📄 intro.0
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intro(4) intro(4)NAME intro -- introduction to the calculator applicationSYNOPSIS Objct Class Event Ic IcClass Button Calc Crt CButton CLineOut LineOut Mux List ListClass Xt XawBox XawCommand XButton XawForm XawLabel XLineOut XtApplicationShellDESCRIPTION Object(3) is the root class. Object needs to be renamed as Objct because the original name is used by X11. Event(4) is a class to represent input data such as key presses or mouse clicks. Ic(4) is the base class to represent objects that can receive, process, and send events. Button converts incom- ing events to events with definite text values. Calc pro- cesses texts and sends a result on. LineOut displays an incoming text. Mux tries to send an incoming event to one of several objects. Crt(4) is a class to work with the curses terminal screen function package. It sends position events for a cursor and text events for other key presses. CButton implements Button on a curses screen. CLineOut implements LineOut. List manages a list of objects and is taken from chapter 7. Xt(4) is a class to work with the X Toolkit. The sub- classes wrap toolkit and Athena widgets. XButton imple- ments a Button with a Command widget. XLineOut implements a LineOut with a Label widget.SEE ALSO curses(3), X(1) local: ats 1
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