Intergraph TD-20 Setup, Setup Manual

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14
Configuring a Dual-Screen Display (G95 Graphics)
On a system set up for dual-screen G95 graphics (using two G95 video display adapters), the
video display driver treats the combined display area of both screens as a single canvas that
covers both screens. In this Full Canvas style, windows centered on the canvas are split
between the two screens. This includes most system dialog boxes.
Under Windows NT Workstation 3.51, the G95 video display driver can treat the left or top
monitor as the primary screen, while a full desktop extends across both screens. In this
Primary Top/Left style, some windowing behaviors may be unexpected. For example, dialogs
display fully and applications maximize on the primary screen; toolbars may not use the entire
desktop; and screen savers may work only on the primary screen.
NOTE The Primary Left/Top dual-screen style is not avai lable in Windows NT Workstation 4.0.
To change the dual-screen style under Windows NT Workstation 3.51, you must edit the
Windows NT Registry.
WARNING Be careful when making changes to the Registry. Any mistakes or incorrect changes
may cause serious operating system problems, and you may have to re-install Windows
NT. If the system becomes unusable after you have changed the Registry, you may be
able to restart the system and use the Last Known Good configuration option to undo
the changes. Refer to Windows NT documentation for more information on the Last
Known Good configuration option.
To change the dual-screen style:
1. Start the Registry Editor (
REGEDT
32.
EXE
) to open the Registry.
2. Open the following subkey in the Registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mgax64\
Device0
3. In the right-hand pane of the Registry Editor Window, select User.Center.Dialogs.
4. From the Edit menu, select DWORD.
5. To enable Primary Top/Left style, type 0 into the Data box. To enable Full Canvas style,
type 1 into the Data box.
6. Select OK.
7. Exit from the Registry Editor.
8. Restart the system.