Apple Newton Utilities User's Guide download pdf (Page 395)

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101

CHAPTER 10

Recognition: Advanced Topics

Using Advanced Topics in Recognition 10-19

Using protoRecToggle Views 10

A protoRecToggle view changes the recognition behavior of views by overriding

values inherited from the system’s user conﬁguration data. Note that values in the

view’s

recConfig frame override settings speciﬁed by the protoRecToggle view.

The

protoRecToggle view is usually used with clEditView views that set the

vAnythingAllowed mask or clParagraphView views that support ink text.

Take the following steps to use a

protoRecToggle view.

■ Create the recToggle view in NTK. If your application has a status bar, you

need to provide the

recToggle view as a child of the status bar.

■ Conﬁgure input views appropriately to support the choices your recToggle

view provides. To do so, you need to provide an appropriate

recConfig frame

or set the

vAnythingAllowed mask for each view that is to be controlled by

the

recToggle view.

■ Provide a _recogSettings slot at a place in the _parent chain that allows

each view controlled by the

recToggle view to inherit this slot.

You can take the following optional steps to customize your

recToggle view’s

appearance or behavior:

■ Provide a _recogPopup slot specifying the items to be included in the

protoRecToggle picker.

■ Implement a RecogSettingsChanged method in the _parent chain of any

view controlled by the

recToggle view.

The next several sections describes these steps in detail.

Creating the recToggle View 10

To create a recToggle view, you’ll ﬁrst need to sketch it out in the NTK layout

editor. When you do so, you’ll notice that regardless of where you draw it, the view

will appear in the upper-left corner of the layout. This is because the

recToggle

view is intended to be displayed as a child of the status bar in applications that

have one.

When a recToggle view is a child of your application’s status bar, the view system

positions the

recToggle view on the status bar automatically, ignoring the value

of the

recToggle view template’s viewBounds slot in the process. When the

recToggle view is not a child of the status bar, you must create a viewBounds

slot for it and set appropriate values for this slot.

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Apple Newton Utilities User's Guide Page 395

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