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Volume 7A: XView Programming Manual
book

Volume 7A: XView Programming Manual

by Dan Heller
October 1994
Intermediate to advanced content levelIntermediate to advanced
770 pages
22h 58m
English
O'Reilly Media, Inc.
Content preview from Volume 7A: XView Programming Manual
11.15 Initial and Default Menu Selections
Two special menu items are the default item (MENU_DEFAULT_ITEM) and the selected item
(MENU_SELECTED_ITEM). The default item defaults to the first item in the menu, and the
selected item is the selected item (or items for MENU_TOGGLE_MENU menus).
Although the default menu item may be set by using xv_set(), the user may interactively
change the default menu item by holding down the CONTROL key while also selecting a
menu item with the MENU button. Therefore, if the user selects a menu item that has a
pullright menu, but the pullright menu is not activated,* when your notify procedure is
called, you may choose to descend into the pullright menu and find the default menu item and
call that item’s callback routine.
11.16 Unpinned Command Frame Dismissal
XView normally handles unpinned command frame dismissal for you when a user action
within the command frame completes successfully. If a menu is brought up from a Menu
Button in the command frame, and the user makes a selection from the menu, the command
frame is dismissed if the pushpin (if visible) is out. By default, the attribute
MENU_NOTIFY_STATUS is set to XV_OK, which indicates that the command frame should be
dismissed if the pushpin is out, and the callback returns successfully. However, if the user-
specified action does not complete successfully, you may not want the command frame to be
dismissed.
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Publisher Resources

ISBN: 9780937175873