Below is a utility method that will allow the selection unit to be changed.
By default, the selection unit is a cell. This can be changed to a row or a column. For example if row is set, selecting a cell will select the entire row containing the cell.
This is similar to the legacy 4D View feature of PV SET AREA PROPERTY with the pv select mode property.

// Method: VP_SetSelectionUnit // // Description: // Sets Selection Unit for 4D VP Area // // Parameters: // $1 - VP Area Name // $2 - Selection Mode // - 0 : cell (Default) // - 1 : row // - 2 : column // ================================================================ #DECLARE($vpArea_t : Text; $selectionMode_l : Integer) var $res_o : Object var $jsScript_t; $res_t : Text $res_o:=WA Evaluate JavaScript(*; $vpArea_t; "Utils.spread;"; Is object) If ($res_o=Null)    $jsScript_t:="spread" Else    $jsScript_t:="Utils.spread" End if $jsScript_t:=$jsScript_t+".getActiveSheet().selectionUnit(GC.Spread.Sheets.SelectionUnit\   [GC.Spread.Sheets.SelectionUnit["+String($selectionMode_l)+"]])" $res_t:=WA Evaluate JavaScript(*; $vpArea_t; $jsScript_t; Is text)

Example of use:

VP_SetSelectionUnit("ViewProAreaName"; 2)

The above will set the area's selection mode to Columns. If a use clicks on a cell or makes a selection the column(s) of the selected cells will be selected.