自己写的一个在线升级的程序!

void CUpdateDlg::OnButtonDoupdate()
{

// 读取升级文件
CFileStatus rStatus;
CString szIniData;
CString inFile;
CString tmp;

inFile=m_szPath+"//update.ini";

CFile UpdateFile;
UpdateFile.Open( inFile, CFile::modeRead);
UpdateFile.GetStatus(inFile,rStatus);
UpdateFile.Read(szIniData.GetBuffer(rStatus.m_size),rStatus.m_size);
UpdateFile.Close();

CStringArray arType;
CStringArray arVersion;
for(int i=1;i<=27;i+=2){
AfxExtractSubString(tmp,szIniData,i,'/n');
tmp.TrimRight();
tmp.TrimRight();
arType.Add(tmp);
}
for(int j=2;j<=28;j+=2){
AfxExtractSubString(tmp,szIniData,j,'/n');
tmp.TrimRight();
tmp.TrimRight();
arVersion.Add(tmp);
}

GetDlgItem(IDC_BUTTON_DOUPDATE)->EnableWindow(FALSE);

CProgressCtrl* pBar = (CProgressCtrl*)GetDlgItem(IDC_PROGRESS_UPDATE);
pBar->SetPos(5);
m_szEditMessage = "/r/n取得网络升级地址/r/n"+ServerUrl;
UpdateData(FALSE);

CInternetSession mySession(NULL,0);
CHttpFile* myHttpFile=NULL;
BOOL bIsNewer = FALSE;
CString myData;
CString myUrl;
CStringm_SiteRec;
myUrl = ServerUrl+"?pro=update";
myHttpFile=(CHttpFile*)mySession.OpenURL(myUrl);
while(myHttpFile->ReadString(myData)){m_SiteRec = myData;}
myHttpFile->Close();
mySession.Close();

if(m_SiteRec=="ok"){
pBar->SetPos(10);
m_szEditMessage = "/r/n已经连通....../r/n"+m_szEditMessage;
UpdateData(FALSE);

for(int k=0;k<14;k++){
CInternetSession mySession(NULL,0);
CHttpFile* myHttpFile=NULL;
m_SiteRec.Empty();
myUrl = ServerUrl+"?pro=update&module="+arType[k]+"&version="+arVersion[k];
myHttpFile=(CHttpFile*)mySession.OpenURL(myUrl);
while(myHttpFile->ReadString(myData)){m_SiteRec += myData;}
if(m_SiteRec != "ok"){
CString inFile;
inFile=m_szPath+"//data//"+arType[k];
CFile NetFile;
NetFile.Open( inFile, CFile::modeCreate | CFile::modeWrite);
NetFile.Write( m_SiteRec, m_SiteRec.GetLength());
NetFile.Close();
bIsNewer = TRUE;
}
pBar->SetPos((k+1)*(100-10)+10);
m_szEditMessage = "/r/n检查"+arType[k]+"文件... 成功!/r/n"+m_szEditMessage;
UpdateData(FALSE);
myHttpFile->Close();
mySession.Close();
}

if(bIsNewer){
::MessageBox(NULL,"文件已经更新成功!",NULL,MB_ICONASTERISK);
}else{
::MessageBox(NULL,"您的数据文件已经是最新版本了!",NULL,MB_ICONASTERISK);
}
}else{
::MessageBox(NULL,"没有连接网络或者找不到升级服务器,请检查",NULL,MB_ICONASTERISK);
pBar->SetPos(100);
}

// 下面是完成了.
GetDlgItem(IDCANCEL)->ShowWindow(SW_HIDE);
GetDlgItem(IDOK)->ShowWindow(SW_SHOW);
GetDlgItem(IDOK)->SetFocus();
}