rle8demodlg.cpp

rle静态图片压缩DELPHI代码,可以对DEPHI程序员了解有很大帮助

// RLE8DemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "RLE8Demo.h"
#include "RLE8DemoDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CRLE8DemoDlg dialog

CRLE8DemoDlg::CRLE8DemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRLE8DemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRLE8DemoDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CRLE8DemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRLE8DemoDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRLE8DemoDlg, CDialog)
	//{{AFX_MSG_MAP(CRLE8DemoDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_SAVE, OnButtonSave)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRLE8DemoDlg message handlers

BOOL CRLE8DemoDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
   m_bmp.SubclassDlgItem( IDC_STATIC_BITMAP, this);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CRLE8DemoDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CRLE8DemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CRLE8DemoDlg::OnButtonOpen() 
{
	// TODO: Add your control notification handler code here
   char sz_filter[] = "256 color Bitmap Files(*.bmp)|*.bmp||";

   CFileDialog  dlg(TRUE, "bmp", NULL,  OFN_FILEMUSTEXIST,  sz_filter, this);

   if ( IDOK == dlg.DoModal() )
   {
      m_bmp.LoadBitmapFile( dlg.GetPathName() );

      SIZE size = m_bmp.GetBitmapSize();

      this->MoveWindow(0, 0, (size.cx > 550)? size.cx+50 : 600, (size.cy > 200)? size.cy+100 : 300);
      GetDlgItem( IDC_STATIC_BITMAP)->MoveWindow(10, 50 , size.cx, size.cy);
   }
}

void CRLE8DemoDlg::OnButtonSave() 
{
   char sz_filter[] = "Bitmap Files(*.bmp)|*.bmp||";

   CFileDialog  dlg(FALSE, "bmp", NULL,  OFN_OVERWRITEPROMPT, sz_filter , this);
	// TODO: Add your control notification handler code here
   if ( IDOK == dlg.DoModal() )
	   m_bmp.SaveBitmapFile( dlg.GetPathName() );
}