File IO API Calls
Schema Reading API Calls
Instance Header API Calls
Instance Reading API Calls
Instance Writing API Calls
Controling API Calls
Uncategorized API Calls
Geometry Kernel related API Calls
Deprecated API Calls (GENERIC)
Validation
Deprecated API Calls (GEOMETRY)

sdaiGetInstanceAttrBN

This function is a specific version of sdaiGetAttrBN(..), where the valueType is sdaiINSTANCE. This call can be usefull 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 sdaiGetInstanceAttrBN will transform into the following call

    SdaiInstance    inst = 0;
    sdaiGetAttr(
            instance,
            sdaiGetAttrDefinition(
                    sdaiGetInstanceType(
                            instance
                        ),
                    attributeName
                ),
            sdaiINSTANCE,
            &inst
        );
    return  inst;

Syntax

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

[DllImport(IFCEngineDLL, EntryPoint = "sdaiGetInstanceAttrBN")]
public static extern Int64 sdaiGetInstanceAttrBN(int_t instance, string attributeName);

[DllImport(IFCEngineDLL, EntryPoint = "sdaiGetInstanceAttrBN")]
public static extern Int64 sdaiGetInstanceAttrBN(int_t instance, byte[] attributeName);

Property instance

Size: 64 bit / 8 byte (value)
...

Property attributeName

Size: 64 bit / 8 byte (reference)
...