drawing on window using gtk 2.0 - c

Question

I have a program using pthreads. I want add an interface using gtk2.0, but have a problem with drawing on window. When I call g_signal_connect(G_OBJECT(window), "configure_event",G_CALLBACK(draw_things), NULL);
lines which I draw appear and at once disappear. If I move a window calling function
gtk_window_move (GTK_WINDOW(widget), 10,10);
or by means of a mouse, lines appear. If I call g_signal_connect(G_OBJECT(window), "expose_event", G_CALLBACK(draw_things), NULL); my lines are displayed correctly, but buttons and labels are not displayed. My code looks like this:
int main(int argc, char *argv[]){
pthread_t tr1;
pthread_t tr2;
pthread_t *trs;
int rc = 0;
type j;
int16_t *id;
type Stop_Point;
GtkWidget *window;
GtkWidget *button;
GtkWidget *table;
GtkWidget *drawing_area;
g_thread_init (NULL);
gdk_threads_init ();
gdk_threads_enter ();
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_size_request(window, width/1.6, height/1.33);
gtk_window_set_position(GTK_WINDOW(window), -1);
gtk_window_set_title (GTK_WINDOW (window), "Window");
g_signal_connect (G_OBJECT (window), "delete_event", G_CALLBACK (delete_event), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 2);
table = gtk_table_new ( width/1.6, height/1.33, TRUE);
gtk_container_add (GTK_CONTAINER (window), table);
button = gtk_button_new_with_label ("next >>");
gtk_table_attach_defaults (GTK_TABLE (table), button, 1110, 1190, 750, 790);
gtk_widget_show (button);
button = gtk_button_new_with_label ("<< prev");
gtk_table_attach_defaults (GTK_TABLE (table), button, 1020, 1100 , 750, 790);
gtk_widget_show (button);
rc = pthread_create(&tr1, NULL, tr1_func, &id);
rc = pthread_create(&Generator, NULL, tr2_func, &Stop_Point);
trs = (pthread_t*)malloc(Num * sizeof(pthread_t));
for(j = 0; j < Num; j++) {
rc = pthread_create(trs + j, NULL, trs_func, id + j);
}
// g_signal_connect(G_OBJECT(window), "configure-event", GTK_SIGNAL_FUNC(draw_things), NULL);
g_signal_connect(G_OBJECT(window), "expose_event", G_CALLBACK(draw_things), NULL);
gtk_widget_show_all (window);
gtk_main ();
gdk_threads_leave ();
return 0;
}
Fnction for drawing looks like this
gboolean draw_things(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
GdkGC *gc;
gc=gdk_gc_new(GDK_DRAWABLE(widget->window));
gdk_gc_set_line_attributes(gc, 5, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND);
gdk_draw_line(GDK_DRAWABLE(widget->window), gc, 5, 35, 1200, 35);
gdk_draw_line(GDK_DRAWABLE(widget->window), gc, 1170, 45, 1200, 35);
gdk_draw_line(GDK_DRAWABLE(widget->window), gc, 1170, 25 , 1200, 35);
// gtk_window_move (GTK_WINDOW(widget), 1,1);
return TRUE;
}
Any help is welcomed, because now I use "configure_event" and call gtk_window_move (GTK_WINDOW(widget), 0,0); every time when I need to draw the picture.