[ Programming object in C ] Problem with the static DiaObject myObject_create(...) function

[Jonathan CHABOISSIER <jonathan chaboissier thalesgroup com>]

Hello world. I am new on this mail list. I am currently a trainee and my mission is to program new objects for DIA.

I have red all the documents I found and I understand now how to create my own object. However, I have some problems.

Today's one is this :

In my function  static DiaObject myObject_create(...) called when my object is created by DIA in order to allocate memory, all the properties are not
initialised like I want. I also found in object/standard/box.c the same problem :

static DiaObject *
box_create(Point *startpoint,
	   void *user_data,
	   Handle **handle1,
	   Handle **handle2)
{
  Box *box;
  Element *elem;
  DiaObject *obj;
  int i;

  box = g_malloc0(sizeof(Box));
  elem = &box->element;
  obj = &elem->object;
  
  obj->type = &box_type;

  obj->ops = &box_ops;

  elem->corner = *startpoint;
  elem->width = DEFAULT_WIDTH;
  elem->height = DEFAULT_HEIGHT;

  box->border_width =  attributes_get_default_linewidth();
  box->border_color = attributes_get_foreground();
  box->inner_color = attributes_get_background();
  attributes_get_default_line_style(&box->line_style, &box->dashlength);
  /* For non-default objects, this is overridden by the default */                           
  box->show_background = default_properties.show_background;			// <--- HERE !
  box->corner_radius = default_properties.corner_radius;			// <--- HERE
  box->aspect = default_properties.aspect;					// <--- AND HERE AGAIN
  element_init(elem, 8, NUM_CONNECTIONS);

  for (i=0;i<NUM_CONNECTIONS;i++) {
    obj->connections[i] = &box->connections[i];
    box->connections[i].object = obj;
    box->connections[i].connected = NULL;
  }
  box->connections[8].flags = CP_FLAGS_MAIN;

  box_update_data(box);

  *handle1 = NULL;
  *handle2 = obj->handles[7];  
  return &box->element.object;
}

The show_background, corner_radius and aspect properties are not correctly given (contrary to the other properties).

Indeed, if you try to write instead :

box->show_background = FALSE;
box->corner_radius = 5.0;
box->aspect = 1;

it will not change anything...

I have this problem in my own objects, sometimes there is a radius default value altought I would like not, often I give a defaultvalue to a string but it does not work...

I am working on Win 2K pro, with the Dia 0.942+CVS Version (may be compiled by the previous trainee).

Do you know where the problem come from ? Thanks (i am going to eat and i will read the answers in the afternoon).

P.S. : I apologize for my english mystake, I come from France and I do the best I can.