Apple Newton Utilities User's Guide download pdf (Page 688)

100

101

CHAPTER 19

Built-in Applications and System Data

19-14 Dates

[StringToDate("6/1/95 12:00am"),

StringToDate ("6/30/95 11:59pm")],

nil,

nil);

■ To ﬁnd the unique meeting in the month of June with the word “lunch” in the

title or the notes, and handle the possibility of an exception being thrown if this

criterion is not unique:

try

GetRoot().calendar:FindExactlyOneAppointment

(nil,

'["lunch"],

[StringToDate("6/1/95 12:00am"),

StringToDate("6/30/95 11:59pm")],

nil);

onexception |evt.ex| do

if CurrentException().data.errorCode = -48418

then //handle this case

else Rethrow()

The Dates application also provides a method, FindNextMeeting, which returns

an array with the meeting start date and duration, for the ﬁrst meeting after a

speciﬁed time. The

FindNextMeeting method is thus particularly useful for

ﬁnding an open time slot in the user’s schedule.

■ Here is an example, which ﬁnds the next meeting after 2 P. M . on November 1, 1996:

GetRoot().calendar:FindNextMeeting

(StringToDate("11/1/96 2pm"));

Moving Meetings and Events 19

To move an appointment programmatically you employ the MoveAppointment

method.

■ Here is an example; note that the parameters to MoveAppointment are:

(mtgText,mtgStartDate,newStartDate,newDuration).

GetRoot().calendar:MoveAppointment(

"Job Review",

StringToDate("9/1/96 9:30am"),

StringToDate("9/8/96 4:00pm"),

nil //do not change duration

);

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