displaymodedoc.cpp

visual c++数字图像与图形处理中的光盘内容

// DisplayModeDoc.cpp : implementation of the CDisplayModeDoc class
//

#include "stdafx.h"
#include "DisplayMode.h"

#include "DisplayModeDoc.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDisplayModeDoc

IMPLEMENT_DYNCREATE(CDisplayModeDoc,  CDocument)

BEGIN_MESSAGE_MAP(CDisplayModeDoc,  CDocument)
	//{{AFX_MSG_MAP(CDisplayModeDoc)
	ON_COMMAND(ID_FILE_OPEN,  OnFileOpen)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDisplayModeDoc construction/destruction

CDisplayModeDoc::CDisplayModeDoc()
{
	// TODO: add one-time construction code here
	m_pDib = NULL;
}

CDisplayModeDoc::~CDisplayModeDoc()
{
	if(m_pDib) delete m_pDib;
}

BOOL CDisplayModeDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CDisplayModeDoc serialization

void CDisplayModeDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

/////////////////////////////////////////////////////////////////////////////
// CDisplayModeDoc diagnostics

#ifdef _DEBUG
void CDisplayModeDoc::AssertValid() const
{
	CDocument::AssertValid();
}

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

/////////////////////////////////////////////////////////////////////////////
// CDisplayModeDoc commands

void CDisplayModeDoc::OnFileOpen() 
{
	// TODO: Add your command handler code here
	CFileDialog fileOpenDlg(TRUE, "bmp", "*.bmp", NULL, "Bitmap Files(*.bmp)", NULL);
	int nRespond = fileOpenDlg.DoModal();
	if(nRespond == IDOK)
	{
		CString filePath = fileOpenDlg.GetPathName();
		m_pDib = new CDib(filePath);
		if(m_pDib->IsValid())
			SetTitle(filePath);
		else
			DeleteContents();
	}
	
	UpdateAllViews(0);
	
}



void CDisplayModeDoc::DeleteContents() 
{
	// TODO: Add your specialized code here and/or call the base class
	if (m_pDib)
    {
        delete m_pDib;
        m_pDib = NULL;
    }

	CDocument::DeleteContents();
}