// VCGetDlg.cpp : implementation file
//

#include "stdafx.h"
#include "VCGet.h"
#include "VCGetDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CVCGetDlg dialog

CVCGetDlg::CVCGetDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CVCGetDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CVCGetDlg)
	m_InText = _T("");
	m_OutText = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CVCGetDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CVCGetDlg)
	DDX_Text(pDX, IDC_EDIT1, m_InText);
	DDX_Text(pDX, IDC_EDIT2, m_OutText);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CVCGetDlg, CDialog)
	//{{AFX_MSG_MAP(CVCGetDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVCGetDlg message handlers

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

// 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 CVCGetDlg::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 CVCGetDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

//動態(tài)生成CRC32的碼表
unsigned long Crc32Table[256];
void GetCRC32Table()
{
   int i,j;
   unsigned long Crc;
   for (i = 0; i < 256; i++)
    {
        Crc = i;
        for (j = 0; j < 8; j++)
        {
            if (Crc & 1)
                Crc = (Crc >> 1) ^ 0xEDB88320;
            else
                Crc >>= 1;
        }
        Crc32Table[i] = Crc;
    }
}

//獲取字符串CRC32校驗值
void GetCrc32(LPTSTR InStr)
{
	GetCRC32Table();
	ULONG  crc=0xffffffff;
	unsigned char* buffer;
	buffer = (unsigned char*)InStr;
	int len=strlen(InStr);
	for(int i=0; i<len; i++)
	{
		crc = (crc >> 8) ^ Crc32Table[(crc & 0xFF) ^ *buffer++];
	}
	char value[10]={0};
	//轉換成16進制字符串
	itoa(crc^0xffffffff,value,16);
	//小寫字符轉換成大寫字符
	for(i=0;i<strlen(value);i++)
	{
		value[i]=toupper(value[i]);
	}
	strcpy(InStr,value);
}

//調用示例
void CVCGetDlg::OnOK() 
{
	UpdateData(TRUE);
	char value[10]={0};
	char InData[100]={0};
	strcpy(InData,m_InText);
	GetCrc32(InData);
	m_OutText=InData;
	UpdateData(FALSE);
}