学步园

利用ftplib也可以很容易的实现文件上载，并且可以显示进度。以下是我上周末写的一段程序代码，供大家共享：
struct REMFILE {
    struct REMFILE *next;
    int fsz;                //文件大小
    char *fnm;              //文件名称
};

//发送进度信息给主窗口进行显示
static int log_progress(netbuf *ctl, int xfered, void *arg)
{
    struct REMFILE *f = (struct REMFILE *) arg;
    int pct = (int)(xfered*1.0/f->fsz*100);
    HWND hWnd = (HWND)(AfxGetApp()->GetMainWnd()->GetSafeHwnd());
    PostMessage(hWnd,WM_PROGRESS,pct,NULL);
    return 1;
}

//FTP上传
bool MyFtp::up(const string& sourceFileName, const string& targetFileName)
{
    int sts=0;
    int fsz;

    if (!connect())
        return false;
    FtpOptions(FTPLIB_CALLBACK, (long) NULL, conn);

    struct REMFILE *f;
    f = (struct REMFILE *) malloc(sizeof(struct REMFILE));
    memset(f,0,sizeof(struct REMFILE));
    f->fnm = strdup(sourceFileName.c_str());
    fsz = TPub::getFileSize(f->fnm);
    f->fsz = fsz;
    fsz = fsz/100;
    if (fsz)
    {
        FtpOptions(FTPLIB_CALLBACK, (long) log_progress, conn);
        FtpOptions(FTPLIB_IDLETIME, (long) 1000, conn);
        FtpOptions(FTPLIB_CALLBACKARG, (long) f, conn);
        FtpOptions(FTPLIB_CALLBACKBYTES, (long) fsz, conn);
    }
    sts = FtpPut(f->fnm,targetFileName.c_str(),'I',conn);
    if (sts)
    {
      ::PostMessage((HWND)(AfxGetApp()->GetMainWnd()->GetSafeHwnd()),WM_PROGRESS,100,NULL);
    }
    free(f->fnm);
    free(f);
   
    if (!sts)
    {
        _err = "ftp error: ";
        _err = _err + FtpLastResponse(conn);
        return false;
    }
 
    return true;
}

其中：
HWND hWnd = (HWND)(AfxGetApp()->GetMainWnd()->GetSafeHwnd());
PostMessage(hWnd,WM_PROGRESS,pct,NULL);
实现了获取主窗口句柄并发送消息给主窗口，主窗口接收到这个消息后进行运行进度的显示。代码如下：
LRESULT CFtpTestDlg::OnProgress(WPARAM wParam,LPARAM lParam)
{
    UpdateData(TRUE);
    int progress=(int)wParam;
    string str = "";
    str = str + TPub::intToString(progress) + "%";
    m_percent = str.c_str();
    UpdateData(FALSE);
    return 0;
}

最后程序运行起来之后效果如下：

写的不对的地方请大家批评。