Sets the column with markup information for icon_view to be column. The markup column must be of type #G_TYPE_STRING. If the markup column is set to something, it overrides the text column set by gtk.icon_view.IconView.setTextColumn.
A column in the currently used model, or -1 to display no text
Sets the column with markup information for icon_view to be column. The markup column must be of type #G_TYPE_STRING. If the markup column is set to something, it overrides the text column set by gtk.icon_view.IconView.setTextColumn.