filedowndlg.cpp

MFC程序开发参考大全 【明日科技】宋坤 刘锐宁 李伟明 【丛 书 名】 软件工程师典藏 【出 版 社】 人民邮电出版社 本书详细介绍了MFC框架中所有常用类及控件的应用

// FileDownDlg.cpp : implementation file
//

#include "stdafx.h"
#include "FileDown.h"
#include "FileDownDlg.h"
#include <wininet.h>
#include <afxmt.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()

/////////////////////////////////////////////////////////////////////////////
// CFileDownDlg dialog

CFileDownDlg::CFileDownDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFileDownDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFileDownDlg)
		// 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 CFileDownDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFileDownDlg)
	DDX_Control(pDX, IDC_FILELIST, m_filelist);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFileDownDlg, CDialog)
	//{{AFX_MSG_MAP(CFileDownDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTDOWNLOAD, OnDownLoad)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFileDownDlg message handlers

BOOL CFileDownDlg::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
	
	m_filelist.SetExtendedStyle(LVS_EX_GRIDLINES);
	m_filelist.InsertColumn(0,"Index",LVCFMT_LEFT,20);
	m_filelist.InsertColumn(1,"文件URL地址",LVCFMT_LEFT,200);
	m_filelist.InsertColumn(2,"本地保存路径",LVCFMT_LEFT,200);

	return TRUE;
}

void CFileDownDlg::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 CFileDownDlg::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 CFileDownDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
CMutex cMutex(FALSE,NULL);
DWORD WINAPI ThreadProc1(LPVOID lparam)
{
	CFileDownDlg*pdlg=(CFileDownDlg*)lparam;
	CHAR szHead[]="Accept: */*\r\n\r\n";
	if(pdlg->strurl=="")return 0;
	VOID* szTemp[25];
	DWORD dwSize;
	HINTERNET hConnect;
	HINTERNET hOpen;
	FILE * pFile;
	cMutex.Lock();
	hOpen=InternetOpen(NULL,
		INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);

	hConnect=InternetOpenUrl(hOpen,pdlg->strurl,szHead,lstrlen(szHead),INTERNET_FLAG_DONT_CACHE,0);
	cMutex.Unlock();
	if(!hConnect)return 0;
	pFile=fopen(pdlg->strlocalname,"wb");
	while(1){
	InternetReadFile (hConnect,szTemp,50,&dwSize);
	if(!dwSize)
		goto end;
	else
	fwrite(szTemp,sizeof(char),dwSize,pFile);
	}
end:
	MessageBox(NULL,"下载完成","提示",MB_OK);
	fflush (pFile);
    fclose (pFile);
	InternetCloseHandle(hConnect);
	InternetCloseHandle(hOpen);
	return 0;
	
}
DWORD WINAPI ThreadProc2(LPVOID lparam)
{
	CFileDownDlg*pdlg=(CFileDownDlg*)lparam;
	if(pdlg->strurl=="")return 0;
	HINTERNET hInternetSession;
	HINTERNET hFTPSession;
	hInternetSession = InternetOpen(
                  "Microsoft Internet Explorer",
                  INTERNET_OPEN_TYPE_PRECONFIG,
                  NULL,NULL,0);
	hFTPSession=InternetConnect(
      hInternetSession,pdlg->strftpserver,
      INTERNET_INVALID_PORT_NUMBER,
	  NULL,NULL,
      INTERNET_SERVICE_FTP,0,(DWORD)0);
	if(!hFTPSession)return 0;      

	DWORD dwt=FtpGetFile(hFTPSession,
			pdlg->strresult,
			pdlg->strlocalname,
            FALSE,FILE_ATTRIBUTE_NORMAL,
            FTP_TRANSFER_TYPE_BINARY,0);

	if(dwt)MessageBox(NULL,"下载完成","提示",MB_OK);
	InternetCloseHandle(hInternetSession);
	InternetCloseHandle(hFTPSession);
	return 0;
	
}
void CFileDownDlg::OnDownLoad() 
{
	CString rightstrtmp,midstrtmp;
	
	int index=m_filelist.GetItemCount();
	GetDlgItem(IDC_EDFILENAME)->GetWindowText(strurl);
	if(strurl.IsEmpty())return;
	//检查URL,可以下载
	strurl.TrimLeft();
	strurl.TrimRight();
	//strprotocol设置协议字符串，strleft提取的协议字符
	CString strprotocol="",strleft;
	strleft=strurl.Left(7);
	if(strleft.Compare("http://")==0)
	{
		strprotocol="http";
	}
	else
	{
		strleft=strurl.Left(6);
		if(strleft.Compare("ftp://")==0)
		{
			strprotocol="ftp";
		}
		else
		{
			AfxMessageBox("不能识别的URL");
			return;
		}
	}
	if(strprotocol.Compare("http")==0)
	{
		rightstrtmp=strurl.Right(strurl.GetLength()-7);
		int pos=rightstrtmp.Find("/");
		midstrtmp=rightstrtmp.Right(rightstrtmp.GetLength()-pos-1);
		if(midstrtmp.IsEmpty())
		{
			AfxMessageBox("没有指定文件");
			return;
		}
		pos=midstrtmp.Find("/");
		while(pos>0)
		{
			midstrtmp=midstrtmp.Right(midstrtmp.GetLength()-pos-1);
			pos=midstrtmp.Find("/");
		}
		strresult=midstrtmp;

	}
	if(strprotocol.Compare("ftp")==0)
	{
		rightstrtmp=strurl.Right(strurl.GetLength()-6);
		int pos=rightstrtmp.Find("/");
		strftpserver=rightstrtmp.Left(pos);
		midstrtmp=rightstrtmp.Right(rightstrtmp.GetLength()-pos-1);
		strftpfile=midstrtmp;
		if(midstrtmp.IsEmpty())
		{
			AfxMessageBox("没有指定文件");
			return;
		}
		pos=midstrtmp.Find("/");
		while(pos>0)
		{
			midstrtmp=midstrtmp.Right(midstrtmp.GetLength()-pos-1);
			pos=midstrtmp.Find("/");
		}
		strresult=midstrtmp;
	}
	
	BROWSEINFO bi;   
	char buffer[MAX_PATH];   
	ZeroMemory(buffer,MAX_PATH);   
	bi.hwndOwner=GetSafeHwnd();   
	bi.pidlRoot=NULL;   
	bi.pszDisplayName=buffer;   
	bi.lpszTitle="选择一个文件夹";   
	bi.ulFlags=BIF_EDITBOX;   
	bi.lpfn=NULL;   
	bi.lParam=0;   
	bi.iImage=0; 
	LPITEMIDLIST pList=NULL;   
	if((pList=SHBrowseForFolder(&bi))!=NULL)   
	{   
		char path[MAX_PATH];   
		ZeroMemory(path,MAX_PATH);
		SHGetPathFromIDList(pList,path);
		m_filelist.InsertItem(index,"");
		//strindex为下载的序号
		CString strindex;strindex.Format("%d",index+1);
		m_filelist.SetItemText(index,0,strindex);
		m_filelist.SetItemText(index,1,strurl);
		CString str;
		path[strlen(path)]=0;
		str.Format("%s",path);
		//判断是否是根目录
		if(str.Right(1)!="\\")
		{
			str+="\\";
			str+=strresult;
		}
		else
			str+=strresult;
		strlocalname=str;
		m_filelist.SetItemText(index,2,strlocalname);
		if(strprotocol.Compare("http")==0)
		CreateThread(NULL,0,ThreadProc1,this,0,NULL);
		if(strprotocol.Compare("ftp")==0)
		CreateThread(NULL,0,ThreadProc2,this,0,NULL);
		strprotocol="";
	} 
}