This chapter presents information on the Transparent Overlay Extension application programming interface (API) that provides transparent overlay window capabilities in the Solaris OpenWindows environment. The chapter includes information on the following topics:
How overlay windows differ from standard X windows
How to create and draw to overlay windows
How to ensure that applications using transparent overlay windows are portable to a wide range of devices
Note - It is recommended that you use server overlays if supported by your hardware. Server overlays are supported on FFB devices. For more information about server overlays, see Chapter 5, Server Overlay Windows.