Int 16 Fn FFDE  U - Pc Tools V5.1-8.0 Desktop - Display Popup Menu         [U]

   AX = FFDEh
   DS:DX -> menu description (must be on a paragraph boundary)

Return: AX = ???
       AL seems to be the number of the selected button

Note:  available only when popped up

See Also: AX=FFEEh