I wanna drag and drop some files into QTreeView

[guri]

Hello

I'm making messenger program such as MSN or Google Talk.
I have some problems on FileTransfer.
To send a file to someone, I need to drag and drop it on member(tree item) of qtreeview.
(There is a member list on QTreeView subclass.)

I set "setAcceptDrop" and... changed various properties.
But it is impossible to drag and drop a file.

HELP ME !!

thank you in advance.