It's a little hacky but in 2.8 you can use a wx.Frame with a
wx.POPUP_WINDOW style (only on Mac) and you will get something that
behaves a little like PopupWindow.
2.9 will have a true implementation of wx.PopupWindow and
wx.TransientPopupWindow.
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception