Apple Newton Utilities User's Guide download pdf (Page 870)

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101

CHAPTER 24

Built-in Communications Tools

24-12 AppleTalk Functions

The following example shows how to instruct a communications tool to allow its

resources to be claimed by another tool. For instance, you might send this option

with an

arglist value of true if you are listening for an incoming connection.

The default for all tools is to be in an active state.

{

label: kCMOPassiveState,

type: 'option,

opCode: opSetRequired,

data: {

arglist: [

true, // passively claim modem

typelist: [

kStruct,

kBoolean,

]

}

AppleTalk Functions 24

The Newton system software provides a number of global functions for obtaining

the addresses of other devices on the network.

If you are using an endpoint with the AppleTalk tool, the AppleTalk drivers are

opened automatically when you call the endpoint

Bind method. The drivers are

closed when you call the endpoint

UnBind method.

To manually open the AppleTalk drivers, you need to call the

OpenAppleTalk

function. When you are done with AppleTalk, call the

CloseAppleTalk function

to close the drivers.

Note that you call the AppleTalk zone access functions without ﬁrst calling

OpenAppleTalk. Each of the AppleTalk zone access functions opens the drivers

(if necessary), performs its operations, and closes the drivers (if necessary). If you

are making multiple AppleTalk calls, it is more efﬁcient for you to manually open

the drivers, make your calls, and then close the drivers.

Table 24-8 summarizes the AppleTalk functions. These functions are described in

detail in “AppleTalk Functions” (page 21-76) in Newton Programmer’s Reference.

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