Re: How to put widget in CUSTOM GtkContainer

[AlannY <m alanny ru>]

Tomas Carnecky wrote:
> AlannY wrote:
> That still isn't the whole code! What does grid_class_init() do? Attach 
> both the whole grid header and source file to the email.

/* ********************************************** */

static void
grid_class_init (GridClass *class)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;

  object_class = (GtkObjectClass*) class;
  widget_class = (GtkWidgetClass*) class;

  parent_class = gtk_type_class (gtk_widget_get_type ());

  object_class->destroy = grid_destroy;

  widget_class->realize = grid_realize;
  widget_class->expose_event = grid_expose;
}

/* ********************************************** */
static void
grid_init (Grid *grid)
{
}

/* ********************************************** */
static void
grid_realize (GtkWidget *widget)
{
  Grid *grid;
  GdkWindowAttr attributes;
  gint attributes_mask;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (IS_GRID (widget));

  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
  grid = GRID (widget);

  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  attributes.wclass = GDK_INPUT_OUTPUT;
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.event_mask = gtk_widget_get_events (widget) | 
GDK_EXPOSURE_MASK;
  attributes.visual = gtk_widget_get_visual (widget);
  attributes.colormap = gtk_widget_get_colormap (widget);

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
  widget->window = gdk_window_new (widget->parent->window, &attributes, 
attributes_mask);

  widget->style = gtk_style_attach (widget->style, widget->window);

  gdk_window_set_user_data (widget->window, widget);

  gtk_style_set_background (widget->style, widget->window, 
GTK_STATE_ACTIVE);
}

/* ********************************************** */
static gboolean
grid_expose (GtkWidget *widget,
             GdkEventExpose *event)
{
  g_return_val_if_fail (widget != NULL, FALSE);
  g_return_val_if_fail (IS_GRID (widget), FALSE);
  g_return_val_if_fail (event != NULL, FALSE);

  if (event->count > 0)
    return FALSE;

  return FALSE;
}

/* ********************************************** */
static void
grid_destroy (GtkObject *object)
{
  g_return_if_fail (object != NULL);
  g_return_if_fail (IS_GRID (object));

  if (GTK_OBJECT_CLASS (parent_class)->destroy)
    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

/* ********************************************** */

That's all I have ;-)