[Boa Constr] Simple GUI for math

[Werner F. B. <wer...@fr...>]

Hi,

As mentioned on sourceforge I post the code here.

An enhancement to this could would be to use e.g. a combobox to define 
if you want to do an addition, division, multiplication etc.

Have fun.
Werner

P.S.
Doing this I noted a small problem in Boa with numctrl, the event is 
generated by Boa as "wx.lib.masked.numctrl.EVT_MASKEDNUM" instead of 
"wx.lib.masked.numctrl.EVT_NUM", this will be corrected in CVS.