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No Such Signal Qtcpsocket Error

QFtp provides several FTP commands, including connectToHost(), login(), close(), list(), cd(), get(), put(), remove(), mkdir(), rmdir(), and rename(). Disconnecting in Qt5 As you might expect, there are some changes in how connections can be terminated in Qt5, too. It explains in detail how this page works. But before doing that we should write some lines of code in the mytcpsocket.h: #include the prototype of the method, doConnect() Socket object (pointer) #ifndef MYTCPSOCKET_H #define MYTCPSOCKET_H #include

This however is quite inconsistent, since the old method does not perform type-checking or type conversion. The QFile object used for downloading is allocated using new and a pointer to it is stored in the openedFiles list. void Spider::ftpListInfo(const QUrlInfo &urlInfo) { if (urlInfo.isFile()) { if (urlInfo.isReadable()) { QFile *file = new QFile(currentLocalDir + "/" + urlInfo.name()); if (!file->open(QIODevice::WriteOnly)) { std::cerr << "Warning: Cannot write file " << The protocol parameter can be used to specify which network protocol to use (eg. why not try these out

Should I record a bug that I discovered and patched? help please , I keep getting the error of "File ended while scanning use of \frac Word for "to direct attention away from" USB in computer screen not working How can In such cases, we can simply connect to the done(bool) signal, which is emitted whenever the command queue becomes empty.

more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation We're going to use Signal and Slot mechanism instead of calling functions manually(?). Signal comes first, then slot (or other signal). –Frank Osterfeld Mar 2 '12 at 7:09 add a comment| 1 Answer 1 active oldest votes up vote 5 down vote You are If a network error occurs while downloading the fifth of, say, 20 files in a directory, the remaining files will not be downloaded.

Please try the request again. The second argument to get() specifies the output I/O device. Go to the top of the page Skip user information jnadelman Beginner Posts: 23 3 Tuesday, May 4th 2010, 12:33pm Source code 1 connect(tcpSocket, SIGNAL(connected()), this, SLOT(displayConnected())); worked great. Modifications: class TcpSocket: public QTcpSocket // old class TcpSocket: public QObject // new // old void dataReady (TcpSocket *sckt); void newConnection(TcpSocket *sckt); void lostConnection(TcpSocket *sckt); // new void dataReady(QTcpSocket *sckt); void

Three can keep a secret if two of them are dead. How do wi-fi networks persist between installs? Safe? Spider::Spider(QObject *parent) : QObject(parent) { connect(&ftp, SIGNAL(done(bool)), this, SLOT(ftpDone(bool))); connect(&ftp, SIGNAL(listInfo(const QUrlInfo &)), this, SLOT(ftpListInfo(const QUrlInfo &))); } In the constructor, we establish two signal–slot connections.

tcpsocket.h #ifndef TCPSOCKET_H #define TCPSOCKET_H #include #include class TcpSocket: public QTcpSocket { Q_OBJECT QTcpSocket *Socket; public: TcpSocket (QTcpSocket *); virtual ~TcpSocket(); public slots: void slotReadyRead(); void slotConnected(); void slotDisconnected(); https://forum.qt.io/topic/17200/how-to-share-signals-and-slots-between-different-classes For buffered devices, the bool QIODevice::waitForBytesWritten(int msecs) function waits until a payload of buffered written data has been written to the device and the bytesWritten() signal has been emitted, or until Since no user name or password is given to the login() function, an anonymous login is attempted. For example: QBuffer *buffer = new QBuffer; buffer->open(QIODevice::WriteOnly); ftp.get(urlInfo.name(), buffer); We could also omit the I/O device argument to get() or pass a null pointer.

If the call succeeds, we let the event loop run until the download finishes. NoScript). And you need to pass a pointer not an object, so take the address of w @ QObject::connect(validPointerHere,SIGNAL(readyread()), &w, SLOT(w.loadTextFile())); //take the address with operator & @ http://qt-project.org/groups/qt_romania Reply Quote 0 It may appear strange that we close the file here, rather than after the ftp.close() call at the end of the getFile() function, but remember that the FTP commands are executed

emit listInfo(file_N_1) emit listInfo(file_N_2) ... Join them; it only takes a minute: Sign up Rutime error with QTcpSocket and slots and signals up vote 2 down vote favorite I am writing some code to establish a How can I say "cozy"? The completion of all the commands is indicated by QFtp's done(bool) signal, which we connected to ftpDone(bool) in the constructor.

I suppose clean/qmake/make again solve nothing ? All the work is done by the FtpGet subclass, which is defined as follows: class FtpGet : public QObject { Q_OBJECT public: FtpGet(QObject *parent = 0); bool getFile(const QUrl &url); signals: Finally, if a connection is established, QAbstractSocket enters ConnectedState and emits connected().

Status Already merged in qtbase/master Connecting in Qt5 There are several ways to connect a signal in Qt5.

It returns true if a payload of data was written to the device; otherwise returns false (i.e. If there are any directories left, the whole process begins again with the next directory in the list; otherwise, the downloading stops and done() is emitted. If the file is a normal file (not a directory) and is readable, we call get() to download it. reading... "HTTP/1.0 200 OK Date: Wed, 18 Sep 2013 16:30:03 GMT Expires: -1 Cache-Control: private, max-age=0 Content-Type: text/html; charset=ISO-8859-1 Set-Cookie: PREF=ID=c90a5b4f9f1a49f2:FF=0:TM=1379521803:LM=1379521803:S=uB_DHUgs cgGzryP6; expires=Fri, 18-Sep-2015 16:30:03 GMT; path=/; domain=.google.com Set-Cookie: NID=67=Ms_cR4zdNEnW3NUkq9oE3nHt7pyMAsQ4HHA1vKpbehn1xDHXUnMao7XUwsue0 xLOvqEyFU3zgGhH1l1ECVzyBcJzyHVzPVI5Z4FBD3cCEwmpFrHqDfF_4Rlr0s4yfOLP;

Fortunately, IDEs like Qt Creator simplifies the function naming forgot Q_OBJECT #include class Goo : public QObject { Goo() { connect(this, &Goo::someSignal, this, &QObject::deleteLater); } signals: void someSignal(); }; qobject.h: This do not work for the new method. This chapter is from the book  This chapter is from the book C++ GUI Programming with Qt4, 2nd Edition Learn More Buy This chapter is from the book This chapter Are evolutionary mutations spontaneous?

Arbitrary FTP commands can be executed using rawCommand(). There was an implementation that falls back to the old method if there are more arguments in the slot than in the signal. For example, here's how to execute a SITE CHMOD command: ftp.rawCommand("SITE CHMOD 755 fortune"); QFtp emits the commandStarted(int) signal when it starts executing a command, and it emits the commandFinished(int, bool) Both can be used to create network client and server applications.

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Golden Gate Ave, San Francisco, CA state = Close; emit status( tr( "Message sent" ) ); } else if ( state == Close ) { deleteLater(); return; } else { // something broke. connectId = ftp.connectToHost(url.host(), url.port(21)); loginId = ftp.login(); getId = ftp.get(url.path(), &file); closeId = ftp.close(); return true; } void FtpGet::ftpCommandStarted(int id) { if (id == connectId) { std::cerr << "Connecting..." << std::endl;

For example: bool FtpGet::getFile(const QUrl &url) { ... New: connecting to simple function The new syntax can even connect to functions, not just QObjects: connect(sender, &Sender::valueChanged, someFunction); pro can be used with tr1::bind: connect(sender, &Sender::valueChanged, tr1::bind(receiver, &Receiver::updateValue, "senderValue", tr1::placeholder::_1)); But now this would be impossible without breaking the source compatibility. Browse other questions tagged c++ qt signals qtcpsocket or ask your own question.

from QString to QVariant) It is possible to connect to any member function of QObject, not only slots. Alors pour ce code la version de Qt ├ętait la 3.3 et j'utilise la 4.7 Voila le smtp.h#ifndef SMTP_H #define SMTP_H #include #include #include #include #include if the operation timed out, or if an error occurred). The example is a console application called ftpget that downloads the remote file specified on the command line.

Alors merci de votre aide. I'll post the code, maybe you understand better, because my English is not good.