Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 204)

C H A P T E R 6
Pickers, Pop-up Views, and Overviews
6-4 General-Purpose Pickers
■ protoPeoplePopup
The following two protos are data types that support the protoListPicker :
■ protoNameRefDataDef
■ protoPeopleDataDef
Obsolete Function 6
The DoPopup global function used in system software version 1.x is obsolete; it is
supported in version 2.0, but support is not guaranteed in future releases. Use the
new
PopupMenu function instead.
Picker Categories 6
The remainder of this chapter divides the pickers into a number of categories. The
protos within each category operate in a related manner. General-purpose protos
are used to create simple, general-purpose pickers and pop-up views. The remaining
protos in the list are triggered by specific user actions or by events that you define:
■ general-purpose pickers
■ map pickers
■ text pickers
■ date, time, and location pickers
■ number pickers
■ picture picker
■ overview protos
■ roll protos
There is also a section discussing the view classes used with pickers.
General-Purpose Pickers 6
You use the protos described in this section to create simple, general-purpose
pickers and pop-up views. Some of the following protos are triggered by specific
user actions, while others are triggered by events that you define:
■ The protoPopupButton picker is a text button that displays a picker when
tapped. The button is highlighted while the picker is open. For information
about the slots and methods for this picker, see “protoPopupButton” (page 5-4)
in Newton Programmer’s Reference. Figure 6-1 shows an example of a
protoPopupButton .