Re: activating a button

[Jonathan Blandford <jrb redhat com>]

"Chandrashekhar V. Joshi" <cvj telco co in> writes:
>       oh yes. actually u can emit a button_press and button_release signal
>       but following should work except that queue_draw may not update
>       your ui as u are in the event dispatch thread till ur function
>       completes
>
>       gtk_widget_set_state (GTK_WIDGET (button), GTK_STATE_NORMAL);
>       gtk_widget_queue_draw (GTK_WIDGET (button));
>
>       // ur implementation here
>
>       gtk_widget_set_state (GTK_WIDGET (button), GTK_STATE_NORMAL);
>       gtk_widget_queue_draw (GTK_WIDGET (button));

That won't work either.  If you really want to get the appearance of a
button pressed, you'll want to do something like the below.  However, I
really don't recommend it, as it's not the GTK+ way of doing things, and
will look odd.  Just closing the dialog box makes more sense.


#include <gtk/gtk.h>

static gint
timeout (GtkWidget *button)
{
  gtk_button_clicked (GTK_BUTTON (button));
  gtk_button_released (GTK_BUTTON (button));

  return FALSE;
}

static void
activate_cb (GtkWidget *entry, GtkWidget *button)
{
  gtk_button_pressed (GTK_BUTTON (button));

  gtk_widget_set_state (button, GTK_STATE_ACTIVE);
  gtk_timeout_add (500, (GtkFunction) timeout, button);
}

static void
clicked_cb (GtkWidget *button1, GtkWidget *button)
{
  g_print ("clicked!\n");
}

int
main(int argc, char *argv[])
{
        GtkWidget *window;
        GtkWidget *vbox;
        GtkWidget *entry;
        GtkWidget *button;

        gtk_init (&argc, &argv);

        window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
        vbox = gtk_vbox_new (FALSE, 10);
        gtk_container_add (GTK_CONTAINER (window), vbox);
        entry = gtk_entry_new ();
        button = gtk_button_new_with_label ("button 2");
        gtk_box_pack_start_defaults (GTK_BOX (vbox), entry);
        gtk_box_pack_start_defaults (GTK_BOX (vbox), button);

        gtk_signal_connect (GTK_OBJECT (entry), "activate", activate_cb, button);
        gtk_signal_connect (GTK_OBJECT (button), "clicked", clicked_cb, NULL);
        gtk_widget_show_all (window);
        gtk_main();
        return 0;
}