Apple Newton Utilities User's Guide download pdf (Page 266)

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CHAPTER 7

Controls and Other Protos

7-6 Button and Box Protos

Keep in mind that if you set scrollAmounts to values other than the default,

your method must check the value passed to it and scroll that amount.

Note

In general, you should discourage double-tapping, since

inadvertently tapping twice can cause a double-tap action

to occur.

◆

Advanced Usage 7

If you want more control over the arrow feedback, don’t use the scrollRect,

viewRect, or dataRect slots at all; instead, use the SetArrow and GetArrow

methods.

For more information about the

SetArrow method, see “SetArrow” (page 6-4) in

Newton Programmer’s Reference; for more on the

GetArrow method, see

“GetArrow” (page 6-4) in Newton Programmer’s Reference.

Button and Box Protos 7

You use the protos described in this section to display text and picture buttons,

checkboxes, and radio buttons. The Newton System Software provides a variety of

button and box types for use in your applications.

Each of these protos uses speciﬁc methods to control its behavior. For many of the

protos, the Newton System Software calls the

ButtonClickScript when the

button is tapped. You can deﬁne or redeﬁne this method to generate the actions that

you want associated with the button.

The Newton System Software calls certain methods for each of the protos described

here. For information about which methods you need to deﬁne for each proto, see

“Button and Box Protos” (page 6-6) in Newton Programmer’s Reference.

For information about sizing and placement recommendations for your button and

box protos, see Newton 2.0 User Interface Guidelines.

The following are the button and box protos that you can use in your applications:

■ The protoTextButton creates a rounded text button with text centered

vertically and horizontally inside it. For more information about the slots and

methods for this button, see “protoTextButton” (page 6-7) in Newton Programmer’s

Reference. Figure 7-5 shows an example of a

protoTextButton view.

Figure 7-5 A protoTextButton view

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