Why on Earth does AlphaMania have popup menu functionality?
AlphaMania's SetFX interface was created as a Director movie, but the design called for a professional quality platform-native popup menu, which Director does not support. In order to achieve this design goal Media Lab added lingo-callable basic popup menu functionality to AlphaMania for Mac OS Classic, Mac OS X, and Windows. The popup menu does not support submenus or styles, but for basic one-level menu needs it is perfect, and very easy to use. We have decided to document this feature as an added bonus for our customers.

How do you use it?
Implementation is a single function, PopupMenu(). It is called with a lingo list of menu items and a location, and returns the item number (starting with one) the user chose, or zero if no item was selected. Generally you will call PopupMenu from within a mouseDown handler.

Because the menu is created through the AlphaMania Xtra, at least one AlphaMania member must be present in the cast, even if it never appears on stage, to be used for calling the function

Here is the basic call syntax:

old style:
chosenItem = PopUpMenu( amMember, loc, menuList)

new style:
chosenItem = (member amMember).PopUpMenu(loc, menuList)

chosenItem: the function returns an integer representing the number of the item chosen. Zero signifies the menu was closed without a selection made.
amMember: a member reference for any castmember imported by AlphaMania. Note, this is a reference as in "member 4" rather than a number.
loc: a point structure indicating the location of the menu.
menuList: a Lingo list of strings representing the menu item names.

Here is lingo for a small menu demonstration:

global myMenuList = ["Medium", "Large", "Extra Large", "Super Size", "Biggie Size"]
global anAM_MemberNum = 2 -- any AlphaMania member

on mousedown
  set choice = PopUpMenu(member anAM_MemberNum, the mouseloc, myMenuList)
  if choice = 0 then
    put "No selection made."
  else
    put "Selected item number:" && choice
    put "The list item selected was:" && getAt(myMenuList, choice)
  end if
end

Here is an example (requires Shockwave and AlphaMania auto-download):