Text and Ink Input and Display

Using Text

Here is an example of a template defining a view of the

clEditView

class:

editor := {...

viewClass: clEditView,
viewBounds: {left:0, top:0, right:200, bottom:200},
viewFlags: vVisible+vAnythingAllowed,
viewFormat: vfFillWhite+vfFrameBlack+vfPen(1)+

vfLinesLtGray,

viewLineSpacing: 20,
// methods and other view-specific slots
viewSetupFormScript: func()...

...}

When a child view is automatically created by a

clEditView

, the

vNoScripts

flag is set in the

viewFlags

slot of the child view. This flag prevents system

messages from being sent to a view.

This behavior is normally desirable for automatically created views, because they
have no system message-handling methods and the system saves time by not
sending the messages to them.

If you want to use one of these views in a manner that requires it to receive system
messages, you need to remove the

vNoScripts

flag from the

viewFlags

slot of

the view.

A view of the

clEditView

class can appear simply as a blank area in which the

user writes information. However, this type of view usually contains a series of
horizontal dotted lines, like lined writing paper. The lines indicate to the user that
the view accepts input. To create the lined paper effect, you must set the following
slots appropriately:

viewFormat

Must include one of the

vfLines...

flags. This activates the

line display.

viewLineSpacing

Sets the spacing between the lines, in pixels.

viewLinePattern

Optional. Sets a custom pattern that is used to draw the lines
in the view. In the

viewFormat

slot editor in NTK, you

must also set the Lines item to Custom to signal that
you are using a custom pattern. (This sets the

vfCustom<<vfLinesShift

flag in the

viewFormat

slot.)
Patterns are binary data structures, which are described in the
next section.