C#

ahjiang wrote:

is it possible for a Java program to call a function, for e.g. helloWorld() in a c# program?

struct FILE
{
   ...
}

[DllImport("main.dll")]
public extern static void parseFile([MarshalAs(UnmanagedType.Struct)]FILE pfiOriginal );

FileStream fileStream = new FileStream("myfile.bin", FileMode.Open);
BinaryReader binaryReader = new BinaryReader(fileStream);

int a = binaryReader.ReadInt32();
float b = binaryReader.ReadSingle();
...

binaryReader.Close();
fileStream.Close();

[DllImport("testcpp2.dll"]
private static extern void parseFile(IntPtr pFile);

using(FileStream fStream = new FileStream("test.bin", FileMode.Open))
{
	parseFile(fStream.Handle);
}

void parseFileWithFilename(string filename)
{
   // ... use this filename for getting FILE*
}