Process Sleep or Query Messages Silently

[This is preliminary documentation and subject to change.]

Recommendation   (Designed for Microsoft® Windows® Logo)

Your application should not request any user input while it is processing a WM_POWERBROADCAST sleep or query message.

Exception

Your application can display a confirmation dialog box only if both of the following conditions are met:

• The UI Allowed bit is set in the WM_POWERBROADCAST message.
• Putting the computer to sleep will cause user data loss or corruption.

See Also

Pretesting OnNow/ACPI Support.

http://www.microsoft.com/hwdev/onnow.htm for information about the OnNow initiative and technical specifications.