Text and Ink Input and Display

Using Text

You can define a custom line pattern for drawing the horizontal lines in a paragraph
view. A line pattern is an eight-byte binary data structure with the class

'pattern

.

To create a binary pattern data structure on the fly, use the following
NewtonScript trick:

myPattern := SetClass( Clone("\uAAAAAAAAAAAAAAAA"),

'pattern );

This code clones a string, which is already a binary object, and changes its class to

'pattern

. The string is specified with hex character codes whose binary represen-

tation creates the pattern. Each two-digit hex code creates one byte of the pattern.

For a child view of a clEditView to be editable, you need to follow certain rules:

The child view must reside in the

viewChildren

slot of the

clEditView

.

You cannot store a child view's template in the

stepChildren

slot, as NTK

normally does.

The child view must contain a

viewStationery

slot with an appropriate

value, depending on the view class and data type. The acceptable values are
shown in Table 8-2:

Add the child view templates to the

viewChildren

array of the edit view and

open the view or send it the

RedoChildren

message. Alternatively, you can

add the child view with the

AddView

method and then send the

Dirty

message

to the edit view.

viewStationery

slot value for

clEditView

children

clParagraphView

text

'para

clPolygonView

recognized
graphics

'poly

clPolygonView

ink

'ink

clPictureView

bitmap or
picture object

'pict