Virtual-Width
This property is used to set the total width of the columns, regardless of the width of the Tree-View control.
The default value is dynamically calculated in order to maintain a width of 10 cells for the last column. The value is updated each time the user changes the width of a column. See also the <<Display-Columns>> property.
This property is used only with Tree-Views that have the Table-View style.
 
Example - Set the virtual width of a tree table view
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procedure division.
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  modify screen-1-tv-1 virtual-width 50