GetSPFFHeaderItem

This call can be used to read 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 = "GetSPFFHeaderItem")]
public static extern Int32 GetSPFFHeaderItem(int_t model, int_t itemIndex, int_t itemSubIndex, int_t valueType, out IntPtr 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 snippits that show how the API call GetSPFFHeaderItem can be used.

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

//...

using System.Runtime.InteropServices;   //  To support Marshal

namespace abc
{
    public class myClass
    {
        void GetHeaderDescription(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            if (ifcengine.GetSPFFHeaderItem(model, 0, i, ifcengine.sdaiUNICODE, out textPtr) != 0)
            {
                while (ifcengine.GetSPFFHeaderItem(model, 0, i++, ifcengine.sdaiUNICODE, out textPtr) != 0)
                {
                    string text = Marshal.PtrToStringUni(textPtr);
                }
            }
        }

        void GetImplementationLevel(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 1, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetName(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 2, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetTimeStamp(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 3, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetAuthor(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            if (ifcengine.GetSPFFHeaderItem(model, 4, i, ifcengine.sdaiUNICODE, out textPtr) != 0)
            {
                while (ifcengine.GetSPFFHeaderItem(model, 4, i++, ifcengine.sdaiUNICODE, out textPtr) != 0)
                {
                    string text = Marshal.PtrToStringUni(textPtr);
                }
            }
        }

        void GetOrganization(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            if (ifcengine.GetSPFFHeaderItem(model, 5, i, ifcengine.sdaiUNICODE, out textPtr) != 0)
            {
                while (ifcengine.GetSPFFHeaderItem(model, 5, i++, ifcengine.sdaiUNICODE, out textPtr) != 0)
                {
                    string text = Marshal.PtrToStringUni(textPtr);
                }
            }
        }

        void GetPreprocessorVersion(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 6, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetOriginatingSystem(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 7, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetAuthorization(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            ifcengine.GetSPFFHeaderItem(model, 8, 0, ifcengine.sdaiUNICODE, out textPtr);
            string text = Marshal.PtrToStringUni(textPtr);
        }

        void GetFileSchema(Int64 model)
        {
            Int64 i = 0;
            IntPtr textPtr = IntPtr.Zero;
            if (ifcengine.GetSPFFHeaderItem(model, 9, i, ifcengine.sdaiUNICODE, out textPtr) != 0)
            {
                while (ifcengine.GetSPFFHeaderItem(model, 9, i++, ifcengine.sdaiUNICODE, out textPtr) != 0)
                {
                    string text = Marshal.PtrToStringUni(textPtr);
                }
            }
        }

        ...