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Avoiding user uncontrollable situation related for large desktop configuration

IP.com Disclosure Number: IPCOM000019715D
Original Publication Date: 2003-Sep-26
Included in the Prior Art Database: 2003-Sep-26
Document File: 1 page(s) / 7K

Publishing Venue



This method enables user's operation for the desktop screen which has been displayed only for a detached display device.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Avoiding user uncontrollable situation related for large desktop configuration

  Disclosed is a method to disable extended desktop by hot key. Consider a case such that extended desktop is enabled. The primaty desktop is displayed on a display device. Another desktop is displayed on another display device. If user detatch one of the display devices, the user could not access any objects displayed on the detached display device. This method enables user's operation for the objects by disabling extended desktop when display swiching hot key is pressed.

Display driver switches the active display device when Windows OS (*1) receive ACPI event which is generated by hot key. A kernel mode module hooks the ACPI event and does not post the event for Windows OS (*1). Alternatively, the event is post to an user mode module. The user mode module checks the following display configuration via display drivers:

  - Attached display devices, - Activated desktop screen, - The mapping between the desktop screen and the display device. If the user mode module identified missed display device which should be attached, the user mode module disables the extended desktop. Then any object displayed in the detached display device is moved to another desktop screen. Thus display switching hot key enables user to access any object.

* Windows is trademarks of the Microsoft Corporation

Disclosed by International Business Machines Corporation