Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 688)

C H A P T E R 1 9
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
);