Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 15: Fundamental Controls

// TODO: Add your control notification handler code here

double SquareSide, SquarePerimeter, SquareArea;

char StrSquareSide[10], StrSquarePerimeter[10], StrSquareArea[10];

m_SquareSide.GetWindowText(StrSquareSide, 10);

SquareSide = atof(StrSquareSide);

SquarePerimeter = SquareSide * 4;

SquareArea = SquareSide * SquareSide;

sprintf(StrSquarePerimeter, "%.3f", SquarePerimeter);

sprintf(StrSquareArea, "%.3f", SquareArea);

m_SquarePerimeter.SetWindowText(StrSquarePerimeter);

m_SquareArea.SetWindowText(StrSquareArea);

}

void CQuadrilateral::OnBnClickedBtnRcalc()

{

// TODO: Add your control notification handler code here

double RectLength, RectHeight, RectPerimeter, RectArea;

char StrRectLength[10], StrRectHeight[10],

StrRectPerimeter[10], StrRectArea[10];

m_RectLength.GetWindowText(StrRectLength, 10);

RectLength = atof(StrRectLength);

m_RectHeight.GetWindowText(StrRectHeight, 10);

RectHeight = atof(StrRectHeight);

RectPerimeter = 2 * (RectLength + RectHeight);

RectArea = RectLength * RectHeight;

sprintf(StrRectPerimeter, "%.3f", RectPerimeter);

sprintf(StrRectArea, "%.3f", RectArea);

m_RectPerimeter.SetWindowText(StrRectPerimeter);

m_RectArea.SetWindowText(StrRectArea);

}

2. Completer the controls events of the Geome3D.cpp source as follows:

// Geome3D.cpp : implementation file

//

...

// CGeome3D message handlers

void CGeome3D::OnBnClickedBtnUcalc()

{

// TODO: Add your control notification handler code here

// Related Calculations of the cube

double CubeSide, CubeArea, CubeVolume;

CEdit *edtCubeSide, *edtCubeArea, *edtCubeVolume;

char StrCubeSide[10], StrCubeArea[10], StrCubeVolume[10];

edtCubeSide = reinterpret_cast<CEdit *>(GetDlgItem(IDC_EDT_USIDE));

edtCubeArea = reinterpret_cast<CEdit *>(GetDlgItem(IDC_EDT_UAREA));

edtCubeVolume = reinterpret_cast<CEdit *>(GetDlgItem(IDC_EDT_UVOL));

edtCubeSide->GetWindowText(StrCubeSide, 10);