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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
12
Notices
A notice is a pop-up window that notifies the user of a problem or asks a question that
requires a response. Generally, notices report serious warnings or errors. OPEN LOOK notices
do not have headers or footers and cannot be moved. The XView notice object is subclassed
from the XView generic object. As with any XView object, you can configure a notice using
attributes and you can use xv_create(), xv_get(), and xv_set(). Figure 12-1 shows
the notice object class hierarchy.
Generic
Object
Notice
Figure 12-1. Notice class hierarchy
XView defines two types of notices, Standard notices and screen-locking notices:
Standard notices do not lock the screen and are placed centered in the “owner” frame.
This type of notice may either block the application’s thread of execution, or not block.
Screen-locking notices lock the screen and block input to all applications (the screen is
locked with X grabs). These notices appear with a shadow that emanates from the loca-
tion where an action in an application initiates the notice. This may be a panel button,
such as “Quit,” or some other XView object.
New applications that are created with XView Version 3 should use the
NOTICE package
described in this chapter. Older versions of XView only supported notices with a nonobject-
oriented interface using the notice_prompt() function. For compatibility,
notice_prompt() is still supported. However, for new ...
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Publisher Resources

ISBN: 9780937175873