When I'm in the application "Eclipse" (its a c/c++ developing enviroment) I accidentally zoomed out using "ctrl" + "-". now when im trying to zoom out by using "ctrl" + "+", nothing happens at all. I have also tried using "ctrl" + "0" to reset the zoom and "ctrl + "mousewheel" to change the zoom. But both do not work. why is it that zooming out with the ctrl key works, but nothing else does?