engiGetAttrTypeByIndex

This call can be used to retrieve the type of the n-th argument of the given entity. In case of a select argument no relevant information is given by this call as it depends on the instance. Arguments of parent entities are included in the index. Both explicit and inverse attributes are included.

Syntax

C++ 32 bit

C++ 64 bit

C# 32 bit

C# 64 bit

public const string enginedll = @"engine.dll";

[DllImport(enginedll, EntryPoint = "engiGetAttrTypeByIndex")]
public static extern void x86_engiGetAttrTypeByIndex(Int32 entity, Int32 index, out Int32 attributeType);

[DllImport(enginedll, EntryPoint = "engiGetAttrTypeByIndex")]
public static extern void x64_engiGetAttrTypeByIndex(Int64 entity, Int64 index, out Int64 attributeType);

public static void engiGetAttrTypeByIndex(Int64 entity, Int64 index, out Int64 attributeType)
		{
			if (IntPtr.Size == 4)
			{
				x86_engiGetAttrTypeByIndex((Int32)entity, (Int32)index, out Int32 _attributeType);
				attributeType = _attributeType;
			}
			else
			{
				x64_engiGetAttrTypeByIndex(entity, index, out attributeType);
			}
		}

Property entity

Size: 32 bit / 4 byte (value)
...

Property index

Size: 32 bit / 4 byte (value)
...

Property attributeType

Size: 32 bit / 4 byte (reference)
...

Example (based on pure API calls)

Here you can find code snippits that show how the API call engiGetAttrTypeByIndex can be used.

using RDF;      //  include at least engine.cs within your solution

Int64 WriteEntityStructure(Int64 ifcEntity)
{
    if (ifcEntity != 0)
    {
        //
        //  Iterate over the parents
        //
        Int64 attributeCnt = WriteEntityStructure(ifcengine.engiGetEntityParent(ifcEntity));

        //
        //  Print Entity name
        //
        IntPtr entityName = ifcengine.engiGetEntityName(ifcEntity);
        Console.WriteLine("Entity  " + entityName);

        //
        //  Walk over attributes
        //
        while  (attributeCnt < ifcengine.engiGetEntityNoArguments(ifcEntity)) {
            string attributeName = ifcengine.engiGetEntityArgumentName(ifcEntity, attributeCnt);
            Int64 attributeType = 0;
            ifcengine.engiGetEntityArgumentType(ifcEntity, attributeCnt, out attributeType);

            Console.Write("  " + attributeName + "  ");
            switch  (attributeType) {
                case  ifcengine.sdaiSTRING:
                    Console.WriteLine("STRING");
                    break;

                ...

                default:
                    break;
            }

            attributeCnt++;
        }

        return  attributeCnt;
    }

    return  0;
}