how to get information of a mail Item which is being dragged on Outlook 2007

My requirement is to get details about the items which are being dragged from outlook 2007.

I have used a windows API to register drag drop event on Outlook 2007 as following ... (public static extern int RegisterDragDrop(IntPtr hwnd, IOleDropTarget target);), and used IOleDropTarget interface to retrieve information when the drag drop events occur.

Following is what I have done so far

IOleDropTarget Interface

[ComImport, Guid("00000122-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IOleDropTarget
{
    [PreserveSig]
    int OleDragEnter([In, MarshalAs(UnmanagedType.Interface)] object pDataObj, [In, MarshalAs(UnmanagedType.U4)] int grfKeyState, [In, MarshalAs(UnmanagedType.U8)] long pt, [In, Out] ref int pdwEffect);
    [PreserveSig]
    int OleDragOver([In, MarshalAs(UnmanagedType.U4)] int grfKeyState, [In, MarshalAs(UnmanagedType.U8)] long pt, [In, Out] ref int pdwEffect);
    [PreserveSig]
    int OleDragLeave();
    [PreserveSig]
    int OleDrop([In, MarshalAs(UnmanagedType.Interface)] object pDataObj, [In, MarshalAs(UnmanagedType.U4)] int grfKeyState, [In, MarshalAs(UnmanagedType.U8)] long pt, [In, Out] ref int pdwEffect);
}

At event of an item being dragged from outlook, following method fires with all the parameters passed in to the method .

int IOleDropTarget.OleDragEnter(object pDataObj, int grfKeyState, long pt, ref int pdwEffect)
    {           
      retirn 0;
    }

Is it possible to get the information about the item which is being dragged using the pDataObj ?

So far i have tried following to get information out of this object which gave me no information about the item being dragged.

Type myType = pDataObj.GetType();

Is there other things to do to get the information I want ?

Code examples will be appreciated

Thank you

Solution

You need to get the running Outlook instance and then get the Selection object from the active explorer window. It will contain the dragged data.

 // Check whether there is an Outlook process running.
 if (Process.GetProcessesByName("OUTLOOK").Count() > 0)
 {
    // If so, use the GetActiveObject method to obtain the process and cast it to an Application object.
   application = Marshal.GetActiveObject("Outlook.Application") as Outlook.Application;
  }

See How to: Get and Log On to an Instance of Outlook for more information.