sizer->Add (new wxStaticText (this, wxID_ANY, wxT (":")), 0, wxALIGN_CENTER_VERTICAL);
_minutes = new wxSpinCtrl (this, wxID_ANY, wxT(""), wxDefaultPosition, size);
sizer->Add (new wxStaticText (this, wxID_ANY, wxT (":")), 0, wxALIGN_CENTER_VERTICAL);
_minutes = new wxSpinCtrl (this, wxID_ANY, wxT(""), wxDefaultPosition, size);