barview.cpp

mfc例题与练习第二版 例题与练习第二版

// BarView.cpp : implementation file
//

#include "stdafx.h"
#include "Ex3_4.h"
#include "Ex3_4Doc.h"
#include "BarView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CBarView

IMPLEMENT_DYNCREATE(CBarView, CView)

CBarView::CBarView()
{
}

CBarView::~CBarView()
{
}


BEGIN_MESSAGE_MAP(CBarView, CView)
	//{{AFX_MSG_MAP(CBarView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBarView drawing

void CBarView::OnDraw(CDC* pDC)
{
	CEx3_4Doc* pDoc = (CEx3_4Doc*)GetDocument();
	// TODO: add draw code here
	int cxBar,cxBarSpacing, cxGraph,cyGraph, x,y, i;
    RECT  rc;

    CBrush brush(RGB(0, 0, 255));  // red brush
    CBrush* pOldBrush = pDC->SelectObject(&brush);
    CPen pen(PS_SOLID, 0, RGB( 0, 0,255)); // red pen
    CPen* pOldPen = pDC->SelectObject(&pen);

    cxGraph = 100;
    cyGraph = DATAMAX;  // defined in resource.h

    this->GetClientRect(&rc);
    pDC->SetMapMode(MM_ANISOTROPIC);
    pDC->SetWindowOrg(0, 0);
    pDC->SetViewportOrg(30, rc.bottom-10);
    pDC->SetWindowExt(cxGraph, cyGraph);
    pDC->SetViewportExt(rc.right-20, -(rc.bottom-20));

    // ┮