Tutorial 4

Application Defined Events

1. Add a Text Label to echo the Timer
2. Add an output Control Variable to the Text Label, with
   1. Access to private
   2. Category to Value
   3. Variable Name to "m_TimerEcho"
   4. Variable Type to CString
3. Create Service Routine as "WM_TIMER" and click "<Add> OnTimer"
4. In 'TutorialDlg.h', create a private variable int m_Seconds;
5. In 'TutorialDlg.cpp', initialize the timer inside the OnInitDialog() function:
   BOOL CTutorialDlg::OnInitDialog(){
      ...
      m_Seconds = 0;
      SetTimer(0, 1000, NULL);
   }
6. Now inside the function code block for OnTimer(...), add the following code:
   void CTutorialDlg::OnTimer(UINT nIDEvent){
      m_Seconds++;
      m_TimerEcho.Format("%d: Seconds have passed", m_Seconds);
      UpdateData(FALSE);
   }

1. Add a Text Label to echo the Mouse position
2. Add an output Control Variable to the Text Label, with
   1. Access to private
   2. Category to Value
   3. Variable Name to "m_MouseEcho"
   4. Variable Type to CString

1. Create Service Routine as "WM_LBUTTONDOWN" and click "<Add> OnLButtonDown"
2. Inside 'TutorialDlg.cpp' under the OnLButtonDown(...), add
   void CTutorialDlg::OnLButtonDown(UINT nFlags, CPoint point){
      ...
      m_MouseEcho.Format("Left mouse down at %d,%d", point.x, point.y);
      UpdateData(FALSE);
   }

1. Create Service Routine as "WM_RBUTTONDOWN" and click "<Add> OnRButtonDown"
2. Inside 'TutorialDlg.cpp' under the OnRButtonDown(...), add
   void CTutorialDlg::OnRButtonDown(UINT nFlags, CPoint point){
      ...
      m_MouseEcho.Format("Right mouse down at %d,%d", point.x, point.y);
      UpdateData(FALSE);
   }

1. Create Service Routine as "WM_MOUSEMOVE" and click "<Add> OnMouseMove"
2. Inside 'TutorialDlg.cpp' under the OnMouseMove(...), add
   void CTutorialDlg::OnMouseMove(UINT nFlags, CPoint point){
      ...
      m_MouseEcho.Format("Mouse Move at %d,%d", point.x, point.y);
      UpdateData(fFALSE);
   }

• In the Visual Studio project window, click
  1. Build >> Build Solution
  2. Debug >> Start to run
  
  Figure 4.1 - Application Window