Adding Tooltip to any control in your Dialog (multiline)

1. Add MFECToolTip.h and MFECToolTip.cpp in your project
2. In OnInitDialog, call the Create function and add the tooltip information to any control you would like to have.

   For example:
   In SampleDlg.h add a variable

              MFECToolTip m_toolTip;
   

   
   In SampleDlg.cpp

          SampleDlg::OnInitDialog()
           {
               m_toolTip.Create( this );    // after creating, add the information
               m_toolTip.AddControlInfo( contol_ID, information, background_color, text_color );
               // control ID is of type UINT
               // information is of type CStringArray.
               // background_color and text_color are optional
           }
   

3. Override the dialog's PreTranslateMessage to handle mouse movement.

   BOOL CToolTipExDlg::PreTranslateMessage( MSG *pMsg )
   {
           if( pMsg->message == WM_MOUSEMOVE )
           {
                   POINT pt = pMsg->pt;    
                   ScreenToClient( &pt );
   
                   // this is the only function to call
                   m_toolTip.ShowToolTip( (CPoint)pt );
           }
   
           return CDialog::PreTranslateMessage(pMsg);
   }
   

4. explicitly show the tooltip in a particular control, call ShowToolTip( controlID ) with control ID as parameter. Make sure you call AddControlInfo() to add information for this control, otherwise no tooltip is displayed.
5. Delete or remove the existing tooltip information, call RemoveControlInfo( controlID ) and pass the control ID. If not found nothing happens.
6. So, you can add and remove tooltip at runtime. Try!

Download demo project - 58 KB

Download source - 3.4 KB