Changes

The section of this window that is of interest to us is the area entitled Autosizing and in particular the white box on the left. The outer box represents the superview and the inner box represents the subview that is contained within the superview. Any autosizing settings that are configured on a subview are relative to the superview. Within the subview box are two intersecting lines with arrows at each end. These vertical and horizontal lines indicate whether the height and width of the selected view object should increase or decrease in proportion to size changes in the corresponding superview. A faint dotted line indicates that the currently selected view object is not to resize in relation to the superview. A solid red line, on the other hand, indicates that it should resize proportionally to the parent view. The graphic to the right of the white box provides a visual representation of how the view will behave based on the current settings. The red box represents the subview and the white box represents the containing superview. Click on the horizontal line to change it to solid red and see how the width of the red box representing the button grows and shrinks as the containing superview size changes. Similarly, enable resizing for the height of the button and observe how the height of the button also now changes proportionally to the superview:

[[Image:iphone_view_autosize_height_width.jpg|The Interface Builder Size Inspector Autosizing section]]