cannot pass RenderWindow object by const reference

[iride]

I have a game object that receives reference to RenderWindow object
And this game.draw passes the const reference to window further down to menu object also as a const reference

game.draw(const sf::RenderWindow & r)
{
   menu.draw(r);
}

Using the window reference, menu object draws some stuff.

menu.draw(const sf::RenderWindow & r)
{
    r.draw(/*draw some stuff here*/);
}

when I try to pass the window object by const reference I get an error
"overloads have no legal conversion for 'this' pointer"

Why can't I do this?

[eXpl0it3r]

Does it work without the const keyword?

You may also think about deriving your classes from sf::Drawable to get a imho nicer API call (window.draw(obj)).

[Laurent]

RenderWindow::draw is not const, therefore you can't call it on a const object.