Re: change value of an adjustment

[Suleyman <sgulsuner hekim net>]

> Try setting the value after creating the adjustment and widget:
>
> GtkAdjustment *adj1;
>
> adj1 = (GtkAdjustment *)gtk_adjustment_new(87, 87, 109, 0.1, 0.05,
0.05);
> hscale2 = gtk_hscale_new(adj1);
> gtk_pack_to_something(somewhere, hscale2);
> gtk_widget_show(hscale2);
>
> /* Later on... */
>
> adj1 = gtk_range_get_adjustment(GTK_RANGE(hscale2));
> gtk_adjustment_set_value(adj1, 50);     /* Set value. */
> gtk_adjustment_value_changed(adj1);     /* Realize changes. */

hi, I'm trying this with that code, But it doesn't work.  May be I can't

explain my problem first message.
this code may be more open?
any idea?

#include <gtk/gtk.h>

void change_adj (GtkScale *hscale, GtkAdjustment *set,
GtkAdjustment *adj ) {
adj = gtk_range_get_adjustment(GTK_RANGE(hscale));
gtk_adjustment_set_value(adj, 50);     /* Set value. */
gtk_adjustment_value_changed(adj);

}

int main( int argc, char *argv[] )
{
  GtkWidget *hscale;
  GtkObject *adj;
  GtkWidget *window;
  GtkWidget *table;

  GtkWidget *button;

  gtk_init( &argc, &argv );

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_object_set_data (GTK_OBJECT (window), "window", window);
  gtk_widget_set_uposition (window, 250, 250);
  gtk_widget_set_usize (window, 400, 120);

  table = gtk_table_new (2, 2, FALSE);
  gtk_widget_show (table);
  gtk_container_add (GTK_CONTAINER (window), table);

  adj= gtk_adjustment_new(87, 87, 109, 0.1, 0.05, 0.05);
  hscale = gtk_hscale_new(GTK_ADJUSTMENT (adj));
  gtk_scale_set_digits (GTK_SCALE (hscale), 2);
  gtk_range_set_update_policy (GTK_RANGE (hscale),
                                  GTK_UPDATE_CONTINUOUS);
  gtk_table_attach (GTK_TABLE (table), hscale, 0,2 , 0, 1,
                    (GtkAttachOptions) (GTK_EXPAND | GTK_FILL),
                    (GtkAttachOptions) (GTK_EXPAND | GTK_FILL), 0, 0);
  gtk_widget_show (hscale);

  button = gtk_button_new_with_label ("100");
  gtk_widget_show (button);
  gtk_table_attach (GTK_TABLE (table), button, 0, 2, 1, 2,
                    (GtkAttachOptions) (GTK_EXPAND | GTK_FILL),
                    (GtkAttachOptions) (0), 0, 0);
  gtk_signal_connect (GTK_OBJECT (button), "clicked",
                      GTK_SIGNAL_FUNC (change_adj),
                      NULL);

  gtk_widget_show_all(window);
  gtk_main();
  return(0);

}




--
Suleyman Gulsuner
Dokuz Eylul Universitesi
TIp Fakultesi
Inciralti/IZMIR

                         Love& Respect& Linux
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