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Chapter 9: Application Control Flow
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
0x702 CM_START
Sent to an application when it is being started. Included in the start
message is a rectangle with the requested window location and
size chosen by the user from the mode screen settings. This
rectangle is passed into
WinOpen
to create the application’s initial
window. Some applications display a Current/Open/New submenu
on the APPS menu. The
startCode
field of the start message
(
StartInfo
) tells the application which submenu command the user
chose.
0x703 CM_ACTIVATE
More than one application may be visible on the screen, but only
one at a time can interact with the user. The activate message is
sent to an application to designate it as the interactive center of
attention. Most event messages are directed to the active
application until it receives a deactivate message.
The active application should highlight its window border to make
it apparent to the user which window is active.
The default event handler displays the application’s registered
menu.
0x704 CM_FOCUS
Tells the application to turn on its cursor flash. This message is
normally handled by the text editor event handler. See
TE_handleEvent
.
0x705 CM_UNFOCUS
Tells the application to turn off its cursor flash. This message is
normally handled by the text editor event handler. See
TE_handleEvent.
0x706 CM_DEACTIVATE
Sent to the active application to inform it that it no longer holds the
interactive center of attention.
The default event handler calls
MenuEnd
to release registered
menu memory.
0x707 CM_QUIT
Tells the application to prepare to quit. The application should
save its data and release any memory handles it allocated.
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