8
Sau đây biên dịch lỗi là những gì tôi có:Lỗi với `QObject` lớp con và copy constructor:` QObject :: QObject (const QObject &) là private`
/usr/lib/qt-3.3/include/qobject.h: In copy constructor Product::Product(const Product&):
/usr/lib/qt-3.3/include/qobject.h:211: error: QObject::QObject(const QObject&) is private
Product.h:20: error: within this context
HandleTCPClient.cpp: In member function int Handler::HandleTCPClient(int, std::string, std::string):
HandleTCPClient.cpp:574: note: synthesized method Product::Product(const Product&) first required here
HandleTCPClient.cpp:574: error: initializing argument 1 of std::string productDetails(Product)
/usr/lib/qt-3.3/include/qobject.h: In member function Product& Product::operator=(const Product&):
Product.h:20: instantiated from void std::vector<_Tp, _Alloc>::_M_insert_aux(__gnu_cxx::__normal_iterator<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer, std::vector<_Tp, _Alloc> >, const _Tp&) [with _Tp = Product, _Alloc = std::allocator<Product>]
/usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_vector.h:610: instantiated from âvoid std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp = Product, _Alloc = std::allocator<Product>]â
HandleTCPClient.cpp:173: instantiated from here
/usr/lib/qt-3.3/include/qobject.h:212: error: QObject& QObject::operator=(const QObject&) is private
Product.h:20: error: within this context
/usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/vector.tcc: In member function void std::vector<_Tp, _Alloc>::_M_insert_aux(__gnu_cxx::__normal_iterator<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer, std::vector<_Tp, _Alloc> >, const _Tp&) [with _Tp = Product, _Alloc = std::allocator<Product>]:
/usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/vector.tcc:260: note: synthesized method âProduct& Product::operator=(const Product&) first required here
make: *** [HandleTCPClient.o] Error 1
Một phần của dòng HandleTCPClient.cpp tôi 574:
Product tempProduct;// temporary Product storage variable
tempProduct.setHandler(this);
...
else if (output[1] == '5') // description
{
output.erase(0,2); // erase the sequence numbers
tempProduct.description = output;
LINE 574 output = productDetails(tempProduct); // obtain client given information about selling product
}
Product.h ::
#include <string>
#include <qtimer.h>
#include "HandleTCPClient.h"
#ifndef PRODUCT_H
#define PRODUCT_H
#include <qobject.h>
#include <qgl.h>
class Handler;
//Define ourselves a product class
class Product : public QObject
{
Q_OBJECT
void startTimer();
public:
Product();
string seller, itemName, description, highestBidder;
double price, min, buyingPrice, currentBid;
int time;
bool isSold;
Handler *handler;
void setHandler(Handler *h);
public slots:
void setProductToSold();
};
#endif
Product.cpp ::
#include <string>
using std::string;
#include "Product.h"
Product::Product()
{
seller = "";
itemName = "";
price = 0.00;
min = 0.00;
buyingPrice = 0.00;
time = 0;
description = "";
highestBidder = "None";
currentBid = 0.00;
}
void Product::setHandler(Handler *h)
{
handler = h;
}
Cảm ơn tất cả sự giúp đỡ =)
Cảm ơn bạn đã giải thích ngắn gọn - điều này vừa tiết kiệm cho tôi rất nhiều thời gian. (Tôi đã đi qua giá trị, không tham chiếu trong một khe cắm cho những người đến này) –