Sylpheed

#include <gtk/gtktreemodel.h>

#include <gtk/gtktreesortable.h>

#include <gtk/gtktreeview.h>

#include <gtk/gtkversion.h>

void gtkut_tree_sortable_unset_sort_column_id(GtkTreeSortable *sortable)

{

#if GTK_CHECK_VERSION(2, 6, 0)

	gtk_tree_sortable_set_sort_column_id

		(sortable, GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID,

		 GTK_SORT_ASCENDING);

#else

	GtkTreeStore *store = GTK_TREE_STORE(sortable);

	g_return_if_fail(GTK_IS_TREE_STORE(sortable));

	if (store->sort_column_id == -2 && store->order == GTK_SORT_ASCENDING)

		return;

	store->sort_column_id = -2;

	store->order = GTK_SORT_ASCENDING;

	gtk_tree_sortable_sort_column_changed(sortable);

#endif

}