This property can be used to set the starting position of each column in the a tree-view with Table-View style. As a consequence, it defines the number of columns. The width of each column depends on the starting position of the next column. The width of the last column can be defined with the Virtual-Width property. A column cannot be larger than the tree-view width, so the tree-view Size specifies also the maximum size of a column.

Since this property must be set for each column, a list of values is needed in order to determine the starting position of each column.

Setting this property to 0 resets the list.

When a single value greater than zero is set, it is appended to the list. This is useful to define a user-defined appearance. The snippet below defines three columns, 10 characters wide. The first column always starts at 1:

When values are enclosed between parentheses, a new list is defined at once. This is the typical syntax used in the Screen Section definition of a tree-view. The snippet below defines three columns, 10 characters wide. The first column always starts at 1.

 

Example - Define a tree table to host a group data item