问GtkEntry与"editing_done“信号

EN

gboolean device_entry_activate_cb (GtkWidget *widget, gpointer data)
{
    const gchar *text;

    text = gtk_entry_get_text (GTK_ENTRY (entry));

    if (!strcmp( DEVICE, text )
        return FALSE;

    if ( DEVICE )
        g_free( DEVICE );

    DEVICE = g_strdup( text );

    if (0 == strcmp(DEVICE, "auto"))

    /* do something: start printer for example */

    return FALSE;
}

void device_entry_auto_activate_cb(GtkEntry* entry, const gchar* text, gpointer data)
{
    GtkEditable *editable = GTK_EDITABLE (entry);

    text = gtk_entry_get_text (GTK_ENTRY ( entry));

    if (0 == strcmp(text, ""))
        g_signal_emit_by_name(G_OBJECT (editable), "activate");

}

    g_signal_connect(G_OBJECT(entry), "hide", G_CALLBACK(device_entry_activate_cb), app);
    g_signal_connect(G_OBJECT(entry), "activate", G_CALLBACK(device_entry_activate_cb), NULL);
    g_signal_connect(G_OBJECT(entry), "changed", G_CALLBACK(device_entry_auto_activate_cb), NULL);