exampl~2.cpp

本书所附光盘的内容包含了开发实例的所有程序源码

#include "stdafx.h"
#include "Example.h"
#include "ExampleDoc.h"
#include "ExampleView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

// CExampleView
IMPLEMENT_DYNCREATE(CExampleView, CView)
BEGIN_MESSAGE_MAP(CExampleView, CView)
	ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()

// CExampleView 构造/销毁
CExampleView::CExampleView()
{
	// TODO: 在此处添加构造代码
	m_tracker.m_rect.SetRect(0, 0, 30, 30);
	m_tracker.m_nStyle=CRectTracker::resizeInside | CRectTracker::dottedLine;
}

CExampleView::~CExampleView()
{
}

// CExampleView 绘制
void CExampleView::OnDraw(CDC* pDC)
{
	CExampleDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: 在此处为本机数据添加绘制代码
	CBrush brush (RGB (0, 0, 255));
	CBrush* pOldBrush=pDC->SelectObject(&brush);
	CRect rcEllipse;
	m_tracker.GetTrueRect(rcEllipse);
	pDC->Ellipse(rcEllipse);
	m_tracker.Draw(pDC);
	pDC->SelectObject(pOldBrush);
}

#ifdef _DEBUG
CExampleDoc* CExampleView::GetDocument() const // 非调试版本是内联的
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CExampleDoc)));
	return (CExampleDoc*)m_pDocument;
}
#endif //_DEBUG

// CExampleView 消息处理程序
void CExampleView::OnLButtonDown(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	CExampleDoc* pDoc=GetDocument();
	ASSERT_VALID(pDoc);
	BOOL bResult=m_tracker.HitTest(point)!= CRectTracker::hitNothing;
	if (bResult)
	{
		m_tracker.Track (this,point,true);
		pDoc->SetModifiedFlag();
		pDoc->UpdateAllViews(NULL);
	}
	else
		m_tracker.TrackRubberBand(this,point,true);
	CView::OnLButtonDown(nFlags, point);
}