Hi,
I have a c++ dll having one structure as follows
//*************************//
typedef unsigned int NodeID;
struct inputNode
{
NodeID id;
BOOLEAN isExit;
};
//************************//
And here is a method as below
//***********************//
void convertToInternalDataStructure (struct inputEdge*, struct inputNode*);
//**********************//
I wrote the wrapper class in C# having structure as below
//Structure
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct inputNode
{
public uint id;
public bool isExit;
}
//ApiCall
[DllImport(DLL_FILENAME, PreserveSig = false)]
public static extern void convertToInternalDataStructure(
IntPtr inputNodeList, IntPtr inputEdgeList);
//Method
public void ConvertToInternalDataStructure(IList<inputNode> inputNodeList,
IList<inputEdge> inputEdgeList)
{
IntPtr ptrNodeList =new IntPtr() ;
IntPtr ptrEdgeList = new IntPtr();
int MyDataSize = Marshal.SizeOf(inputNodeList[0]) * inputNodeList.Count;
ptrNodeList = Marshal.AllocHGlobal(MyDataSize);
MyDataSize = Marshal.SizeOf(inputEdgeList[0]) * inputEdgeList.Count;
ptrEdgeList = Marshal.AllocHGlobal(MyDataSize);

System.Runtime.InteropServices.Marshal.StructureToPtr(inputNodeList, ptrNodeList, true);
System.Runtime.InteropServices.Marshal.StructureToPtr(inputEdgeList, ptrEdgeList, true);
convertToInternalDataStructure(ptrNodeList, ptrEdgeList);
}
the above method getting inputs as a List<structures> But conversion get failed.
How can i fix it? Is it the sufficient way to call this Api.