to send message WM_DROPFILES 2 notepad?

Hi,

I want to send a message WM_DROPFILES using sendmessage to the notepad applicaton ….

i am getting error during the sending to notepad.

Call SendMessage(handle, WM_DROPFILES, hDrop, 0)

handle = Notepad window handle
message = WM_DROPFILES
wParam (hDrop) = internal file structure
lParam = 0

how to set value to wParam regarding hDrop(internal file structure) ?

U will be appreciated if u could figure out the above issue.

thanks
Adesh