imageviewerview.cpp

Visual+C+++6[1].0实用教程代码 Visual+C+++6[1].0实用教程代码

// ImageViewerView.cpp : implementation file
//

#include "stdafx.h"
#include "ImageViewerView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CImageViewerView

IMPLEMENT_DYNCREATE(CImageViewerView, CFormView)

CImageViewerView::CImageViewerView()
	: CFormView(CImageViewerView::IDD)
{
	//{{AFX_DATA_INIT(CImageViewerView)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
 m_pImageObject = NULL;
}

CImageViewerView::~CImageViewerView()
{
 delete m_pImageObject;
 m_pImageObject = NULL;
}

void CImageViewerView::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CImageViewerView)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


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

/////////////////////////////////////////////////////////////////////////////
// CImageViewerView diagnostics

#ifdef _DEBUG
void CImageViewerView::AssertValid() const
{
	CFormView::AssertValid();
}

void CImageViewerView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CImageViewerView message handlers

void CImageViewerView::OnDraw(CDC* pDC) 
{
 if (!m_pImageObject)
 {
  CDocument* pDoc = GetDocument();
  ASSERT_VALID(pDoc);

  CString strPathName = pDoc->GetPathName();
  ASSERT(0 < strPathName.GetLength());
  if (0 < strPathName.GetLength())
  {
   m_pImageObject = new CImageObject(strPathName); 
  }
 }

 if (m_pImageObject)
 {
  m_pImageObject->SetPalette(pDC); 
  m_pImageObject->Draw(pDC); 
 }
}