bmpview.cpp

本压缩软件为《Visual C++6.0基础教程》（黑魔方系列）一书的源代码

// BmpView.cpp : implementation of the CBmpView class
//

#include "stdafx.h"
#include "Bmp.h"

#include "BmpDoc.h"
#include "BmpView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBmpView

IMPLEMENT_DYNCREATE(CBmpView, CView)

BEGIN_MESSAGE_MAP(CBmpView, CView)
	//{{AFX_MSG_MAP(CBmpView)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBmpView construction/destruction

CBmpView::CBmpView()
{
	// TODO: add construction code here

}

CBmpView::~CBmpView()
{
}

BOOL CBmpView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CBmpView drawing

void CBmpView::OnDraw(CDC* pDC)
{
	CBmpDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}
/////////////////////////////////////////////////////////////////////////////
// CBmpView diagnostics
#ifdef _DEBUG
void CBmpView::AssertValid() const
{
	CView::AssertValid();
}

void CBmpView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CBmpDoc* CBmpView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CBmpDoc)));
	return (CBmpDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
void CBmpView::OnPaint() 
{
	RECT rect;
	CPaintDC dc(this);      //建立响应WM_PAINT消息的DC
  	CDC *md = new CDC;       //建立一暂存DC md
 	CBitmap *bitmap = new CBitmap;  //建立CBitmap位图对象
 	GetClientRect(&rect);   //取得操作窗口大小
 	md->CreateCompatibleDC(&dc); //将md转换成与dc兼容的DC
	bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"zhulin.bmp",
		IMAGE_BITMAP,rect.right,rect.bottom,LR_LOADFROMFILE); 
//加载位图
	md->SelectObject(bitmap);  //选择位图对象到md中
	dc.BitBlt(0,0,rect.right,rect.bottom,md,0,0,SRCCOPY);
//将暂存DC中的位图贴到显示DC中
   delete md; //释放资源
  delete bitmap; //释放资源
}