NewtApp Applications

About the NewtApp Framework

Calls is an example of a page-based application

The overview protos are also layouts; they include the

newtOverLayout

and

newtRollOverLayout

protos.

The NewtApp framework code that governs soups, scrolling, and all the standard
view functionality, is implemented in the layout protos. A main (default) view
layout and an overview layout must be declared in the

allLayouts

slot of the

newtApplication

base view. See "newtApplication" (page 3-8) in Newton

Programmer's Reference for details.

Your layout can also control which buttons show on the status bar; you can set the

menuLeftButtons

and

menuRightButtons

slots of the layout proto, along

with the

statusBarSlot

of the base view (

newtApplication

proto). This

control becomes important when more than one entry is shown on the screen, as in
a roll-style application. For example, when multiple entries are showing on one
screen, the Action and Filing buttons would not be on the status bar. Instead, they
would be on the header of each entry, so the entry on which to perform an action is
unambiguous.