Time to look at the mysterious 'borderView' object, used by the Cocoa libraries to render a window to the screen. Although you'll not often need the specialised facilities provided by the border view, they can be very useful when creating certain kinds of application. Here's a little experiment you can try. In xCode, create a …
Death to developers who don't allow window resizing or closing!
My thoughts exactly!
Death is too good for them.
They should be sat in front of a screen in a locked, slowly flooding room with the instructions on how to get out of the room in a non-resizable window with the key part of the instructions just below the bottom of the page.
But, but, but.....you've got to agree that *some* windows don't ever need to be resizable. Personally, I think it's a good thing that the underlying system offers this flexibility: look at the various preferences pages in (e.g.) Apple's Mail application: some are resizable, some ain't.
Remember: we're not talking specifically about an app's main window.