[GRASS-git] [OSGeo/grass] 724eab: add ComboBox event handler (#363)

[Anna Petrasova]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: 724eab03dc23e829090020740c63cc2babd7dded
      https://github.com/OSGeo/grass/commit/724eab03dc23e829090020740c63cc2babd7dded
  Author: Anna Petrasova <kratochanna at gmail.com>
  Date:   2020-03-05 (Thu, 05 Mar 2020)

  Changed paths:
    M gui/wxpython/gui_core/forms.py

  Log Message:
  -----------
  add ComboBox event handler (#363)

fixes #3502, this needed because of inconsistencies between
platforms with wxpython/wxwidgets event handling for ComboBox