SetSPFFHeaderItem

This call can be used to write a specific header item, the source code example is larger to show and explain how this call can be used.

Syntax

C++ 32 bit

C++ 64 bit

C# 32 bit

C# 64 bit

public const string ifcenginedll = @"ifcengine.dll";

[DllImport(ifcenginedll, EntryPoint = "SetSPFFHeaderItem")]
public static extern Int32 SetSPFFHeaderItem(int_t model, int_t itemIndex, int_t itemSubIndex, int_t valueType, string value);

[DllImport(ifcenginedll, EntryPoint = "SetSPFFHeaderItem")]
public static extern Int32 SetSPFFHeaderItem(int_t model, int_t itemIndex, int_t itemSubIndex, int_t valueType, byte[] value);

Property model

Size: 32 bit / 4 byte (value)
The handle to the model. The model handle is static during its existance. Several models can be opened simultaniously within one session. Different models are always independent, threads are allowed to be running on different models simultaniously.

Property itemIndex

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

Property itemSubIndex

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

Property valueType

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

Property value

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

Example (based on pure API calls)

Here you can find code snippets that show how the API call SetSPFFHeaderItem can be used.

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

string ifcFileName = "myFileName", timeStamp = "current date and time";

...
...

//  set Description
RDF.IFCEngine.SetSPFFHeaderItem(model, 0, 0, RDF.IFCEngine.sdaiUNICODE, System.Text.Encoding.Unicode.GetBytes("ViewDefinition [CoordinationView]"));
RDF.IFCEngine.SetSPFFHeaderItem(model, 0, 1, RDF.IFCEngine.sdaiSTRING, null as string);
//  set Implementation Level
RDF.IFCEngine.SetSPFFHeaderItem(model, 1, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("2;1"));
//  set Name
RDF.IFCEngine.SetSPFFHeaderItem(model, 2, 0, RDF.IFCEngine.sdaiUNICODE, System.Text.Encoding.Unicode.GetBytes(ifcFileName));
//  set Time Stamp
RDF.IFCEngine.SetSPFFHeaderItem(model, 3, 0, RDF.IFCEngine.sdaiUNICODE, System.Text.Encoding.Unicode.GetBytes(timeStamp));
//  set Author
RDF.IFCEngine.SetSPFFHeaderItem(model, 4, 0, RDF.IFCEngine.sdaiUNICODE, System.Text.Encoding.UTF8.GetBytes("Architect"));  //  It is allowed to mix sdaiUNICODE and sdaiSTRING
RDF.IFCEngine.SetSPFFHeaderItem(model, 4, 1, RDF.IFCEngine.sdaiSTRING, null as string);                                    //  as long as each call is consitent in itself.
//  set Organization
RDF.IFCEngine.SetSPFFHeaderItem(model, 5, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("Building Designer Office"));
//  set Preprocessor Version
RDF.IFCEngine.SetSPFFHeaderItem(model, 6, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("IFC Engine DLL"));
//  set Originating System
RDF.IFCEngine.SetSPFFHeaderItem(model, 7, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("Documentation Example"));
//  set Authorization
RDF.IFCEngine.SetSPFFHeaderItem(model, 8, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("The authorising person"));
//  set File Schema
RDF.IFCEngine.SetSPFFHeaderItem(model, 9, 0, RDF.IFCEngine.sdaiSTRING, System.Text.Encoding.UTF8.GetBytes("IFC4"));
RDF.IFCEngine.SetSPFFHeaderItem(model, 9, 1, RDF.IFCEngine.sdaiSTRING, null as string);