Method OnDataChange

src/excelexch.cpp:306–344

	}

	void OnDataChange(wxCommandEvent &evt)
	{
		if (!m_case || !m_caseWin)
			return;
		
		int idx = lstVariables->GetSelection();
	
		switch(evt.GetId())
		{
		case ID_txtExcelFile:
			m_exch.ExcelFile = txtExcelFile->GetValue();
			break;
		case ID_txtExcelRange:
			{
				if (idx < 0 || idx >= (int)m_exch.Vars.size())
					return;
				m_exch.Vars[idx].Range = txtExcelRange->GetValue();
			}
		break;
		case ID_rbgToFrom:
			{
				if (idx < 0 || idx >= (int)m_exch.Vars.size())
					return;
				unsigned long vf = m_ci->Variables[0].Flags(m_exch.Vars[idx].Name);
				if ( vf & VF_CALCULATED || vf & VF_LIBRARY )
				{
					wxMessageBox("'" + m_ci->Variables[0].Label(m_exch.Vars[idx].Name) + "' is a calculated value or a library selection, and as a result its value cannot be captured from Excel.");
					rbgToFrom->SetSelection(0);
				}
				else
					m_exch.Vars[idx].Type = (rbgToFrom->GetSelection()==0) 
						? ExcelExchange::SEND_TO : ExcelExchange::CAPTURE_FROM;
			}
			break;
		case ID_chkEnableExch:
			m_exch.Enabled = chkEnableExch->GetValue();
			break;
		}
	}

	void DoSelectVar()
	{