Drag And Drop

Hi everybody,

I wrote a program for the purpose of composing E-mails. The screen has two containers. The upper container has fields with search helps for things like signature, header, ETC.

The lower screen is a blank container for writing the contents of the E-mail (I'll call it the text container). Is it possible to drag and drop (using the mouse) the text from one of the fields into the text container?

it seems that the text container allow to drag from it and into it in the classic way, by marking the text, pressing control + left mouse button and then dragging.
On the other hand, my feilds does not show that kind of interactivity. Does anyone have an idea how to make it possible so the user can drag, say, the signature he chose using the search help into the exact place he wants it in the text container?

you can think of it as an alternative to copy-paste.

Any information will help.

Thanks in advance,

Yoni.