Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 275)

C H A P T E R 7
Controls and Other Protos
Time Protos 7-15
Figure 7-22 A protoNewSetClock view
■ The protoSetClock time proto also displays an analog clock with which the
user can set a time value. Although this proto is still available for use, it has
been updated to the
protoNewSetClock , which you should use instead.
■ The protoAMPMCluster time proto displays A . M . and P . M . radio buttons in a
protoNewSetClock view. For more information about the slots and methods
for this proto, see “protoAMPMCluster” (page 6-44) in Newton Programmer’s
Reference. Figure 7-23 shows an example of a
protoAMPMCluster view.
Figure 7-23 A protoAMPMCluster view
Implementing a Simple Time Setter 7
To implement a time setter, define your template with the proto that you want
to use, specify the initial time value to show in the clock, and define the
TimeChanged method. You might also need to define additional slots or messages,
as described in “Time Protos” (page 6-38) in Newton Programmer’s Reference.
The following example is a template that uses protoDigitalClock to allow the
user to specify a time:
clock := {...
_proto: protoDigitalClock,
time: 0,
TimeChanged: func()
begin
// add your code to respond to time change
print(time);
end,