Column adding and copying

TreeGrid documentation

If it is possible to add new columns to grid, bit array for the column sections.
1 - middle columns, 2 - right columns, 4 - left columns. Set to 7 for all sections.
By default it is disabled!
If it is possible to copy (duplicate) columns in grid, bit array for the column sections.
1 - middle columns, 2 - right columns, 4 - left columns.
It is disabled if set ColAdding='0'.
By default it is enabled, but copying is disabled due default ColAdding='0'!
If the column can be copied. 0 - no, 1 - inside its section, 2 also outside its section.
By default it is 0 for Panel, Index, Gantt and ConstWidth columns, 1 for columns added by AutoCols, and 2 for all other columns.
Adds or copies one or more columns to grid.
cols can be an array of columns to be copied.
Or the cols can be a number of new columns to add.
tocol is column next to place the new columns, left if right is 0 or right if right is 1.
Or the tocol can be a column section (0 - left, 1 middle, 2 right) where to place the new columns. To beginning, if right is 0, or to end, if right is 1.
If empty is 1, copies the columns empty or with the EditAttrsEmpty if set.
If focus is 1, focuses the new columns in the same row(s) as the original focus.
Returns the new added columns.
Called when new or copied columns are added to grid. Return true to suppress the action.
It is called from AddCols method and the parameters are the same.
Adds one new column to the table.
col is column name, sec is section of columns (0 - left, 1 - mid, 2 - right), pos is column position in its section (from 0). -1 for the last column.
param (new in 7.0) is an object with all parameters like for <C> tag, to preset them in the column, for example { Width:100, Type:"Lines", CanSort:0 }
Before 7.0 version the param was integer and specified column width, it is still supported, but not recommended.
for show = 1 is column displayed in table, for show = 0 it is hidden and can be displayed by ShowCol method.
type is set column Type attribute (just for backward compatibility, it can be set in param), caption is string displayed in all headers for this column.
New column will have default values from <D Name='C'>.
Returns new column or null if column with given name already exists.
Adds one new column left to the actual or focused column. Adds one new column right to the actual or focused column. Adds one new column on the end of variable columns section.
It always creates brand new column and ignores EditAttrEmpty attribute.
Adds the same number of new columns as actually focused columns, left to actual column or focused range. Adds the same number of new columns as actually focused columns, right to actual column or focused range. Adds the same number of new columns as actually selected columns, left to the actual or focused column. Adds the same number of new columns as actually selected columns, right to the actual or focused column. Copies actual or focused column to the left side of itself. Copies actual or focused column to the right side of itself. Copies all focused columns to the left side of actual column or the focused range. Copies all focused columns to the right side of actual column or the focused range. Copies all selected columns to the left side of actual or focused column. Copies all selected columns to the right side of actual or focused column. Starts copying column by mouse dragging.
The columns can be copied inside Header or placed to DropCols cells.
Starts copying selected columns by mouse dragging. Fails if actual column is not selected.
The columns can be copied only inside Header. Ignores Block attributes.