Visual C++ and MFC Programming 2nd Edition

Chapter 17: Track-Based Controls Visual C++ and MFC Fundamentals

m_Edit.SetWindowText("26");

return TRUE; // return TRUE unless you set the focus to a control

}

void CSpinEventDlg::OnDeltaposSpin(NMHDR *pNMHDR, LRESULT *pResult)

{

LPNMUPDOWN pNMUpDown = reinterpret_cast<LPNMUPDOWN>(pNMHDR);

// TODO: Add your control notification handler code here

// Declare a pointer to a CSpinButtonCtrl;

CSpinButtonCtrl *Spinner;

// Get a pointer to our spin button

Spinner = reinterpret_cast<CSpinButtonCtrl *>(GetDlgItem(IDC_SPIN));

// Found out if it is our spin button that sent the message

// This conditional statement appears useless but so what?

if( pNMHDR->hwndFrom == Spinner->m_hWnd )

{

// Get the current value of the spin button

int CurPos = pNMUpDown->iPos;

// Convert the value to a string

char StrPos[20];

sprintf(StrPos, "%d", CurPos);

// Display the value into the accompanying edit box

m_Edit.SetWindowText(StrPos);

}

*pResult = 0;

}

15. Test the application


16. Close it and return to MSVC

17.2 The UpDown Control.................................................................................

17.2.1..Overview...............................................................................................

Besides the spin button, Visual C++ ships with an ActiveX control that provides the same

functionality. To use this object, you can add it from the Insert ActiveX Control dialog