Instance Method


Sets the window’s location to the center of the screen.


- (void)center;


The window is placed exactly in the center horizontally and somewhat above center vertically. Such a placement carries a certain visual immediacy and importance. This method doesn’t put the window onscreen, however; use makeKeyAndOrderFront: to do that.

You typically use this method to place a window—most likely an alert dialog—where the user can’t miss it. This method is invoked automatically when a panel is placed on the screen by the runModalForWindow: method of the NSApplication class.

See Also

Moving Windows


A Boolean value that indicates whether the window is movable by clicking and dragging anywhere in its background.


A Boolean value that indicates whether the window can be dragged by clicking in its title bar or background.