How to pass intptr datatype parameter of C# function in Clarion?

questions
1

For ex:

public string ClickSpaceKey(IntPtr Handle)
        {
            Handle = (intPtr)Handle;
            MessageBox.Show("came here for spellcheck");
            //Process[] p = Process.GetProcessesByName("TMW");
            try
            {
                SpellingCheckerEngine.CheckCtrlBackgroundNotify(Handle, RTB1Options, RTB1MarkColor);
            }
            catch(Exception ex)
            {
                MessageBox.Show("Erro :"+ ex.Message.ToString());
            }
            return "Success";
        }

How to pass intptr datatype parameter of C# function in Clarion?