General (screen.h)Constants and Datatypes which are available for multiple Screen and Windowing API objects.Related linksScreen and Windowing Library Reference Two important aspects to note when using Screen and Windowing are Function safety and Function execution types. Constants in screen.h Constants that are available for multiple Screen and Windowing API objects. Data types in screen.h Data structures, typedefs, and enumerations that are available for multiple Screen and Windowing API objects.