Chapter 11: Creating the User Interface
119
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
As with dialog boxes,
MenuName
is the name used to refer to the menu both in
the resource file and inside a C program.
Flags
is usually zero for a menu. If
Flags
is equal to RC_NO_IDS then the menu IDs are not symbolic values stored
in the menu’s header file but instead are absolute numbers that will be used as
IDs for each menu item. If
MaxWidth
(in pixels) is set to zero then
MenuBegin
will draw the menu only as wide as necessary.
MaxHeight
should be set to 0
which will use the default height.
A menu item that includes other menu items is called a parent (the entry
Text2 {
above). Parent menu items do not normally have IDs associated with them since
they cannot be selected by the user and so do not return an ID value. However,
they may need an ID for two reasons. The first is if the menu is to be loaded
using
MenuLoad
and then later modified; since an ID is needed to modify an
entry. The second reason is if the menu item is to be disabled or checked. The
entry
Text1, TOP_LEVEL_ID1
is not a parent since it is a stand-alone entry. It can
be selected by pressing the menu key associated with that entry (
ƒ
in this
case). The entry
Text10, TOP_LEVEL_ID10 {
is a special case. It is a parent
(cannot be selected) that has no children. This is only used for menus loaded
with the
MenuLoad
function. This entry can then later have other menu entries
(children) added to it. See the
MenuLoad
function for an example.
11.5.3. POPUPs
POPUP PopupName, Flags, MaxHeight, Title {
. . . same format as a menu . . .
}
POPUPs are defined almost identically to MENUs. The differences are that
POPUPs may have an optional title (a text string delimited by double quotes or
an icon) as well as a
Flags
value of MF_NO_NUMS (32) which signifies that the
individual items in the pop-up are not to be numbered. If
MaxHeight
is set to zero
then the
MenuPopup
routine will try to fit as much of the pop-up on the screen
as it can. This value may be overridden as long as the size of any title is taken
into account.
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