Different behavior of EVT_COMBOBOX on Gtk an windows

[Robert Roebling]

> Using 2.7.0 I found that entering a char in a combobox launches
> an EVT_COMBOBOX on Gtk, but not on windows. That's ugly, 
> because my app relies on the ability to differenciate between a 
> char down event and a selection. My questions: Is it a bug or Gtk 
> related?

I'll look into correcting this, but I actually thought that the
control was supposed to emit EVT_COMBOBOX when
text is entered. Otherwise you'd always have to intercept
both events to make use of the control at all, but I'll also
look at the docs and the wxMSW implementation again.

  Robert