void table_layout()
{
   TGMainFrame *main = new TGMainFrame(gClient->GetRoot(), 220, 220);
   TGVerticalFrame *pVF = new TGVerticalFrame(main, 200, 200);
   pVF->SetLayoutManager(new TGTableLayout(pVF, 5, 2, kFALSE, 5));

   // TubeID Labels and Field.
   m_pLBL_TubeID = new TGLabel(pVF, "Tube ID");
   m_pDlgTubeID = new TGTextEntry(pVF, "");
   m_pDlgTubeID->SetToolTipText("Tube ID for the Animal Code and specimen.");
   pVF->AddFrame(m_pLBL_TubeID, new TGTableLayoutHints(0, 1, 0, 1, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   pVF->AddFrame(m_pDlgTubeID, new TGTableLayoutHints(1, 2, 0, 1, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));

   // Animal Code Field.
   m_pLBL_AnimalCode = new TGLabel(pVF, "Animal Code");
   m_pDialogData = new TGTextEntry(pVF, "");
   m_pDialogData->SetToolTipText("Animal Code specimen to be sorted.");
   pVF->AddFrame(m_pLBL_AnimalCode, new TGTableLayoutHints(0, 1, 1, 2, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   pVF->AddFrame(m_pDialogData, new TGTableLayoutHints(1, 2, 1, 2, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
/*
   m_pDialogData->SetFont(ft_l);
   m_pDialogData->SetText("");
   m_pDialogData->SetEditable(kFALSE);
   m_pDialogData->SetEnabled(kTRUE);
   m_pDialogData->SetWindowName("Bull Data");
   main->EnableBullDialog(kFALSE); // hide by default
*/
   // SortType Field (ListBox)
   m_pLBL_SortType = new TGLabel(pVF, "Sort Type");
   m_pDlgTubeIDSortType = new TGComboBox(pVF,90);
   m_pDlgTubeIDSortType->Resize(100, 20);
   m_pDlgTubeIDSortType->AddEntry("N/A", 0);
   m_pDlgTubeIDSortType->AddEntry("HE", 1);
   m_pDlgTubeIDSortType->AddEntry("HP", 2);
   m_pDlgTubeIDSortType->AddEntry("VHP", 3);
   m_pDlgTubeIDSortType->AddEntry("RES", 4);
   m_pDlgTubeIDSortType->Select(0); // Select N/A
   pVF->AddFrame(m_pLBL_SortType, new TGTableLayoutHints(0, 1, 2, 3, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   pVF->AddFrame(m_pDlgTubeIDSortType, new TGTableLayoutHints(1, 2, 2, 3, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));

   // Purity field.
   m_pLBL_Purity =  new TGLabel(pVF, "Purity");
   m_pDlgTubeIDPurity = new TGTextEntry(pVF, "");
   m_pDlgTubeIDPurity->SetToolTipText("Purity of the Animal Code/specimen.");
   pVF->AddFrame(m_pLBL_Purity, new TGTableLayoutHints(0, 1, 3, 4, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   pVF->AddFrame(m_pDlgTubeIDPurity, new TGTableLayoutHints(1, 2, 3, 4, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));

   // MachineID Mismatch field (0 fail,1 success)
   m_pLBL_MachineID =  new TGLabel(pVF, "Machine ID\nMatch");
   m_pDlgTubeIDMachineIDMatch = new TGTextEntry(pVF, "");
   m_pDlgTubeIDMachineIDMatch->SetToolTipText("Machine ID specifies if the Animal Code specimen is allowed to be sorted on this machine.");
   pVF->AddFrame(m_pLBL_MachineID, new TGTableLayoutHints(0, 1, 4, 5, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   pVF->AddFrame(m_pDlgTubeIDMachineIDMatch, new TGTableLayoutHints(1, 2, 4, 5, kLHintsLeft | kLHintsCenterY, 3, 3, 3, 3));
   main->AddFrame(pVF, new TGLayoutHints(kLHintsCenterX|kLHintsCenterY, 0, 0, 10, 10));
   main->MapSubwindows();
   main->Layout();
   main->Resize(main->GetDefaultSize());
   main->MapWindow();
}