crc32projdlg.cpp

CRC32算法, 可以对字符串或文件进行CRC32计算, 带进度条.内含VC++6.0源码

// CRC32ProjDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CRC32Proj.h"
#include "CRC32ProjDlg.h"

#include "AboutDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCRC32ProjDlg dialog

CCRC32ProjDlg::CCRC32ProjDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCRC32ProjDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCRC32ProjDlg)
		// 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 CCRC32ProjDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCRC32ProjDlg)
	DDX_Control(pDX, IDC_PROGRESS, m_Pos);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCRC32ProjDlg, CDialog)
	//{{AFX_MSG_MAP(CCRC32ProjDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_CBN_SELCHANGE(IDC_COMBO_TYPE, OnSelchangeComboType)
	ON_BN_CLICKED(IDC_BTN_ABOUT, OnBtnAbout)
	ON_BN_CLICKED(IDC_BTN_CALCULATION, OnBtnCalculation)
	ON_EN_CHANGE(IDC_EDIT_DATA, OnChangeEditData)
	ON_BN_CLICKED(IDC_CHECK_UPPER, OnCheckUpper)
	ON_BN_CLICKED(IDC_BTN_BROWSE, OnBtnBrowse)
	ON_WM_DROPFILES()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCRC32ProjDlg message handlers

BOOL CCRC32ProjDlg::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
	
	((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->AddString("文件");
	((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->AddString("字符串");
	((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->SetCurSel(0);
	AdjustWindow(true);

	GetDlgItem(IDC_PROGRESS)->ShowWindow(SW_HIDE);
	((CButton*)GetDlgItem(IDC_CHECK_UPPER))->SetCheck(TRUE);
	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 CCRC32ProjDlg::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 CCRC32ProjDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCRC32ProjDlg::AdjustWindow(bool bFlag)
{
	RECT	rcEdit;
	RECT	rcButton;
	::GetWindowRect(GetDlgItem(IDC_EDIT_RESULT)->m_hWnd, &rcEdit);
	::GetWindowRect(GetDlgItem(IDC_BTN_CALCULATION)->m_hWnd, &rcButton);

	if(!bFlag)
	{
		GetDlgItem(IDC_EDIT_DATA)->SetWindowPos(NULL, 0, 0, 
												(rcEdit.right - rcEdit.left) + (rcButton.right - rcButton.left), 
												rcEdit.bottom - rcEdit.top, 
												SWP_NOMOVE | SWP_NOOWNERZORDER);
		GetDlgItem(IDC_BTN_BROWSE)->ShowWindow(SW_HIDE);
		((CEdit*)GetDlgItem(IDC_EDIT_DATA))->SetReadOnly(false);
		GetDlgItem(IDC_BTN_CALCULATION)->EnableWindow(false);
		::DragAcceptFiles(m_hWnd, false);
	}
	else
	{
		GetDlgItem(IDC_EDIT_DATA)->SetWindowPos(NULL, 0, 0, 
													rcEdit.right - rcEdit.left, 
													rcEdit.bottom - rcEdit.top, 
													SWP_NOMOVE | SWP_NOOWNERZORDER);
		GetDlgItem(IDC_BTN_BROWSE)->ShowWindow(SW_SHOW);
		((CEdit*)GetDlgItem(IDC_EDIT_DATA))->SetReadOnly(true);
		GetDlgItem(IDC_BTN_CALCULATION)->EnableWindow(true);
		::DragAcceptFiles(m_hWnd, true);
	}
	GetDlgItem(IDC_COMBO_TYPE)->SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOSIZE );
}

void CCRC32ProjDlg::OnSelchangeComboType() 
{
	SetDlgItemText(IDC_EDIT_DATA, "");
	SetDlgItemText(IDC_EDIT_RESULT, "");

	if(((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->GetCurSel() == 0)
		AdjustWindow(true); 
	else if(((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->GetCurSel() == 1)
		AdjustWindow(false);		
}

void CCRC32ProjDlg::OnBtnAbout() 
{
	CAboutDlg dlg;
	dlg.DoModal();
}

void CCRC32ProjDlg::OnBtnCalculation() 
{
	CString strButton;
	GetDlgItemText(IDC_BTN_CALCULATION, strButton);
	if(strButton == "停止(&S)")
	{
		SetDlgItemText(IDC_BTN_CALCULATION, "计算(&C)");
		m_CRC32Ex.StopCalcFile();
		return ;
	}

	CString strInput;
	GetDlgItemText(IDC_EDIT_DATA, strInput);
	if(strInput.IsEmpty())
	{
		SetDlgItemText(IDC_EDIT_RESULT, "");
		return ;
	}

	GetDlgItem(IDC_PROGRESS)->ShowWindow(SW_SHOW);
	GetDlgItem(IDC_CHECK_UPPER)->ShowWindow(SW_HIDE);
	SetDlgItemText(IDC_BTN_CALCULATION, "停止(&S)");
	SetDlgItemText(IDC_EDIT_RESULT, "");

	void* proc = m_Thunk.Stdcall(this, Thunk::GetMemberFxnAddr(&CCRC32ProjDlg::ThreadProc));
	HANDLE hThread = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)proc, 0, 0, 0 );
	CloseHandle(hThread);
}

void CCRC32ProjDlg::OnChangeEditData() 
{
	if(((CComboBox*)GetDlgItem(IDC_COMBO_TYPE))->GetCurSel() == 1)
	{
		CString strInput;
		GetDlgItemText(IDC_EDIT_DATA, strInput);
		if(strInput.IsEmpty())
		{
			SetDlgItemText(IDC_EDIT_RESULT, "");
			return ;
		}

		string strCRC32 = "";
		if(((CButton*)GetDlgItem(IDC_CHECK_UPPER))->GetCheck())
			strCRC32  = m_CRC32Ex.GetCRC32FromBuffer((unsigned char *)(LPCTSTR)strInput, strInput.GetLength(), true);
		else
			strCRC32  = m_CRC32Ex.GetCRC32FromBuffer((unsigned char *)(LPCTSTR)strInput, strInput.GetLength(), false);

		SetDlgItemText(IDC_EDIT_RESULT, strCRC32.c_str());
	}
}

void CCRC32ProjDlg::OnCheckUpper() 
{
	CString strInput;
	GetDlgItemText(IDC_EDIT_RESULT, strInput);
	if(strInput.IsEmpty())
		return ;

	if(((CButton*)GetDlgItem(IDC_CHECK_UPPER))->GetCheck())
		SetDlgItemText(IDC_EDIT_RESULT, CharUpper((LPSTR)(LPCTSTR)strInput));
	else
		SetDlgItemText(IDC_EDIT_RESULT, CharLower((LPSTR)(LPCTSTR)strInput));
}

void CCRC32ProjDlg::OnProcess(int nProgress)
{
	m_Pos.SetPos(nProgress);
}

void CCRC32ProjDlg::OnBtnBrowse() 
{
	FileDlg dlg;
	vector<string> Files = dlg.GetOpenFileName(m_hWnd, false);
	if(Files.size() > 0)
		SetDlgItemText(IDC_EDIT_DATA, Files[0].c_str());
}

DWORD CCRC32ProjDlg::ThreadProc( LPVOID lpParameter )
{
	CString strInput;
	GetDlgItemText(IDC_EDIT_DATA, strInput);
	if(strInput.IsEmpty())
	{
		SetDlgItemText(IDC_EDIT_RESULT, "");
		return 0;
	}

	MemberFxn Addr(this, &CCRC32ProjDlg::OnProcess);
	string strCRC32 = "";
	if(((CButton*)GetDlgItem(IDC_CHECK_UPPER))->GetCheck())
		strCRC32  = m_CRC32Ex.GetCRC32FromFile((char*)(LPCTSTR)strInput, true, Addr);
	else
		strCRC32  = m_CRC32Ex.GetCRC32FromFile((char*)(LPCTSTR)strInput, false, Addr);


	string strErr = m_CRC32Ex.GetError();

	if(strCRC32.empty() || !strErr.empty())
	{
		AfxMessageBox(strErr.c_str());
		GetDlgItem(IDC_PROGRESS)->ShowWindow(SW_HIDE);
		GetDlgItem(IDC_CHECK_UPPER)->ShowWindow(SW_SHOW);
		SetDlgItemText(IDC_BTN_CALCULATION, "计算(&C)");
		return 0;
	}

	SetDlgItemText(IDC_EDIT_RESULT, strCRC32.c_str());

	AfxMessageBox("计算完成");
	GetDlgItem(IDC_PROGRESS)->ShowWindow(SW_HIDE);
	GetDlgItem(IDC_CHECK_UPPER)->ShowWindow(SW_SHOW);
	SetDlgItemText(IDC_BTN_CALCULATION, "计算(&C)");

	return 0;
}
void CCRC32ProjDlg::OnDropFiles(HDROP hDropInfo) 
{
	SetDlgItemText(IDC_EDIT_DATA, "");
	SetDlgItemText(IDC_EDIT_RESULT, "");

	int nFiles = ::DragQueryFile(hDropInfo, 0xFFFFFFFF, NULL, NULL);
	if(nFiles > 0)
	{
		char buf[MAX_PATH] = { 0 };
		memset(buf, 0, MAX_PATH);
		::DragQueryFile(hDropInfo, 0, buf, sizeof(buf));

//		if(GetFileAttributes(buf) == FILE_ATTRIBUTE_DIRECTORY)
//			SetDlgItemText(IDC_EDIT_DATA, "");
//		else
//			SetDlgItemText(IDC_EDIT_DATA, buf);

		WIN32_FIND_DATA data;
		HANDLE hFile = ::FindFirstFile(buf, &data);
		if(hFile == INVALID_HANDLE_VALUE) 
			return ;

		CloseHandle(hFile);

		if(data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
			return ;

		SetDlgItemText(IDC_EDIT_DATA, buf);
	}
	
	CDialog::OnDropFiles(hDropInfo);
}