redirect GdkEvents

[Stefan Kost <ensonic hora-obscura de>]

hi,

I need to do a hack :( I once submitted this together with a pack, but its not
beeing accepted.
http://bugzilla.gnome.org/show_bug.cgi?id=338271

Now I try to do a workaround for my use case. I am already able to get the
events the button inside the treeview header got. I now I want the children in
the container (=button) to handle them instead. I am currentl trying with the
code below, but I can't get the widget on the column header to do something :(

Any ideas?
  Stfean


static void
forward_event(GtkWidget *widget,gpointer user_data) {
  gtk_widget_event(widget,(GdkEvent *)user_data);
}

static gboolean
on_column_header_event(GtkWidget *widget,GdkEvent *event,gpointer user_data)
{
  GtkWidget *child=GTK_WIDGET(user_data);
  puts("header widget parent event: type=0x%x\n",event->type);

  /* forward some events to child */
  switch(event->type) {
    case GDK_MOTION_NOTIFY:
    case GDK_BUTTON_PRESS:
    case GDK_BUTTON_RELEASE:
    case GDK_ENTER_NOTIFY:
    case GDK_LEAVE_NOTIFY:
      // this still does not cause the button clicks to work
      //gtk_widget_event(child,event);
      gtk_container_foreach(GTK_CONTAINER(child),forward_event,event);
      return(TRUE);
    default:
      break;
  }
  return(FALSE);
}


static void
on_header_realize(GtkWidget *widget,gpointer user_data)
{
  GtkTreeViewColumn *tree_col=GTK_TREE_VIEW_COLUMN(user_data);
  GtkWidget *button=tree_col->button;

  g_signal_handlers_disconnect_matched(button,G_SIGNAL_MATCH_DATA,0,0,
    NULL,NULL,tree_col);
  g_signal_connect(G_OBJECT(button),"event",G_CALLBACK(on_column_header_event),
    (gpointer)widget);
}