Re: Delayed events

["Tadej Borovšak" <tadeboro gmail com>]

Hi.

I've modified your example a bit to give you a kick start with this problem.

== test.c ==
#include <gtk/gtk.h>
#include <stdio.h>

void on_combobox1_changed (GtkComboBox *widget, GtkWidget *window)
{
	GtkTreeIter   iter;
	GtkTreeModel *model;
	gchar        *color;
	GdkColor      gcolor;

	gtk_combo_box_get_active_iter( widget, &iter );
	model = gtk_combo_box_get_model( widget );
	gtk_tree_model_get( model, &iter, 0, &color, -1 );
	gdk_color_parse( color, &gcolor );
	g_free( color );
	gtk_widget_modify_bg( window, GTK_STATE_NORMAL, &gcolor );
}

int
main (int argc, char *argv[])
{
  GtkBuilder      *builder;
  GtkWidget       *window;

  gtk_init (&argc, &argv);

  builder = gtk_builder_new ();
  gtk_builder_add_from_file (builder, "test.xml", NULL);
  window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
  gtk_builder_connect_signals (builder, window);

  g_object_unref (G_OBJECT (builder));
  gtk_widget_show (window);

  gtk_main ();

  return 0;
}
== end test.c ==

== test.xml ==
<?xml version="1.0"?>
<!--Generated with glade3 3.4.5 on Thu Nov 27 00:27:12 2008 -->
<interface>
  <object class="GtkListStore" id="model1">
    <columns>
      <column type="gchararray"/>
    </columns>
    <data>
      <row>
        <col id="0">red</col>
      </row>
      <row>
        <col id="0">blue</col>
      </row>
      <row>
        <col id="0">green</col>
      </row>
    </data>
  </object>
  <object class="GtkWindow" id="window1">
    <signal handler="gtk_main_quit" name="destroy"/>
    <child>
      <object class="GtkVBox" id="vbox1">
        <property name="visible">True</property>
        <child>
          <object class="GtkComboBox" id="combobox1">
            <property name="visible">True</property>
            <signal handler="on_combobox1_changed" name="changed"/>
            <property name="model">model1</property>
            <child>
              <object class="GtkCellRendererText" id="renderer1"/>
              <attributes>
                <attribute name="text">0</attribute>
              </attributes>
            </child>
          </object>
        </child>
        <child>
          <object class="GtkLabel" id="label1">
            <property name="visible">True</property>
            <property name="label" translatable="yes">label</property>
          </object>
          <packing>
            <property name="position">1</property>
          </packing>
        </child>
        <child>
          <object class="GtkLabel" id="label2">
            <property name="visible">True</property>
            <property name="label" translatable="yes">label</property>
          </object>
          <packing>
            <property name="position">2</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>
== end test.xml ==


2008/11/26 Roy G. Biv <kroylar gmail com>:
> On Wed, Nov 26, 2008 at 8:03 AM, Nicola Fontana <ntd entidi it> wrote:
>> On Tue, 25 Nov 2008 21:26:54 -0800
>> "Roy G. Biv" <kroylar gmail com> wrote:
>>
>>> Hello everybody!
>>>
>>> I am just learning how to use GTK+ and have run into a problem.  After
>>> having followed Micah Carrick's Glade3 tutorial, I have learned that
>>> using GtkBuilder seems to be the best way to do things.  Therefore the
>>> method that he used in his tutorial is the how I'm doing it too.  On
>>> to my problem...
>>>
>>> I have created a window that contains a single combobox widget named
>>> combobox1.  In this combobox I have listed a few different colors.
>>> And in glade I set the a handler named "on_combobox1_changed" for the
>>> "changed" entry under GtkComboBox.
>>>
>>> My C program contains this function:
>>>
>>> void on_combobox1_changed (GtkComboBox *widget, gpointer user_data);
>>
>> My guess is you have something weird in your event loop: you
>> should post the code.
>>
>> Ciao
>> --
>> Nicola
>
> Thank you all for your help.
>
> I tried adding stderr to my printf function but it still seems to be
> buffered. Here is the code that I am working with:
>
> #include <gtk/gtk.h>
> #include <stdio.h>
>
> void on_combobox1_changed (GtkComboBox *widget, gpointer user_data) {
>   printf("on_combobox1_changed event");
> //    int hello = GPOINTER_TO_INT(user_data);
> //    printf("%d", hello);
> //    GtkWidget window = GTK_WIDGET( widget );
>   GdkColor color;
> //    gdk_color_parse(gtk_combo_box_get_active_text(widget), &color);
>   gdk_color_parse("blue", &color);
>   gtk_widget_modify_bg (GTK_WIDGET (widget), GTK_STATE_NORMAL, &color);
> }
>
> void
> on_window_destroy (GtkObject *object, gpointer user_data)
> {
>   printf("on_window_destroy event");
>   gtk_main_quit ();
> }
>
> int
> main (int argc, char *argv[])
> {
> //    GtkWidget *combobox1;
>   GtkBuilder      *builder;
>   GtkWidget       *window;
>   GdkColor red;
>
>   gtk_init (&argc, &argv);
>
>   builder = gtk_builder_new ();
>   gtk_builder_add_from_file (builder, "testcolor1.xml", NULL);
>   window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
>   gdk_color_parse ("red", &red);
>   gtk_widget_modify_bg (window, GTK_STATE_NORMAL, &red);
>   gtk_builder_connect_signals (builder, NULL);
> //    GtkComboBox *combobox1 = GTK_COMBO_BOX (builder);
> //    g_signal_connect(G_OBJECT(combobox1), "clicked", G_CALLBACK
> (on_combobox1_changed), NULL);
>
>   g_object_unref (G_OBJECT (builder));
>   gtk_widget_show (window);
> //    gtk_widget_modify_bg (window, GTK_STATE_NORMAL, red);
>
>   gtk_main ();
>
>   return 0;
> }
>
> -Roy
> _______________________________________________
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> gtk-app-devel-list gnome org
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>



-- 
Tadej Borovšak
00386 (0)40 613 131
tadeboro gmail com
tadej borovsak gmail com