Apple Newton Utilities User's Guide download pdf (Page 765)

100

101

CHAPTER 21

Routing Interface

Using Routing 21-17

RegisterViewDef. Nor should you use DefConst, or any other method

that directly references the routing format. This is because the entire

InstallScript function is passed to EnsureInternal (for application parts).

Your routing format layouts would be copied into the NewtonScript heap, wasting

precious memory.

Instead, you should use an indirect method to reference your routing format

layouts. One way is to store a reference to your routing format layouts (by using

GetLayout) in a slot in your application base view (for example,

myRoutingFormat). Then in the InstallScript function, you can reference

that slot through the expression partFrame.theForm.myRoutingFormat.

Because the reference to the layout is found at run time through an argument to

InstallScript, it is not copied into NewtonScript memory by

EnsureInternal when your application is installed.

For example, ﬁrst you could store the routing format layout in an application base

view slot:

myRoutingFormat: GetLayout("MyNiceLayout");

Then in the InstallScript function, you could use code like this to register the

format:

InstallScript(partFrame)

begin

local myApp := partFrame.theForm;

...

RegisterViewDef(myApp.myRoutingFormat,

kMyMainDataClassSym);

end;

For more information about view deﬁnitions and the functions that act on them,

refer to Chapter 5, “Stationery.”

Note

If your application uses the NewtApp framework, registering

routing formats is much easier. The NewtApp framework does it

for you. All you have to do is add your formats to the

allViewDefs frame in the application base view (that is based

on the

newtApplication proto). For more information, see

“Using the Required NewtApp Install and Remove Scripts”

beginning on page 4-21.

◆

1 2 ... 760 761 762 763 764 765 766 767 768 769 770 ... 941 942

Comments to this Manuals

No comments

Apple Newton Utilities User's Guide Page 765

Comments to this Manuals

Related products and manuals for Software Apple Newton Utilities