Is there a command to hide an image rather than drawing something over the top of it? I know of a command to set a button's visability and I figured since they are both members of irr::GUI they might share this command.
If your image is a irr::gui::IGUIImage gui element, it should be possible to make it in invisble using the irr::gui::IGUIElement::setVisible( false) function.
But if you image is a texture, just don't draw it.
How do you specify to the engine not to draw something? From what I have seen you only need to specify once to the engine to draw the image and it does it automatically, is there a way around this?