GtkEntry ... change size

[Mariano Gaudix <marianocordobario3 gmail com>]

Hello
I can not  change the size to  GtkEntry  .  I am  using  Gtk 3.6 .
I need  a  GtkEntry  small  ,   for my   graphic   interface .


GtkWidget *entry = gtk_entry_new ();

 gtk_widget_set_size_request( entry , 20 , -1);

///////////////////////////////////////////////code
 ///////////////////////////////////

#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>

#include <string.h>  /* for css */


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

    GtkWidget *window;
    GtkWidget *vbox, *hbox;
    GtkWidget *toolbar;
    GtkWidget *button ,*boton ;
    GtkWidget *grid;
    gchar  *nodo;

char *str ;
GdkColor color;
 GdkColor color2;


    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_size_request (GTK_WIDGET (window), 300, 100);
    gtk_window_set_title (GTK_WINDOW (window), "GTK Entry");
    g_signal_connect (window, "destroy",
                      G_CALLBACK (gtk_main_quit), NULL);
    g_signal_connect_swapped (window, "delete-event",
                              G_CALLBACK (gtk_widget_destroy),
                              window);


/*-------------------------------------------------------------------------------------------------*/

 toolbar = gtk_toolbar_new();


  gtk_container_add (GTK_CONTAINER (window), toolbar);

 gtk_widget_set_size_request( toolbar, 50 , 60);


 gtk_toolbar_set_icon_size (GTK_TOOLBAR(toolbar),
 GTK_ICON_SIZE_SMALL_TOOLBAR);

 gtk_toolbar_set_show_arrow (GTK_TOOLBAR(toolbar) ,TRUE  );

/*-----------------------------------------------------------------------------------------------------*/

GtkToolItem *ka ;

ka = gtk_tool_item_new ()  ;

gtk_toolbar_insert (GTK_TOOLBAR (toolbar), ka , -1);


/*-----------------------------------------------------------------------------------------------------*/

 grid =gtk_grid_new () ;

gtk_container_add (GTK_CONTAINER (ka), grid);

/*-----------------------------------------------------------------------------------------------------*/

GtkWidget *entry = gtk_entry_new ();

gtk_grid_attach (GTK_GRID (grid), entry, 0, 0, 1, 1);


 gtk_widget_set_size_request( entry , 20 , -1);

/****************************************************************************/

 boton =gtk_toggle_button_new_with_label (" nodo" );

gtk_grid_attach (GTK_GRID (grid), boton, 1, 0, 1, 1) ;
/************************************************************************************/

    gtk_widget_show_all (window);

    gtk_main();

    return 0;
}