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 ...