Fullscreen adds the fullscreen button that, when pressed, will smoothly animate the window to fullscreen status. The window can be restored to its previous state by clicking the upper right-hand part of the screen and locating the button in the menubar. This package has no relationship to the standard Tk command "wm attributes $w -fullscreen 1," which also implements a fullscreen window and tracks its state internally through Tk. Under OS X, the "wm attributes" command uses different API's and its state can be tracked and configured via Tk. The "::fullscreen::fullscreen" only adds the fullscreen button to the window, and does not track the window's state; setting the window to fullscreen state is triggered by the user. The benefit of this command is that it provides better integration with modern Mac API's.
What is new in this release:
This package adds native a "fullscreen" button to Tk windows on Mac OS X 10.7 and later. The ::fullscreen::fullscreen command implements a Cocoa-native fullscreen button that, when pressed, will move the window to fullscreen status. The window can be restored to its previous state by clicking the "resize" icon in the application menu. This command is implemented internally by overriding the native Cocoa fullscreen API to generate a "ToggleFullScreen" virtual event, which is then passed to Tcl to map the fullscreen status to the window via the "wm attributes $w -fullscreen" command. This ensures smoother integration between Tk and Cocoa by working with a standard Tk mechanism, but does not work identically to fully-native Cocoa fullscreen implementations. Earlier implementations of the fullscreen attempted to provide a fully-native Cocoa implementation, but it was highly-complex and prone to crashing.
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