ijl15dlg.cpp

这个文件是图像处理编程方面的参考资料

// IJL15Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "IJL15.h"
#include "IJL15Dlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CIJL15Dlg dialog

CIJL15Dlg::CIJL15Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CIJL15Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CIJL15Dlg)
		// 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 CIJL15Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CIJL15Dlg)
	DDX_Control(pDX, IDC_IMAGE_SHOW, m_ImgWnd);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CIJL15Dlg, CDialog)
	//{{AFX_MSG_MAP(CIJL15Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(ID_OPEN_IMAGE, OnOpenImage)
	ON_BN_CLICKED(ID_SAVE_IMAGE, OnSaveImage)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CIJL15Dlg message handlers

BOOL CIJL15Dlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CIJL15Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CIJL15Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CIJL15Dlg::OnOpenImage() 
{
    CFileDialog   dlg(TRUE, NULL, _T(""), OFN_HIDEREADONLY, _T("Image files (*.jpg, *.bmp, *.tga)|*.jpg; *.bmp; *.tga||")) ;
    if (dlg.DoModal() == IDOK)
    {
        CWaitCursor   aCur ;
        bstr_t   s = (LPCTSTR)dlg.GetPathName() ;
        g_img.Load (s) ;
    }
    Invalidate() ;
}

void CIJL15Dlg::OnSaveImage() 
{
    CFileDialog   dlg(FALSE, _T("jpg"), _T("c:\\ImageStone.jpg"), OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, _T("JPEG files (*.jpg)|*.jpg||")) ;
    if (dlg.DoModal() == IDOK)
    {
        CWaitCursor   aCur ;
        bstr_t   s = (LPCTSTR)dlg.GetPathName() ;
        g_img.Save (s, 90) ; // jpeg's quality
    }
    Invalidate() ;
}