message: Win: make Ctrl+A select all items in list when focused
  This works automatically on other platforms, but requires explicit code
  on Windows.
  See also
diff: @@ -512,6 +512,12 @@ PoeditListCtrl::PoeditListCtrl(wxWindow *parent, wxWindowID id, bool dispIDs)
  #ifdef __WXMSW__
  if (visualMode == ColorScheme::Dark)
  SetAlternateRowColour(GetBackgroundColour().ChangeLightness(108));
  +
  + GetMainWindow()->Bind(wxEVT_MENU, [=](wxCommandEvent&) {
  + SelectAll();
  + wxDataViewEvent le(wxEVT_DATAVIEW_SELECTION_CHANGED, this, GetSelection());
  + ProcessWindowEvent(le);
  + }, wxID_SELECTALL);
  #endif
  Bind(wxEVT_SIZE, &PoeditListCtrl::OnSize, this);
  