CreatePropertyW
If the model input is zero or not a model handle 0 will be returned,
Syntax
public const string EngineDLL = @"engine.dll";[DllImport(EngineDLL, EntryPoint = "CreatePropertyW")] public static extern Int64 CreatePropertyW(Int64 model, Int64 rdfPropertyType, string name); [DllImport(EngineDLL, EntryPoint = "CreatePropertyW")] public static extern Int64 CreatePropertyW(Int64 model, Int64 rdfPropertyType, byte[] name);
Property model
Size: 64 bit / 8 byte (value)Property rdfPropertyType
Size: 64 bit / 8 byte (value)Property name
Size: 32 bit / 4 byte (reference)
Example
Here you can find code snippits that show how the API call CreatePropertyW can be used.
using Engine; static void Main(string[] args) { Int64 model = Engine.x86_64.CreateModel(); if (model != 0) { // // Classes // Int64 classCollection = Engine.x86_64.GetClassByNameW(model, System.Text.Encoding.Unicode.GetBytes("Collection")), classCube = Engine.x86_64.GetClassByNameW(model, System.Text.Encoding.Unicode.GetBytes("Cube")); // // Object Properties (relations) // Int64 propertyAbcd = Engine.x86_64.CreatePropertyW(model, Engine.x86_64.OBJECTPROPERTY_TYPE, System.Text.Encoding.Unicode.GetBytes("abcd")), propertyObjects = Engine.x86_64.GetPropertyByNameW(model, System.Text.Encoding.Unicode.GetBytes("objects")); // // Datatype Properties (attributes) // Int64 propertyLength = Engine.x86_64.GetPropertyByNameW(model, System.Text.Encoding.Unicode.GetBytes("length")), propertyEfgh = Engine.x86_64.CreatePropertyW(model, Engine.x86_64.DATATYPEPROPERTY_TYPE_DOUBLE, System.Text.Encoding.Unicode.GetBytes("efgh")); // // Instances (creating) // Int64 instanceCollection = Engine.x86_64.CreateInstance(classCollection, (string) null), instanceCube = Engine.x86_64.CreateInstance(classCube, (string) null); double length = 2.0, efgh = 1.7; Engine.x86_64.SetDatatypeProperty(instanceCube, propertyLength, ref length, 1); Engine.x86_64.SetDatatypeProperty(instanceCollection, propertyEfgh, ref efgh, 1); System.Diagnostics.Debug.Assert(Engine.x86_64.GetVolume(instanceCollection, (IntPtr) 0, (IntPtr) 0) == 0.0); IntPtr propertyNamePtrI = IntPtr.Zero; Engine.x86_64.GetNameOfPropertyW(propertyAbcd, out propertyNamePtrI); string propertyNameI = System.Runtime.InteropServices.Marshal.PtrToStringUni(propertyNamePtrI); IntPtr propertyNamePtrII = IntPtr.Zero; Engine.x86_64.GetNameOfPropertyW(propertyEfgh, out propertyNamePtrII); string propertyNameII = System.Runtime.InteropServices.Marshal.PtrToStringUni(propertyNamePtrII); Engine.x86_64.SetNameOfPropertyW(propertyAbcd, System.Text.Encoding.Unicode.GetBytes("InverseRelationControledByThirdParty")); Engine.x86_64.SetObjectProperty(instanceCube, propertyAbcd, ref instanceCollection, 1); Engine.x86_64.SetObjectProperty(instanceCollection, propertyObjects, ref instanceCube, 1); System.Diagnostics.Debug.Assert(Engine.x86_64.GetVolume(instanceCollection, (IntPtr) 0, (IntPtr) 0) == 8.0); IntPtr propertyNamePtrIII = IntPtr.Zero; Engine.x86_64.GetNameOfPropertyW(propertyAbcd, out propertyNamePtrIII); string propertyNameIII = System.Runtime.InteropServices.Marshal.PtrToStringUni(propertyNamePtrIII); // // The retrieved property names have the following values // propertyNameI : 'abcd' // propertyNameII : 'efgh' // propertyNameIII : 'InverseRelationControledByThirdParty' // // // The resulting model can be viewed in 3D-Editor.exe // Engine.x86_64.SaveModelW(model, System.Text.Encoding.Unicode.GetBytes("c:\\created\\myFile.bin")); Engine.x86_64.CloseModel(model); } }