Causes the minimum and/or natural width to grow if the new
proposed sizes exceed the current minimum and natural width.
This is used by #GtkCellAreaContext implementations during
the request process over a series of #GtkTreeModel rows to
progressively push the requested width over a series of
gtk.cell_area.CellArea.getPreferredWidth requests.
Causes the minimum and/or natural width to grow if the new proposed sizes exceed the current minimum and natural width.
This is used by #GtkCellAreaContext implementations during the request process over a series of #GtkTreeModel rows to progressively push the requested width over a series of gtk.cell_area.CellArea.getPreferredWidth requests.