在发布模式下编译时（VS 2005），不会发出QNetworkAccessManager完成的信号

Question

I have a class that reads web pages. It works as expected when it is built in the debug mode in Visual studio, but doesn't work when it is built in release mode.

Basically, the QNetworkAccessManager 's finished signal never gets emitted.

I have the code stripped to the bare working minimum and it still doesn't work. I have tried to use QtNetworkd4.lib in release mode (the same library as in debug mode) and disable optimization, but no effect.

Qt version 4.4

Edit
Here is some sample code.

Header:

#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QStringList>

class WebReader : public QObject{
    Q_OBJECT

public:
    QStringList *pageData_;
    WebReader();
    ~WebReader();
    void fetch(const QString &url);

public slots:
    void slotReplyFinished(QNetworkReply *reply);

protected:
    QNetworkAccessManager *netManager_;

private: 
    QNetworkReply *netReply_;
};

Cpp:

WebReader::WebReader(){
    netManager_ = new QNetworkAccessManager(this);
    pageData_ = NULL;
    connect(netManager_, SIGNAL(finished(QNetworkReply *)), 
                            this, SLOT(slotReplyFinished(QNetworkReply *)));
}
WebReader::~WebReader(){    
}

// Send a request to read a web page
void WebReader::fetch(const QString &url){
    netReply_ = netManager_->get(QNetworkRequest(QUrl(url)));
}

// SLOT that accepts the read data from the webpage
void WebReader::slotReplyFinished(QNetworkReply *reply){
    if (NULL != pageData_){
        delete pageData_;
    }
    pageData_ = new QStringList(QString(reply->readAll()).split(QString("\n")));
    netReply_->deleteLater();
}

As you see, it is stripped down to a bare minimum that works in debug mode.

Answer 1

将libeay32和ssleay32复制到程序的同一文件夹中。