Unity3d GUI Automatic Layout

The GUI mode adopted by unity is the instant mode, which is quite different from the message-based mode similar to Windows. It is very convenient to use the guilayout class in Gui layout. However, it should be noted that the ongui function execution cycle is faster than update. That is to say, one frame may be called multiple times, for example, each mouse event will be called once, therefore, reduce the number of operations in the ongui function as much as possible. Improve efficiency. Guilayout works with guilayoututility. when getlastrect () is used to obtain the coordinates of the layout space on the screen, note that if it is not in the event. current. when type is not a repaint event, the obtained rectangular area is (,). If this is ignoredCodeThis may cause inexplicable errors.