Frame - Texas Instruments TI-89 Developer's Manual

Chapter 7: Flash Application Layout
7.3.1.1.

FRAME

Here is how a typical frame looks.
#define STRING1 (OO_FIRST_APP_STRING+0)
#define STRING2 (OO_FIRST_APP_STRING+1)
FRAME( frameName , parent , prototype , firstAttr , count )
ATTR( attrSelector , value )
ATTR( . . . )
.
.
.
ATTR(OO_FIRST_STRING+STRING1, "a string")
ATTR(OO_FIRST_STRING+STRING2, "another string")
.
.
.
ENDFRAME
The
FRAME
frameName — name of the object frame. This becomes the name of the
•
OO_Hdr
parent — pointer to another frame higher in the object hierarchy. This field
•
should contain
in the OS.
prototype — pointer to another frame on the same level of the object
•
hierarchy, often another frame within the application. This value can be zero
(0) if the application has only one object frame. At any rate, this value must
be zero in the last prototype frame of a linked list.
firstAttr — number of the first attribute or method selector in the frame. This
•
must be the same value as the attrSelector of the first
frame.
count — count of attributes and method selectors in the frame.
•
The
FRAME
(
OO_Attr
attrSelector — the selector number of the attribute. Every selector within a
•
frame must be unique and sorted into increasing order. The object frame
accessor functions (
their selector number.
Note: The OS does not check that attribute selectors are in increasing order. You must
TI-89 / TI-92 Plus Developer Guide
macro defines the header of an object frame, an
structure.
OO_SYSTEM_FRAME
header is followed by
structures).
OO_GetAttr
make sure the attributes are in order when you create the frame. Attribute look-up
will fail if they are not.
Not for Distribution
, a pointer to the root of the object hierarchy
macros which define frame attributes
ATTR
and ) look up frame attributes by
OO_SetAttr
39
structure.
OO_Hdr
macro in the
ATTR
Beta Version January 26, 2001