Apple Newton Utilities User's Guide download pdf (Page 739)

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CHAPTER 20

Localizing Newton Applications

Using the Localization Features of the Newton 20-7

For example:

activeLocale:=GetLocale();

Once you’ve obtained a bundle, you can examine it to see how your application

should interpret user input or display output.

See “Contents of a Locale Bundle” (page 17-1) in Newton Programmer’s

Reference for information on the slots of a locale bundle.

Changing Locale Settings 20

You cannot change settings in the active locale bundle. To change locale settings,

you need to create a new locale bundle that has the values you want and make it the

active locale. This is called a custom locale bundle. See the next section for

information on how to create on of those.

Creating a Custom Locale Bundle 20

Every custom locale bundle has a _proto slot that references another locale

bundle. To create your application’s custom locale bundle, use the

FindLocale

function to get the frame to be referenced by your custom locale bundle’s

_proto slot.

IMPORTANT

Your custom bundle’s _proto slot must ultimately reference a

system-supplied locale bundle. That does not have to be direct—

you can reference a custom bundle that you know references a

system-supplied bundle, for example.

▲

Your custom locale bundle is simply a frame that includes this _proto reference

and any additional slots you wish to deﬁne to override the values of those inherited

from the prototype. Your custom locale bundle should look like the code in the

following example:

usLocaleBundle := FindLocale('usa);

myLocaleBundle :=

{

_proto: usLocaleBundle,

// add slots to be modified

title: "myLocaleBundle:PIEDTS",

localeSym: '|myLocaleBundle:PIEDTS|,

};

The FindLocale function accepts as its argument a symbol specifying the locale

bundle it is to return. This function returns the locale bundle that has this value in

its

localeSym slot.

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