Re: Problem with GtkEntry

["Miguel Pignatelli" <pignatelli noraybio com>]

Thanks all for the comments,
Problem solved,

See you,

M

----- Original Message -----
From: "Olexiy Avramchenko" <olexiy irtech cn ua>
To: "Miguel Pignatelli" <pignatelli noraybio com>
Cc: <gtk-app-devel-list gnome org>
Sent: Thursday, November 13, 2003 12:10 PM
Subject: Re: Problem with GtkEntry


> Miguel Pignatelli wrote:
>
> > Hi,
> >
> > I have a problem with the widget GtkEntry. Please take a look to the
> > source code attached. It is a very simple program I am trying to run.
> > The problem is that I can't display the global variable where is
> > stored the text I got from de entry widget. I can't find the bug!!!
> >
> > What is wrong with this code?
> > Thanx in advance for any help.
>
> 1. Duplicate the string with g_strdup(), dont use just a pointer
> returned by gtk_entry_get_text(). Dont forget to call g_free() before
> g_strdup to avoid memory leaking.
> 2. Dont do anything related to widgets after gtk_main - at this point
> all widgets are destroyed. If you still want to print out the *option*
> variable - be sure its initialized (use "destroy" callback on entry).
>
>     Olexiy


----------------------------------------------------------------------------
----


> /* example-start radiobuttons radiobuttons.c */
>
> #include <gtk/gtk.h>
>
> gchar *option;
>
> /*----- Option Selection ----*/
> void selected_option (GtkWidget *widget, GtkWidget *entry)
> {
>     g_free (option);
>     option = g_strdup ( gtk_entry_get_text (GTK_ENTRY (entry)) );
>     g_print ("Iterations: %s\n", option);
> }
>
> static void entry_destroy_callback (GtkWidget *entry)
> {
>     g_free( option );
>     option = g_strdup ( gtk_entry_get_text (GTK_ENTRY (entry)) );
> }
>
> /*------- Closing Main Window ----------*/
> gint close_application( GtkWidget *widget,
>                         GdkEvent  *event,
>                         gpointer   data )
> {
>     gtk_main_quit();
>     return(FALSE);
> }
>
> /*--------- Closing the table --------------*/
> void CloseDialog (GtkWidget *widget, gpointer data)
> {
>     gtk_widget_destroy (widget);
> }
>
> GtkWidget *CreateTable ()
> {
>     GtkWidget *button;
>     GtkWidget *table;
>     GtkWidget *entry1;
>     GtkWidget *label1;
>
>     table = gtk_table_new (6, 4, FALSE);
>
>     entry1 = gtk_entry_new_with_max_length (10);
>
>     gtk_signal_connect (GTK_OBJECT (entry1), "activate",
> GTK_SIGNAL_FUNC (selected_option), entry1);
>     gtk_signal_connect (GTK_OBJECT (entry1), "destroy",
> GTK_SIGNAL_FUNC (entry_destroy_callback), entry1);
>
>     gtk_widget_show (entry1);
>
>     gtk_entry_set_text (GTK_ENTRY (entry1), "30");
>
>     gtk_table_attach_defaults (GTK_TABLE (table), entry1, 2, 3, 1, 2);
>
> /*--- Creating the label ---*/
>     label1 = gtk_label_new ("Option: ");
>     gtk_widget_show (label1);
>
>     gtk_table_attach_defaults (GTK_TABLE (table), label1, 1, 2, 1, 2);
>
> /*---- Creating "Accept" button ----*/
>     button = gtk_button_new_with_label ("Accept");
>     gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
>                                GTK_SIGNAL_FUNC(CloseDialog),
>                                GTK_OBJECT (table));
>     gtk_table_attach_defaults (GTK_TABLE (table), button, 2, 3, 5, 6);
>     GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
>     gtk_widget_grab_default (button);
>     gtk_widget_show (button);
>
>     return (table);
> }
>
> int main( int argc, char *argv[] )
> {
>     GtkWidget *window = NULL;
>     GtkWidget *table;
>
>     gtk_init(&argc,&argv);
>
>     window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>
>     gtk_signal_connect (GTK_OBJECT (window), "delete_event",
>                         GTK_SIGNAL_FUNC(close_application),
>                         NULL);
>
>     gtk_window_set_title (GTK_WINDOW (window), "DENIMPROT");
>     gtk_container_set_border_width (GTK_CONTAINER (window), 0);
>
>     table = CreateTable();
>
>     gtk_container_add (GTK_CONTAINER (window), table);
>
>     gtk_widget_show (table);
>     gtk_widget_show (window);
>
>     gtk_main();
>
>     g_print ("Iterations: %s\n", option);
>     return(0);
> }
> /* example-end */