drawing_area->window!=NULL

["Andrés" Giraldo <andres_giraldo yahoo com>]

Hi!

I'm trying to create a new widget, this is my init
object function:

static void gtk_newlabel_init (GtkNewLabel *newlabel)
  {
    GtkWidget *table;
    GdkGC *gc;

    table = gtk_table_new (1, 1, TRUE);
    gtk_container_add (GTK_CONTAINER (newlabel),
table);
    gtk_widget_show (table);

    newlabel->drawing_area = gtk_drawing_area_new ();
    gtk_table_attach_defaults (GTK_TABLE(table),
newlabel->drawing_area, 0, 1, 0, 1);
    gtk_widget_show (newlabel->drawing_area);

    gc = GetPen (NewColor (0x0000, 0x0000, 0x0000),
newlabel->drawing_area->window);
  }


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

These functions, returns a GdkGC * color;

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

GdkGC *GetPen (GdkColor *c, GdkDrawable *drawable)
  {
    GdkGC *gc;

    gc = gdk_gc_new (drawable);

    gdk_gc_set_foreground (gc, c);

    return (gc);
  }

GdkColor *NewColor (long red, long green, long blue)
  {
    GdkColor *c = (GdkColor *) g_malloc (sizeof
(GdkColor));

    c->red = red;
    c->green = green;
    c->blue = blue;

    gdk_color_alloc (gdk_colormap_get_system (), c);

    return (c);
  }

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

The Widget structure

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

struct _GtkNewLabel
  {
    GtkVBox vbox;
 
    GtkWidget *drawing_area;
  };

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



Why Gdk returns:

 
Gdk-CRITICAL **: file gdkgc.c: line 51
(gdk_gc_new_with_values): assertion `window != NULL'
failed.
 
Gdk-CRITICAL **: file gdkgc.c: line 456
(gdk_gc_set_foreground): assertion `gc != NULL'
failed.

It doesn't work even if I show the
newlabel->drawing_area widget or not...

Why?
                                                      
                                                      


Thanks!

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