Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 300)

C H A P T E R 8
Text and Ink Input and Display
8-8 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()...
...}
System Messages in Automatically Created Views 8
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.
Creating the Lined Paper Effect in a Text View 8
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< flag in the viewFormat
slot.)
Patterns are binary data structures, which are described in the
next section.