Body Monitor

To add a progress bar to your application, from the Insert ActiveX Control dialog box, select the desired one. For this lesson, because everything available in Version 5.0 is also available in Version 6.0, we will use the later.

After adding a progress bar to a parent window, it assumes a horizontal display. This is controlled by the Orientation property (not available in Version 5.0) whose default value is 0 – ccOrientationHorizontal. If you want the progress bar to be vertical, change this property to a 1 – ccOrientationVertical value.

The range of values that a progress bar can assume is set using the Min property for the minimum value and the Max field for the highest value.

1. Right-click anywhere on the dialog box and click Insert ActiveX Control
2. In the ActiveX Control list of the Insert ActiveX Control dialog box, click Microsoft ProgressBar Control, version 6.0
    
3. Click OK
4. Right-click the newly added control and click Properties. In the Properties window, click the Control tab and change the Orientation property to 1 – ccOrientationVertical
5. On the dialog box, right-click the ProgressBar and click Copy. Right-click anywhere on the dialog box and click Paste many times until you get 10 ProgressBar controls
6. Design the dialog box as follows (only the top labels and the ProgressBar controls need IDs):
    

   Control ID Caption Additional Properties Static Text IDC_VAL_BLOOD 000 Align Text: Center Static Text IDC_VAL_HEART 000 Align Text: Center Static Text IDC_VAL_KIDNEY 000 Align Text: Center Static Text IDC_VAL_BRAIN 000 Align Text: Center Static Text IDC_VAL_LLUNG 000  Align Text: Center Static Text IDC_VAL_RLUNG 000 Align Text: Center Static Text IDC_VAL_PANCREAS 000 Align Text: Center Static Text IDC_VAL_LIVER 000 Align Text: Center Static Text IDC_VAL_BLADDER 000 Align Text: Center Static Text IDC_VAL_STOMACH  000 Align Text: Center ProgressBar   IDC_PRGR_BLOOD 000 Align Text: Center ProgressBar   IDC_PRGR_HEART     ProgressBar   IDC_PRGR_KIDNEY     ProgressBar   IDC_PRGR_BRAIN     ProgressBar   IDC_PRGR_LLUNG     ProgressBar   IDC_PRGR_RLUNG     ProgressBar   IDC_PRGR_PANCREAS     ProgressBar   IDC_PRGR_LIVER     ProgressBar   IDC_PRGR_BLADDER     ProgressBar   IDC_PRGR_STOMACH

7. Press Ctrl + W to access the ClassWizard. Add a CString Value Variable for each label that has an ID and Add a CProgressBar Control Variable for each ProgressBar control as follows:
    

   Identifier	Value Variable	Control Variable
   IDC_VAL_BLOOD	m_ValBlood
   IDC_VAL_HEART	m_ValHeart
   IDC_VAL_KIDNEY	m_ValKidney
   	m_ValBrain
   	m_ValLLung
   	m_ValRLung
   	m_ValPancreas
   	m_ValLiver
   	m_ValBladder
   	m_ValStomach
   IDC_PRGR_BLOOD		m_Blood
   IDC_PRGR_HEART		m_Heart
   IDC_PRGR_KIDNEY		m_Kidney
   IDC_PRGR_BRAIN		m_Brain
   IDC_PRGR_LLUNG		m_LLung
   IDC_PRGR_RLUNG		m_RLung
   IDC_PRGR_PANCREAS		m_Pancreas
   IDC_PRGR_LIVER		m_Liver
   IDC_PRGR_BLADDER		m_Bladder
   IDC_PRGR_STOMACH		m_Stomach

8. Click OK
9. Using the Resource Symbols dialog box, add ten new identifiers as IDT_BLOOD, IDT_HEART, IDT_KIDNEY, IDT_BRAIN, IDT_LLUNG, IDT_RLUNG, IDT_PANCREAS, IDT_LIVER, IDT_BLADDER, and IDT_STOMACH
    
10. Click Close
11. In the OnInitDialog() event of the dialog class, create the following timers and generate a random seed:
     

    BOOL CBodyMonitorDlg::OnInitDialog() { CDialog::OnInitDialog(); // Set the icon for this dialog. The framework does this automatically // when the application's main window is not a dialog SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon // TODO: Add extra initialization here SetTimer(IDT_BLOOD, 650, NULL); SetTimer(IDT_HEART, 200, NULL); SetTimer(IDT_KIDNEY, 450, NULL); SetTimer(IDT_BRAIN, 1000, NULL); SetTimer(IDT_LLUNG, 750, NULL); SetTimer(IDT_RLUNG, 850, NULL); SetTimer(IDT_PANCREAS, 800, NULL); SetTimer(IDT_LIVER, 1200, NULL); SetTimer(IDT_BLADDER, 550, NULL); SetTimer(IDT_STOMACH, 1500, NULL); srand(static_cast<unsigned>(time(NULL))); return TRUE; // return TRUE unless you set the focus to a control }

12. Save All

Progress Bars Methods and Events

The values of a progress bar are float, unlike the progress control that mostly uses integers. To set the minimum value for the progress bar, call its SetMin() method. To set the maximum value, call the SetMax() method. These two methods expects a float number as argument. If these values have already been set, you can retrieve them by calling the GetMin() or the GetMax() methods respectively.

To set the initial value of the progress bar or to change its value any timer, you can call the SetValue() method. Also, at anytime, you can retrieve the position of the control by calling the GetValue() method.

Because the user cannot change the value of a progress bar, it does not fire value-related events. On the other hand, it provides you with the ability to do something when the user clicks or positions the mouse over the control. If you user simply positions the mouse or moves it on top of the progress bar, it fires the MouseMove() event. At the same time, if the user presses a mouse button on the progress bar, it fires the MouseDown() event. When the user releases the mouse, the MouseUp() event is sent. Clicking the progress bar causes it to fire the Click() event.

Practical Learning: Using a ProgressBar Control

1. Generate a WM_TIMER message for the dialog box and implement it as follows:
    

   void CBodyMonitorDlg::OnTimer(UINT nIDEvent) { // TODO: Add your message handler code here and/or call default float Blood = static_cast<float>(rand() % 100); float Heart = static_cast<float>(rand() % 100); float Kidney = static_cast<float>(rand() % 100); float Brain = static_cast<float>(rand() % 100); float LeftLung = static_cast<float>(rand() % 100); float RightLung = static_cast<float>(rand() % 100); float Pancreas = static_cast<float>(rand() % 100); float Liver = static_cast<float>(rand() % 100); float Bladder = static_cast<float>(rand() % 100); float Stomach = static_cast<float>(rand() % 100); if( nIDEvent == IDT_BLOOD ) { m_Blood.put_Value(Blood); // Make a sound if the value of the heart is too high if( Blood >= 85 ) MessageBeep(MB_ICONEXCLAMATION); } if( nIDEvent == IDT_HEART ) m_Heart.SetValue(Heart); if( nIDEvent == IDT_KIDNEY ) m_Kidney.SetValue(Kidney); if( nIDEvent == IDT_BRAIN ) m_Brain.SetValue(Brain); if( nIDEvent == IDT_LLUNG ) m_LLung.SetValue(LeftLung); if( nIDEvent == IDT_RLUNG ) m_RLung.SetValue(RightLung); if( nIDEvent == IDT_PANCREAS ) m_Pancreas.SetValue(Pancreas); if( nIDEvent == IDT_LIVER ) m_Liver.SetValue(Liver); if( nIDEvent == IDT_BLADDER ) m_Bladder.SetValue(Bladder); if( nIDEvent == IDT_STOMACH ) m_Stomach.SetValue(Stomach); m_ValBlood.Format("%.f.%d", m_Blood.GetValue(), rand()%99); m_ValHeart.Format("%.f\260", m_Heart.GetValue()); m_ValKidney.Format("%.f\045", m_Kidney.GetValue()); m_ValBrain.Format("<%.f", m_Brain.GetValue()); m_ValLLung.Format("%.f'%d\"", m_LLung.GetValue(), 2+rand()%9); m_ValRLung.Format("%.f\261", m_RLung.GetValue()); m_ValPancreas.Format("\273%.f", m_Pancreas.GetValue()); m_ValLiver.Format("%.f\260", m_Liver.GetValue()); m_ValBladder.Format("\247%.f\252", m_Bladder.GetValue()); CString SCode; switch(rand()%3) { case 0: SCode.Format("%s", "\274"); break; case 1: SCode.Format("%s", "\275"); break; case 2: SCode.Format("%s", "\276"); break; } m_ValStomach.Format("%.f%s", m_Stomach.GetValue(), SCode); UpdateData(FALSE); CDialog::OnTimer(nIDEvent); }

2. Test the application
3. Close it and return to MSVC