To allow someone to drop something into a control is simple

dragenter put:
if (e->Data->GetDataPresent(DataFormats::Text))

e->Effect = DragDropEffects::Copy;

else

e->Effect = DragDropEffects::None;

and then DragLeave:

whatever the name->Text = e->Data->GetData(DataFormats::Text)->ToString();

But how do you let someone drag something out of your control and put it in
say Word? I've never been able to figure that out.