMR9.dll"),MB_OK,0);
          return FALSE;
      }
  
      UpdateMediaButtons_();
      UpdateState_();
      UpdateSubgraphInfo_();
  
      UINT uintIDs[] = 
      {
          IDC_BUTTON_ATTACH,
          IDC_BUTTON_DETACH,
          IDC_BUTTON_PLAY,
          IDC_BUTTON_PAUSE,
          IDC_BUTTON_FIT,
          IDC_BUTTON_COLOR
      };
  
      UINT uintTips[] = 
      {
          IDS_TT_ADD,
          IDS_TT_DETACH,
          IDS_TT_PLAY,
          IDS_TT_PAUSE,
          IDS_TT_FIT,
          IDS_TT_BKCOLOR
      };
  
      // initialize tool tips
      for( int i=0; i< g_nButtons; i++ )
      {
          m_hwndToolTips[i] = ::CreateWindow(TOOLTIPS_CLASS, NULL,
                                           WS_POPUP | TTS_NOPREFIX,
                                           0, 0, 0, 0, NULL, NULL, g_hInstance, NULL );
          if( m_hwndToolTips[i] )
          {
              ::SetWindowPos( m_hwndToolTips[i], HWND_TOPMOST, 0,0,0,0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE );
              HWND hwndBtn = ::GetDlgItem( GetSafeHwnd(), uintIDs[i]);
              if( !IsWindow( hwndBtn ) )
              {
                  continue;
              }
  
              m_ti[i].cbSize = sizeof( TOOLINFO );
              m_ti[i].uFlags = TTF_TRANSPARENT | TTF_CENTERTIP | TTF_SUBCLASS | TTF_IDISHWND;
              m_ti[i].hwnd = hwndBtn;
              m_ti[i].uId =  (UINT_PTR)hwndBtn;
              m_ti[i].hinst = g_hInstance;
              m_ti[i].lpszText =MAKEINTRESOURCE(uintTips[i]);
              ::GetClientRect( m_hwndToolTips[i], &(m_ti[i].rect));
              LRESULT lRes = ::SendMessage( m_hwndToolTips[i], TTM_ADDTOOL, 0, (LPARAM)&(m_ti[i]) );
          } // if
      }// for
  
      //m_ToolTips.Activate( TRUE );
      
      //SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOSIZE);
  
      return TRUE;  // return TRUE  unless you set the focus to a control
  }