How to remove all the columns of a GtkListStore in one shot ?

[Colossus <colossus 3000 it>]

Hi,

I create 8 columns in a GtkListStore this way:
liststore = gtk_list_store_new (8, G_TYPE_STRING , G_TYPE_STRING, 
G_TYPE_STRING, 
G_TYPE_STRING,G_TYPE_STRING,G_TYPE_STRING,G_TYPE_STRING,G_TYPE_STRING);
	gtk_tree_view_set_model (GTK_TREE_VIEW (treeview1), GTK_TREE_MODEL 
(liststore) );
	char *names[] = {("Original Size"),("Method"),("Compressed 
Size"),("Ratio"),("Date"),("Time"),("CRC-32"),("Filename")};
        for (x = 0; x <= 7; x++)
        {
                renderer = gtk_cell_renderer_text_new ();
		column = gtk_tree_view_column_new_with_attributes ( 
names[x],renderer,"text",x,NULL);
                gtk_tree_view_append_column (GTK_TREE_VIEW (treeview1), column);
        }

Next I need to remove and to create others of different type and 
numbers, instead of using another for loop to remove a column at a 
time, is there a way to remove ALL of them is one shot as 
gtk_list_store_clear() for the rows ?

Thank you,
--
Colossus

Cpsed, a Linux OpenGL 3D scene editor
http://cpsed.sourceforge.net/