Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 744)

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CHAPTER 20

Localizing Newton Applications

20-12 Using the Localization Features of the Newton

To use one of these values, access the appropriate slot by dereferencing

ROM_dateTimeStrSpecs with a dot operator, as in the following example:

LongDateStr(Time(),ROM_datetimestrspecs.longDateStrSpec);

Using these predeﬁned format speciﬁcations also saves the trouble of deﬁning them

at compile time and initializing slots with the compile-time variables at run time.

Format speciﬁcations available from the

ROM_dateTimeStrSpecs object are

listed in “System-Deﬁned Format Speciﬁcations” (page 17-11) in Newton

Programmer’s Reference

Using GetDateStringSpec 20

A date or time format speciﬁcation is an array, the elements of which are

themselves two-element arrays. The ﬁrst element in each two-element array is a

constant specifying the item to display. The second element is a constant specifying

the format in which to display that item.

The complete set of constants is listed in “Constants to Create Your Own

Speciﬁcation” (page 17-13) in Newton Programmer’s Reference.

For example, the two-element array [kElementDayOfWeek, kFormatAbbr]

speciﬁes that the day in a date string is to be displayed in abbreviated format, such

as “Wed”. On the other hand, the two-element array

[kElementDayOfWeek,

kFormatLong] specifies that the day of the week is to be displayed in long

format, such as “Wednesday”.

The following code example uses system-supplied constants to build an array of

[element, format] pairs specifying the output of a date string. This array is

supplied as the argument to the

GetDateStringSpec function, which returns the

format speciﬁcation passed to the LongDateStr function. The LongDateStr

function returns a string with the current time (returned by the

Time function)

formatted as speciﬁed by the format speciﬁcation:

// at compile time, define my array of

// element and format pairs

DefConst('myArray,

[

[kElementYear, kFormatNumeric],// year

[kElementDay, kFormatNumeric],// day of month

[kElementMonth, kFormatLong],// name of month

[kElementDayOfWeek, kFormatLong]// day of week

]);

// create the formatSpec

// this spec returns a string such as “February 1, 1994”

DefConst('kmyDateSpec, GetDateStringSpec(myArray));

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Apple Newton Utilities Guide de l'utilisateur Page 744

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