gtktreeview 迴圈該怎麼放?

Question

請問一下
我的程式如下
**********************************************************************************************
//gcc test.c -o test `pkg-config --cflags --libs gtk+-2.0`//
#include <gtk/gtk.h>
#include <stdio.h>
enum
{
    col_ssid = 0,
    col_strength,
    col_security,
    n_cols
};
void iwlist( GtkWidget *widget, gpointer data )
{
        system("iwlist wlan0 scanning |grep -c ESSID");
        //計算ssid 個數//   
        system("iwlist wlan0 scanning |grep ESSID |cut -c 28-|sed 's/.$//'>ssid");
        //取得ssid 名稱//
        system("iwconfig wlan0 essid #entry_text");
        //希望能把ssid 帶入 #entry_text
        system("dhclient wlan0");
       
}

void entry( GtkWidget *widget,GtkWidget *entry )
{
        const gchar *entry_text;
          entry_text = gtk_entry_get_text (GTK_ENTRY (entry));
}

int main( int argc,char *argv[] )
{

GtkWidget *main_window;
GtkWidget *hbox;
GtkWidget *left_vbox;
GtkWidget *frame;
GtkWidget *alignment;
GtkWidget *scrolledwindow;
GtkWidget *treeview;
GtkWidget *ap_list_label;
GtkWidget *left_hbox;
GtkWidget *pass;
GtkWidget *exit;
GtkWidget *connect;
GtkWidget *right_vbox;
GtkWidget *assign_ap_label;
GtkWidget *entry;
GtkWidget *scan;
gint i,count,strength;
gchar ssid;

gtk_init (&argc, &argv);

main_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
hbox = gtk_hbox_new (FALSE, 0);
left_vbox = gtk_vbox_new (FALSE, 0);
frame = gtk_frame_new (NULL);
alignment = gtk_alignment_new (0.5, 0.5, 1, 1);
scrolledwindow = gtk_scrolled_window_new (NULL, NULL);
treeview = gtk_tree_view_new ();
ap_list_label = gtk_label_new (("<b>AP List</b>"));
left_hbox = gtk_hbox_new (FALSE, 0);
pass = gtk_button_new_with_mnemonic (("Pass"));
exit = gtk_button_new_with_mnemonic (("Exit"));
connect = gtk_button_new_with_mnemonic (("Connect"));
right_vbox = gtk_vbox_new (FALSE, 0);
assign_ap_label = gtk_label_new (("AP Name"));
entry = gtk_entry_new ();
scan = gtk_button_new_with_mnemonic (("Scan AP"));

gtk_container_add (GTK_CONTAINER (main_window), hbox);
gtk_container_add (GTK_CONTAINER (frame),alignment);
gtk_container_add (GTK_CONTAINER (scrolledwindow), treeview);
gtk_container_add (GTK_CONTAINER (alignment), scrolledwindow);

gtk_box_pack_start (GTK_BOX (hbox),left_vbox, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (left_vbox),frame, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (left_vbox), left_hbox, FALSE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (left_hbox),pass, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (left_hbox),exit, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (left_hbox),connect, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbox), right_vbox, FALSE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (right_vbox), assign_ap_label, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (right_vbox), entry, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (right_vbox), scan, FALSE, FALSE, 0);

gtk_entry_set_max_length (GTK_ENTRY (entry), 3);

gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);

gtk_frame_set_label_widget (GTK_FRAME (frame), ap_list_label);

gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 0, 0, 12, 0);

gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolledwindow), GTK_SHADOW_IN);

gtk_label_set_use_markup (GTK_LABEL (ap_list_label), TRUE);

gtk_window_set_default_size(GTK_WINDOW(main_window), 500, 250);

gtk_widget_set_size_request (right_vbox, 300, -1);
gtk_widget_set_size_request (left_hbox, -1, 60);
gtk_widget_set_size_request (scan, -1, 80);
gtk_widget_set_size_request (entry, -1, 50);

gtk_widget_show_all (main_window);

g_signal_connect_swapped (G_OBJECT (scan), "clicked", G_CALLBACK (iwlist), main_window);
g_signal_connect ((gpointer) exit, "clicked",G_CALLBACK (gtk_main_quit),NULL);
g_signal_connect (G_OBJECT (entry), "activate",G_CALLBACK (entry),entry);

////////////////////////////////////////////////////////////////////////////////////////////////
GtkTreeModel* create_model()
{

    GtkListStore  *store= gtk_list_store_new (n_cols,G_TYPE_STRING,G_TYPE_UINT,G_TYPE_STRING);;
    return GTK_TREE_MODEL(store);
}
void list_view(GtkWidget* treeview)
{
    GtkCellRenderer* renderer= gtk_cell_renderer_text_new ();;

    gtk_tree_view_insert_column_with_attributes(
        GTK_TREE_VIEW(treeview), -1, "ESSID", renderer, "text", col_ssid, NULL);
    gtk_tree_view_insert_column_with_attributes(
        GTK_TREE_VIEW(treeview), -1, "STRENGTH", renderer, "text", col_strength, NULL);
    gtk_tree_view_insert_column_with_attributes(
        GTK_TREE_VIEW(treeview), -1, "Security", renderer, "text", col_security, NULL);
}

void list(GtkTreeModel* store,const gchar* ssid, const guint strength,const gchar* security )
{

    gtk_list_store_append(GTK_LIST_STORE(store), &iter);

    gtk_list_store_set(GTK_LIST_STORE(store), &iter,
                       col_ssid, ssid,
                       col_strength, strength,
                       col_security, security,
                       -1);
}
    list_view(treeview);

    GtkTreeModel* store = create_model();
    gtk_tree_view_set_model ( GTK_TREE_VIEW(treeview),  store);
    list(store,"ssid",strength,"secutiry");
    g_object_unref( store );
///////////////////////////////////////////////////////////////////////////////////
gtk_main ();

return 0;
}

**********************************************************************************************

請問一下,我想把拿到得ssid 名稱填到treeview 裡面,我應該怎麼做阿?
並且能訂時更新?

謝謝