addEvent and function of class

[Xardas0327]

Code:

class Menu
{
    constructor()
    {
          addEvent("onClick", login);
           show();
    }
    
    function show()
    {
         setCursorVisible(true);
    }
    
    function hide()
    {
         setCursorVisible(false);
       }
    
    function login(button, x, y, wheel)
    {
        hide();
    }
}

If I use this class, the error: hide() is not exist.

what's wrong? Is it impossible?