Note that this setting applies to the page area, not the entire VTS application. Borders, scroll bars and the title bar must all be accounted for in addition to the DispMgrWidth value.

The border of a window can vary in width depending on the value set for your Active Window Border Size (found in the advanced properties of the Windows Desktop Properties: Appearance)  If set to 1, the border will be 4 pixels around the window.  Each additional number in the setting adds one pixel.  Thus, if your screen resolution is currently set to 1024x768 and you set the DispMgrWidth to 1024, the page will not fit the screen, since the page width will exceed the available space by a distance equivalent to the width of two borders, plus the vertical scroll bar, if visible.

As a guideline, the DispMgrWidth should be set at least 8 pixels less than the current screen height.