U++

Application should be able to send system notification without the need of use TrayIcon class.

class TrayIcon {

    void            Info(const char *title, const char *text, int timeout = 10)    { Message(1, title, text, timeout); }
    void            Warning(const char *title, const char *text, int timeout = 10) { Message(2, title, text, timeout); }
    void            Error(const char *title, const char *text, int timeout = 10)   { Message(3, title, text, timeout); }

};

So, this can be moved to CtrlCore as a separate method class like:

class Notification final {
public:
    Notification() = delete;

    static Info(...) {...}
}