frontdlg.cpp

基于块方向的图像无损压缩代码

// FrontDlg.cpp : implementation file
//

#include "stdafx.h"
#include "compress.h"
#include "FrontDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFrontDlg dialog


CFrontDlg::CFrontDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFrontDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFrontDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


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


BEGIN_MESSAGE_MAP(CFrontDlg, CDialog)
	//{{AFX_MSG_MAP(CFrontDlg)
	ON_WM_PAINT()
	ON_WM_TIMER()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFrontDlg message handlers

BOOL CFrontDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	CRect rc;
	int nWidth;
	int nHeight;
	nWidth=GetSystemMetrics(SM_CXSCREEN);
	nHeight=GetSystemMetrics(SM_CYSCREEN);
	GetWindowRect(rc); 
	MoveWindow((nWidth-rc.Width())/2,(nHeight-rc.Height())/2,rc.Width(),rc.Height(),TRUE);

	m_Timer=SetTimer(101,3000,NULL);	
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CFrontDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
    AfxGetApp()->DoWaitCursor(-1);
	// TODO: Add your message handler code here
	CDC *pMemDC=new CDC;
	CBitmap *pOldBitmap;    
	if(pMemDC->CreateCompatibleDC(&dc))
	{                   
		CBitmap  *bitmap=new CBitmap;
		if(bitmap->LoadBitmap(IDB_TITLE))
		{                             
			CRect rect;
			GetClientRect(rect);
		 	pOldBitmap=pMemDC->SelectObject(bitmap); 
			BITMAP bm;
			bitmap->GetObject(sizeof(BITMAP),&bm);
		 	dc.StretchBlt(0,0,rect.Width(),rect.Height(),pMemDC,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
			pMemDC->SelectObject(pOldBitmap);
		}                                 
		ReleaseDC(pMemDC); 
		bitmap->DeleteObject();  
		delete bitmap;
	}       
	delete pMemDC;
}

void CFrontDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	//CDialog::OnTimer(nIDEvent);
	KillTimer(m_Timer);	
	EndDialog(IDOK);
}

void CFrontDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	AfxGetApp()->DoWaitCursor(0);	
}