title: Display balloon tooltip in systemtray
body: <p>this is my code.. </p>
  
  <p>set trayicon 
  .......</p>
  
  <pre><code>NOTIFYICONDATA data;//this is global variable.
  case WM_CREATE :
  data.cbSize = sizeof(NOTIFYICONDATA);
  data.hWnd =hWnd;
  data.uID = IDR_MAINFRAME;
  data.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
  data.uCallbackMessage = ID_TRAYICON_NOTIFY;
  data.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_INFO));
  
  wcscpy_s(data.szTip,128,a);
  
  Shell_NotifyIcon( NIM_ADD, &amp;data );
  </code></pre>
  
  <p>........</p>
  
  <p>and set balloon
  ......</p>
  
  <pre><code>case WM_RBUTTONDBLCLK:
  data.hWnd = hWnd;
  data.cbSize =sizeof(NOTIFYICONDATA);
  data.hIcon =  LoadIcon(hInst, MAKEINTRESOURCE(IDI_INFO));
  data.uTimeout = 5000;
  data.uFlags = NIF_INFO;
  data.dwInfoFlags = NIIF_INFO;
  _tcscpy_s(data.szInfoTitle,_T("TITLE"));
  _tcscpy_s(data.szInfo,_T("SOME TEXT"));
  Shell_NotifyIcon(NIM_MODIFY,&amp;data);
  </code></pre>
  
  <p>.......</p>
  
  <p>but, can't show balloon tooltip</p>
  
  <p>plz teach me.</p>