MFC Quick Start Guide (Part 6): ToolTip

1. Add a member variable in MFC101Dlg.h
   
   

   CToolTipCtrl  m_ToolTip;
   

   
   
   
   (Fig. 6.1: Member variable)
2. Add a member function:
   
   

   virtual  BOOL  PreTranslateMessage(MSG* pMsg);
   

   
   
   
   (Fig. 6.2: Member function declaration)
3. Inside MFC101Dlg.cpp, add the function code:
   
   

   BOOL  CMFC101Dlg::PreTranslateMessage(MSG* pMsg)
   {
        m_ToolTip.RelayEvent(pMsg);
   
        return CDialog::PreTranslateLessaage(pMsg);
   }
   

   
   
   
   (Fig. 6.3: Code)
4. Go back to OnInitDialog(), and initialize the tooltip:
   
   

   if (!m_ToolTip.Create(this))
   {
        TRACE("Unable to create the ToolTip!");
   }
   else
   {
        m_ToolTip.AddTool((CButton *) GetDlgItem (IDC_BUTTON1);
             _T("Adjust the three bars to control th text background color."));
   
        m_ToolTip.Activate(TRUE);
   }
   

   
   
   
   
   (Fig. 6.4: Initialization)

Build & Run

1. Press Ctrl+shift+B to build the solution
2. Press Ctrl+F5 to run (without debugging).
3. Move your mouse cursor over the button and see what happen.
   
   

   

   (Fig. 6.5: Sample Output)