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)

engiGetAttrOptionalBN

This call can be used to check if an attribute is optional. Technically engiGetAttrOptionalBN will transform into the following call

    engiGetAttrOptional(
            sdaiGetAttrDefinition(
                    entity,
                    attributeName
                )
        );

Syntax

C++ 32 bit
C++ 64 bit
C# 32 bit
C# 64 bit
//
//   Strong typing definition
//
int_t           engiGetAttrOptionalBN(
                        SdaiEntity              entity,
                        const char              * attributeName
                    );

static  inline  int_t   engiGetAttrOptionalBN(
                                SdaiEntity              entity,
                                char                    * attributeName
                            )
{
    return  engiGetAttrOptionalBN(
                    entity,
                    (const char*) attributeName
                );
}


//
//   Weak typing definition
//
int_t   __declspec(dllexport) __stdcall engiGetAttrOptionalBN(
                                                int_t                   entity,
                                                const char              * attributeName
                                            );

static  inline  int_t   engiGetAttrOptionalBN(
                                int_t                   entity,
                                char                    * attributeName
                            )
{
    return  engiGetAttrOptionalBN(
                    entity,
                    (const char*) attributeName
                );
}

Property entity

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

Property attributeName

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