Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 814)

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CHAPTER 22

Transport Interface

22-26 Using the Transport Interface

Figure 22-2 Routing information view

In your transport object, store a reference to your routing information template in

the

transportInfoForm slot.

To add your own information to the routing information view, you can supply a

BuildText method. From BuildText, call the AddText method for each

additional line of text you want to add below the existing elements. Alternatively,

you can add child views to the routing information view.

If you do add additional lines or views to the routing information view that cause it

to increase in height, you must also set the

addedHeight slot in the routing

information view or in your

BuildText method (or anywhere before the inherited

ViewSetupFormScript method is called). In this slot, specify the number of

pixels by which you are increasing the height of the view.

The header view may include editable ﬁelds. If the user changes something in an

editable ﬁeld, you probably want to know about it so that you can save the new

information or perform other operations. The

InfoChanged message is provided

for this purpose. This message is sent to whatever object you designate when the

header view is closed.

Providing a Routing Slip Template 22

A transport uses a routing slip when sending an item in order to get all the informa-

tion necessary to transmit the item. Since the user interface for the routing slip is

provided by the transport, the application does not need to know anything about

what is required to send the item.

Tap

transport

icon next to

Routing

information

view is

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