public object MarshalNativeToManaged(IntPtr nativeData)
{
List <string> values = new List <string>();
if (nativeData != IntPtr.Zero)
{
IntPtr arrayIndex = nativeData;
while (true)
{
IntPtr stringPointer = Marshal.ReadIntPtr(arrayIndex);
if (stringPointer == IntPtr.Zero)
{
break;
}
string value = Utf8Marshal.PtrToStringUtf8(stringPointer);
if (value == string.Empty)
{
break;
}
values.Add(value);
arrayIndex += IntPtr.Size;
}
}
return(new ReadOnlyCollection <string>(values));
}
public object MarshalNativeToManaged(IntPtr nativeData)
{
// Get the the size of the string
string value = Utf8Marshal.PtrToStringUtf8(nativeData);
return(value);
}
public IntPtr MarshalManagedToNative(object managedObj)
{
var values = managedObj as ReadOnlyCollection <string>;
if (values == null)
{
return(IntPtr.Zero);
}
IntPtr[] unmanagedArray = new IntPtr[values.Count + 1];
for (int i = 0; i < values.Count; i++)
{
unmanagedArray[i] = Utf8Marshal.StringToHGlobalUtf8(values[i]);
}
unmanagedArray[values.Count] = IntPtr.Zero;
IntPtr unmanagedData = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)) * unmanagedArray.Length);
Marshal.Copy(unmanagedArray, 0, unmanagedData, unmanagedArray.Length);
return(unmanagedData);
}
