taken from http://msdn.microsoft.com/library/psdk/shellcc/shell/Functions/DragAcceptFiles.htm
Registers whether a window accepts dropped files.
VOID DragAcceptFiles(
HWND hWnd,
BOOL fAccept
);
No return value.
An application that calls DragAcceptFiles with the fAccept parameter set to TRUE has identified itself as able to process the WM_DROPFILES message from File Manager.
Windows NT/2000: Requires Windows NT 3.1 or later.
Windows 95/98: Requires Windows 95 or later.
Header: Declared in shellapi.h.
Import Library: shell32.lib.