Class CTrayIcon

cppcryptfs/ui/TrayIcon.h:85–160

//A Simple and fast Tray Icon Application class.

class CTrayIcon : public CWnd {
public:
  // disallow copying
  CTrayIcon(CTrayIcon const&) = delete;
  void operator=(CTrayIcon const&) = delete;

  CTrayIcon() {}
  CTrayIcon(LPCTSTR szTip, HICON hIcon) {Create(szTip, hIcon);}
  virtual ~CTrayIcon() {
    RemoveIcon();
    DestroyWindow();
  }

  CString GetTooltipText() const {return NID.szTip;}
  BOOL SetTooltipText(LPCTSTR szTip){
    if(!OK) return FALSE;
    NID.uFlags=NIF_TIP;
	wcscpy_s(NID.szTip, sizeof(NID.szTip) / sizeof(NID.szTip[0]), szTip);
    return Shell_NotifyIcon(NIM_MODIFY, &NID);
  }

  HICON GetIcon() const {return NID.hIcon;}
  BOOL SetIcon(HICON hIcon) {
    if(!OK) return FALSE;
    NID.uFlags=NIF_ICON;
    NID.hIcon=hIcon;
    return Shell_NotifyIcon(NIM_MODIFY, &NID);
  }

protected:
  BOOL OK; // true if the operating system supports tray icons and the Icon was successfully created
  NOTIFYICONDATA NID;

// Operations
  BOOL Create(LPCTSTR szTip, HICON hIcon, UINT Menu=0) { //Menu may be used by derived classes
    //VERIFY(OK=(GetVersion() & 0xFF)>=4); // this is only for Windows 95 (or higher)
	OK = TRUE;
    if(OK) {
      ASSERT(_tcslen(szTip)<=64); // Tray only supports tooltip text up to 64 characters
    // Create this invisible window for Message passing
      CWnd::CreateEx(0, AfxRegisterWndClass(0), _T(""), WS_POPUP, 0,0,10,10, 0, 0);
      memset(&NID, 0, sizeof(NID));
      NID.cbSize=sizeof(NOTIFYICONDATA);
      NID.hWnd  =m_hWnd;//pParent->GetSafeHwnd()? pParent->GetSafeHwnd() : m_hWnd;
      NID.uID   =Menu;
      NID.hIcon =hIcon;
      NID.uFlags=NIF_MESSAGE | NIF_ICON | NIF_TIP;
      NID.uCallbackMessage=RegisterWindowMessage(L"CTrayIcon");
	  wcscpy_s(NID.szTip, sizeof(NID.szTip) / sizeof(NID.szTip[0]), szTip);
      VERIFY(OK=Shell_NotifyIcon(NIM_ADD, &NID));
    }
    if(!OK) memset(&NID, 0, sizeof(NID));
    return OK;
  }

  void RemoveIcon() {
    if(!OK) return;
    NID.uFlags=0;