C / C++ / MFC

AnithaSubramani wrote:

Very urgent.............................

AnithaSubramani wrote:

So which control is better for this? Tree control or List Box or anything else?

void ThreadProc(void *param)
{
Copy(Source,Destination);
}
{
void CTestDlg::PathCame(const CString & FilePath)
{
//Some code here

HANDLE handle;
		handle = (HANDLE) _beginthread( ThreadProc,0,0); // create thread
		WaitForSingleObject(handle,INFINITE);
}

// helper for downloading data from http
class DownloadUrl
{
public:
	// constructor, requires the url of the resource to download
	DownloadUrl(const string& url);

	~DownloadUrl();

	// get (i.e. download) some content (into memory)
	int Get(void* buffer, int count);

	// how much of the content is already downloaded (as percentage)
	int PercentageRead();

private:
	// for PercentageRead
	DWORD m_Length;
	int m_BytesReadTotal;

	// managed pointers
	typedef auto_ptr<CInternetSession> apCInternetSession;
	typedef auto_ptr<CHttpConnection> apCHttpConnection;
	typedef auto_ptr<CHttpFile> apCHttpFile;

	// the resources will be automatically released (because they are managed pointers)
	apCInternetSession m_pInternetSession;
	apCHttpConnection m_pServer;
	apCHttpFile m_pFile;
};



DownloadUrl::DownloadUrl( const string& url )
{
	// use AfxParseURL to separate server from object
	CString server, object;
	DWORD service_type;
	INTERNET_PORT internet_port;
	AfxParseURL(url.c_str(), service_type, server, object, internet_port);
	if (server.IsEmpty() || object.IsEmpty())
		throw exception("Could not parse URL");

	// open an internet session
	m_pInternetSession = apCInternetSession(new CInternetSession("Microsoft Internet Explorer 5.0"));
	m_pInternetSession->SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 15000);
	m_pInternetSession->SetOption(INTERNET_OPTION_CONNECT_BACKOFF, 1000);
	m_pInternetSession->SetOption(INTERNET_OPTION_CONNECT_RETRIES, 2);
	m_pInternetSession->EnableStatusCallback(TRUE);

	// open a new connection to server
	m_pServer = apCHttpConnection(m_pInternetSession->GetHttpConnection(server, internet_port));
	if (m_pServer.get() == NULL)
		throw exception("HTTP connection failed");

	// make a GET request	
	m_pFile = apCHttpFile(m_pServer->OpenRequest("GET", object, NULL));
	if (m_pFile.get() == NULL)
		throw exception("Request failed");
	m_pFile->AddRequestHeaders("Accept: audio/x-aiff, audio/basic, audio/midi, audio/mpeg, audio/wav, image/jpeg, image/gif, image/jpg, image/png, image/mng, image/bmp, text/plain, text/html, text/htm\r\n");
	m_pFile->AddRequestHeaders("User-Agent: GetWebFile/1.0\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
	m_pFile->SendRequest();

	// check that everything was OK
	DWORD dwStatus;	
	m_pFile->QueryInfoStatusCode(dwStatus);
	if (dwStatus != HTTP_STATUS_OK)
		throw exception("URL was denied by server");

	// query the length of the file we're getting
	m_Length = 0;
	m_pFile->QueryInfo(HTTP_QUERY_CONTENT_LENGTH, m_Length);

	m_BytesReadTotal = 0;
}

DownloadUrl::~DownloadUrl()
{

}

int DownloadUrl::Get( void* buffer, int count )
{
	UINT bytes_read = m_pFile->Read(buffer, count);
	m_BytesReadTotal += bytes_read;
	return bytes_read;
}

int DownloadUrl::PercentageRead()
{
	if (!m_Length)
		return 0;

	// what percentage of content has been downloaded?
	double ratio = m_BytesReadTotal;
	ratio /= m_Length;
	ratio *= 100;

	return (int) ratio;
}

try {
	// start connection to server
	DownloadUrl download_url("http://example.com/content.html");

	// memory buffer
	static const unsigned buffer_size = 64*1024; // 64 KB
	char buffer[buffer_size+1];

	// output file
	ofstream tmpfile("c:\\file.html", ios::out | ios::binary);

	// download the content
	while (int bytes_read = download_url.Get(buffer, buffer_size))
	{
		tmpfile.write(buffer, bytes_read);

		// show progress
	}
	
} 
// catch exceptions
catch (exception& ) {
	// do something
}

return CW2CT(fi.achName);