gtk popup whose entries are being masked when pressing TAB

gtk_popup

#include <gtk/gtk.h>
#include <glib/gstdio.h>

/*
 * Network Configuration window being popped-up
 */
typedef struct network_conf_t
{
	GtkWidget *window 		 ;
	GtkWidget *vbox_frames 			 ;
	GtkWidget *recv_frame  			 ;
	GtkWidget *send_frame  			 ;
	GtkWidget *recv_frame_hbox 		 ;
	GtkWidget *recv_port_number_label;
	GtkWidget *recv_port_number_entry;
	GtkWidget *vbox 				 ;
	GtkWidget *hbox 				 ;
	GtkWidget *hbox2 				 ;
	GtkWidget * ip_address_label 	 ;
	GtkWidget * port_number_label 	 ;
	GtkWidget *ip_address_entry 	 ;
	GtkWidget *port_number_entry 	 ;
	
} network_conf;


unsigned int launch_netconf_popup()
{
	network_conf netconf;


	/*
	   Window configuration
	*/
	netconf.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_widget_set_events		   	( 			netconf.window , GDK_FOCUS_CHANGE_MASK);
	gtk_window_set_resizable		(GTK_WINDOW(netconf.window), FALSE);
	gtk_window_set_skip_taskbar_hint(GTK_WINDOW(netconf.window), TRUE );
	gtk_window_set_title			(GTK_WINDOW(netconf.window), "Network Configuration" );
  	gtk_window_set_skip_pager_hint  (GTK_WINDOW(netconf.window), TRUE );
	g_signal_connect(G_OBJECT (netconf.window), "delete-event", G_CALLBACK(gtk_main_quit), NULL);

	gtk_window_set_position 		(GTK_WINDOW(netconf.window), GTK_WIN_POS_MOUSE);


	
	netconf.vbox_frames = gtk_box_new  (GTK_ORIENTATION_VERTICAL, 2);
    netconf.recv_frame  = gtk_frame_new( "Receive Options");
	netconf.send_frame  = gtk_frame_new( "Send Options"	 );

    gtk_container_add (GTK_CONTAINER (netconf.window), 		   netconf.vbox_frames);
    gtk_container_add (GTK_CONTAINER (netconf.vbox_frames), 	netconf.recv_frame);
    gtk_container_add (GTK_CONTAINER (netconf.vbox_frames), 	netconf.send_frame);
    

	/*
	   Reception Port
	*/
	netconf.recv_frame_hbox 		  = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 20);
    netconf.recv_port_number_label = gtk_label_new ("Port :");
    netconf.recv_port_number_entry = gtk_entry_new_with_buffer( gtk_entry_buffer_new("10", 8  ) );
  
	//gtk_entry_set_alignment ( GTK_ENTRY(netconf.recv_port_number_entry), 0x1 );	
	

    gtk_container_add 	(GTK_CONTAINER (netconf.recv_frame), netconf.recv_frame_hbox);
	gtk_box_pack_start 	(GTK_BOX (netconf.recv_frame_hbox) , netconf.recv_port_number_label, FALSE, FALSE, 5);
	gtk_box_pack_end 	(GTK_BOX (netconf.recv_frame_hbox) , netconf.recv_port_number_entry, FALSE, FALSE, 5);

	/*
	   Send Port and IP
	*/
	netconf.vbox 				= gtk_box_new(GTK_ORIENTATION_VERTICAL	, 2 );
	netconf.hbox 				= gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 20);
	netconf.hbox2 				= gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 20);
    netconf.ip_address_label 	= gtk_label_new("IP address :"	);
    netconf.port_number_label 	= gtk_label_new( "Port :"		);
	netconf.port_number_entry 	= gtk_entry_new_with_buffer( gtk_entry_buffer_new("0", 8  ) );
	netconf.ip_address_entry 	= gtk_entry_new_with_buffer( gtk_entry_buffer_new("127.0.0.1", 16 ));


	//gtk_entry_set_alignment( GTK_ENTRY(netconf.ip_address_entry) , 0x1	);
	//gtk_entry_set_alignment( GTK_ENTRY(netconf.port_number_entry), 0x1	);	
	
    gtk_container_add (GTK_CONTAINER (netconf.send_frame), netconf.vbox );    
    gtk_container_add (GTK_CONTAINER (netconf.vbox)		 , netconf.hbox );
    gtk_container_add (GTK_CONTAINER (netconf.vbox)		 , netconf.hbox2);

	gtk_box_pack_start 	(GTK_BOX (netconf.hbox) , netconf.ip_address_label , FALSE, FALSE, 5);
	gtk_box_pack_start 	(GTK_BOX (netconf.hbox2), netconf.port_number_label, FALSE, FALSE, 5);
	gtk_box_pack_end 	(GTK_BOX (netconf.hbox) , netconf.ip_address_entry , FALSE, FALSE, 5);
	gtk_box_pack_end 	(GTK_BOX (netconf.hbox2), netconf.port_number_entry, FALSE, FALSE, 5);

    gtk_widget_show_all(netconf.window);


	return 0x00;
}



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

    gtk_init(0, NULL);

    launch_netconf_popup();
    
    gtk_main();
    return 0;
}