dsplitview.cpp

< VC++图像处理程程序设计>>配套光盘,这是第4章的灰度变换的程序

// DSplitView.cpp : implementation of the CDSplitView class
//

#include "stdafx.h"
#include "DSplit.h"

#include "DSplitDoc.h"
#include "DSplitView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDSplitView

IMPLEMENT_DYNCREATE(CDSplitView, CView)

BEGIN_MESSAGE_MAP(CDSplitView, CView)
	//{{AFX_MSG_MAP(CDSplitView)
	ON_WM_ERASEBKGND()
	ON_COMMAND(ID_YUANTU, OnYuantu)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CDSplitView construction/destruction

CDSplitView::CDSplitView()
{
	state1=0;	// TODO: add construction code here
}

CDSplitView::~CDSplitView()
{
}

BOOL CDSplitView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	
	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDSplitView drawing

void CDSplitView::OnDraw(CDC* pDC)
{       
	if(state1==1)
	{
		CBitmap m_bitmap;
		HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(filename),IMAGE_BITMAP,
			0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
        m_bitmap.Attach (hBitmap);
		CDC dcImage;
		if(!dcImage.CreateCompatibleDC (pDC))
			return;
		BITMAP bm;
		m_bitmap.GetBitmap (&bm);
        dcImage.SelectObject (&m_bitmap);
		pDC->BitBlt (0,0,bm.bmWidth ,bm.bmHeight ,&dcImage,0,0,SRCCOPY);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CDSplitView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDSplitView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDSplitView message handlers

BOOL CDSplitView::OnEraseBkgnd(CDC* pDC) 
{
	CRect rect;
	GetClientRect(&rect);
	pDC->FillSolidRect(&rect,::GetSysColor(COLOR_WINDOW));
	return TRUE;
}



void CDSplitView::OnYuantu() 
{
	// TODO: Add your command handler code here
	CDSplitDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
    filename=pDoc->filename;
 	state1=1;
	Invalidate();
}