Why do you want to add some corners for resizing? Every plasmoid which hasn't got fixed proportions already has a frame, which may be the resizing handler. In plasmoids with fixed proportions such as the analog clock, there's no need to add new way of resizing, so there's no need to add a frame.
Why do you want to add some corners for resizing? Every plasmoid which hasn't got fixed proportions already has a frame, which may be the resizing handler. In plasmoids with fixed proportions such as the analog clock, there's no need to add new way of resizing, so there's no need to add a frame.