Meta information API Calls
File IO / Stream / Copy API Calls
Design Tree Classes API Calls
Design Tree Properties API Calls
Design Tree Instances API Calls
Retrieve Geometry API Calls
Derived Geometry API Calls
Deprecated API Calls
Classes
Object Properties (relations)
Datatype Properties

OpenModelW

This function opens the model on location file name.
References inside to other ontologies will be included.
A handle to the model will be returned, or 0 in case something went wrong.

Syntax

C++ 32 bit
C++ 64 bit
C# 32 bit
C# 64 bit
public const string enginedll = @"engine.dll";

[DllImport(enginedll, EntryPoint = "OpenModelW")]
public static extern Int64 OpenModelW(string fileName);

[DllImport(enginedll, EntryPoint = "OpenModelW")]
public static extern Int64 OpenModelW(byte[] fileName);

Property fileName

Size: 32 bit / 4 byte (reference)
The file name of the file as available in the file system in Unicode (wchar_t *). The given wchar_t array will not be adjusted. The size of each wchar_t element is depending on the OS, both 16 bit / 2 bytes wchar_t elements as well as 32 bit / 4 byte wchar_t elements are recognized and supported.

Example (based on pure API calls)

Here you can find code snippits that show how the API call OpenModelW can be used.

C++ 32 bit
C++ 64 bit
C# 32 bit
C# 64 bit
using RDF;      //  include at least engine.cs within your solution

...

Int64 GetFileInstanceCount(string fileName)
{
    Int64   instanceCount = 0,
            model = RDF.engine.OpenModelW(System.Text.Encoding.Unicode.GetBytes(fileName));
    
    if (model)
    {
        Int64   myInstance = RDF.engine.GetInstancesByIterator(model, 0);

        while (myInstance != 0)
        {
            instanceCount++;
            myInstance = RDF.engine.GetInstancesByIterator(model, myInstance);
        }

        RDF.engine.CloseModel(model);
    }

    return  instanceCount;
}

int main()
{
    Int64   noInstances = GetFileInstanceCount("c:\\created\\myFile.bin");
}