bmpviewerview.cpp

本代码实现对BMP格式文件的读取

// BMPViewerView.cpp : implementation of the CBMPViewerView class
//

#include "stdafx.h"
#include "BMPViewer.h"

#include "BMPViewerDoc.h"
#include "BMPViewerView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView

IMPLEMENT_DYNCREATE(CBMPViewerView, CView)

BEGIN_MESSAGE_MAP(CBMPViewerView, CView)
	//{{AFX_MSG_MAP(CBMPViewerView)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView construction/destruction

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

}

CBMPViewerView::~CBMPViewerView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView drawing

void CBMPViewerView::OnDraw(CDC* pDC)
{
	CBMPViewerDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView printing

BOOL CBMPViewerView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CBMPViewerView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CBMPViewerView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView diagnostics

#ifdef _DEBUG
void CBMPViewerView::AssertValid() const
{
	CView::AssertValid();
}

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

CBMPViewerDoc* CBMPViewerView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CBMPViewerDoc)));
	return (CBMPViewerDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CBMPViewerView message handlers

void CBMPViewerView::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	//得到文档指针
	CBMPViewerDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	//是否已打开某个BMP文件
	if(pDoc->flag==1)
	{
		//指定是显示的颜色
		SetDIBitsToDevice(dc.m_hDC,0,0,pDoc->pbi->bmiHeader.biWidth,
			pDoc->pbi->bmiHeader.biHeight,0,0,0,
			pDoc->pbi->bmiHeader.biHeight,pDoc->lpshowbuf, 
			pDoc->pbi,DIB_RGB_COLORS);   
	}

	// Do not call CView::OnPaint() for painting messages
}