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sdaiGetAggregationAttrBN

This function is a specific version of sdaiGetAttrBN(..), where the valueType is sdaiAGGR. This call can be useful in case of specific programming languages that cannot map towards sdaiGetAttrBN(..) directly, this function is useless for languages as C, C++, C#, JAVA, VB.NET, Delphi and similar as they are able to map sdaiGetAttrBN(..) directly. Technically sdaiGetAggregationAttrBN will transform into the following call

    SdaiAggr    aggr = 0;
    sdaiGetAttr(
            instance,
            sdaiGetAttrDefinition(
                    sdaiGetInstanceType(
                            instance
                        ),
                    attributeName
                ),
            sdaiAGGR,
            &aggr
        );
    return  aggr;

Syntax

C++ 32 bit
C++ 64 bit
C# 32 bit
C# 64 bit
public const string ifcenginedll = @"ifcengine.dll";

[DllImport(IFCEngineDLL, EntryPoint = "sdaiGetAggregationAttrBN")]
public static extern Int32 sdaiGetAggregationAttrBN(int_t instance, string attributeName);

[DllImport(IFCEngineDLL, EntryPoint = "sdaiGetAggregationAttrBN")]
public static extern Int32 sdaiGetAggregationAttrBN(int_t instance, byte[] attributeName);

Property instance

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

Property attributeName

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