getColumn
Gets the GtkTreeViewColumn at the given position in the #tree_view.
Return
The GtkTreeViewColumn, or null if the position is outside the range of columns.
Parameters
n
The position of the column, counting from 0.
Gets the GtkTreeViewColumn at the given position in the #tree_view.
The GtkTreeViewColumn, or null if the position is outside the range of columns.
The position of the column, counting from 0.