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suresha
Guest

Guest

Joined: 17 Sep 2009
Posts: 3
Location: Melbourne

Posted: Thu Sep 24, 2009 3:18 am Post subject: Using API_RoomRelation structure

I am newbie here. Trying to write a program to Cycle through all the Zones. Find related objects in each Zone and Modify a Parameter.

Following is part of the code.

Code:

static GSErrCode CycleZoneObjects ( const long index, const char *floor_param, const char *floor_type )
{
GSErrCode          lastErr;
API_RoomRelation relData;
API_ElemTypeID       typeID;
long ind;
char             buffer[256];
API_Element          element;
API_ElementMemo       memo;

typeID = API_ObjectID;

lastErr = ACAPI_Element_GetRelations (API_ZoneID, index,
   typeID, &relData);

if ( lastErr != NoError )
      return lastErr;
sprintf ( buffer, "Found %d Related Objects", relData.nObject );
WriteReport_Alert( buffer, true );
//continue;
{

   for ( ind=0; ind < relData.nObject; ind++)
   {
      BNZeroMemory (&element, sizeof (API_Element));
      element.header.typeID = typeID;
      element.header.index = (long) relData.objects[ind];
//Here the object index I get seems to be invalid.
      lastErr = ACAPI_Element_Get ( &element );
      if (lastErr == NoError )
      {
         lastErr = ACAPI_Element_GetMemo_Masked ( element.header.typeID, element.header.index, APIMemoMask_AddPars, &memo);
         SetFloorParValue ( &memo.params, floor_param, floor_type);
         ACAPI_DisposeElemMemoHdls (&memo);
      }
      if (lastErr != NoError )
         WriteReport_Alert("ACAPI_Element_Get/Memo in ZoneObjects Error", true );
   }
}

ACAPI_DisposeRoomRelationHdls (&relData);
return lastErr;
}

static GSErrCode CycleZones ( void)
{
GSErrCode lastErr;
API_ElemTypeID typeID;
API_Element    elem;
API_ElementMemo elemMemo;
long nElem, i;
char       floor_param[] = "floor_f";
char       floor_type[50];
char       buffer[256];

typeID = API_ZoneID;
lastErr = ACAPI_Element_GetNum (typeID, &nElem);
if (lastErr != NoError)
   return lastErr;

sprintf ( buffer, "Found %ld Zones", nElem );
WriteReport_Alert( buffer, true );

for (i = 1; i <= nElem && !lastErr; i++)
{
   if (!ACAPI_Element_Filter (typeID, i, APIFilt_OnVisLayer | APIFilt_OnActFloor))
      continue;

   BNZeroMemory (&elem, sizeof (API_Element));

   elem.header.typeID = typeID;
   elem.header.index = i;
   lastErr = ACAPI_Element_Get (&elem);
   if (lastErr == NoError && elem.header.hasMemo)
   {
      lastErr = ACAPI_Element_GetMemo_Masked ( typeID, i, APIMemoMask_AddPars, &elemMemo);
      /* Custom element processing */
      GetFloorParValue ( &elemMemo.params, floor_param, floor_type);
      if (CHEqualASCII(floor_type, "Tiles", CS_CaseInsensitive) ||
         CHEqualASCII(floor_type, "Carpet", CS_CaseInsensitive) )
      {
         sprintf(buffer, "The floor type is %s\n", floor_type);
         WriteReport_Alert(buffer, true);
         CycleZoneObjects ( elem.header.index, floor_param, floor_type );
      }
      ACAPI_DisposeElemMemoHdls (&elemMemo);
   }
}
return lastErr;
}

static void DoZoneCycling (void)

{
CycleZones();
return;

}

I am having trouble getting the right object index from API_RoomRelation structure. When I pass the object index to ACAPI_Element_Get, I am getting error 13 which is not in the error list.

Also, I get the number of objects as 4 when there is only one object in the zone (3 more than the actual objects).

This is on ArchiCAD 10 using API 10.22
_________________
Suresh

Ralph Wessel

Veteran member

Joined: 06 Nov 2003
Posts: 791
Location: United Kingdom

Posted: Thu Sep 24, 2009 10:09 am Post subject: Re: Using API_RoomRelation structure

suresha wrote:

Code:

      element.header.index = (long) relData.objects[ind];
//Here the object index I get seems to be invalid.
      lastErr = ACAPI_Element_Get ( &element );

When I pass the object index to ACAPI_Element_Get, I am getting error 13 which is not in the error list.

The error is actually 1 line above where you discover the problem. relData.objects is a handle, not a pointer, so you have to dereference it twice. That's why you have had to cast the value as (long) - the compiler was actually giving you a useful warning there.

So instead of:

Code:

element.header.index = (long) relData.objects[ind];

...you should write:

Code:

element.header.index = (*relData.objects)[ind];

_________________
Ralph Wessel
Encina Ltd
Design Software Solutions
Web: www.encina.co.uk

suresha
Guest

Guest

Joined: 17 Sep 2009
Posts: 3
Location: Melbourne

Posted: Thu Sep 24, 2009 12:40 pm Post subject: Re: Using API_RoomRelation structure

Thank you very much Ralph!! Regards, _________________ Suresh

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