qt simple tcp communication with ui projects

I want to create a simple Tcp Communication project but I get some problems and I dont know how to solve that problem. When I try to find solution all people tell add this code (QT += network)on .pro file but in ui projects I dont have any pro file so I dont know the find the solution.

//commu.h

Code:

#ifndef COMMU_H
    #define COMMU_H
 
        #include <QtWidgets/QMainWindow>
        #include "ui_commu.h"
        #include <QtNetwork/QTcpSocket>
        #include <QObject>
        #include <QString>
 
        class commu : public QMainWindow
        {
        	Q_OBJECT
 
        public:
        	commu(QWidget *parent = 0);
        	~commu();
 
        	 void start(QString address, quint16 port);
 
        private:
        	Ui::commuClass ui;
        	QTcpSocket client;
        public slots:
        	void startTransfer();
        };
 
        #endif // COMMU_H

//commu.cpp

Code:

#include "commu.h"
    #include <QtNetwork/QHostAddress>
 
    commu::commu(QWidget *parent)
    	: QMainWindow(parent)
    {
    	ui.setupUi(this);
 
    	connect(&client, SIGNAL(connected()),this,SLOT(startTransfer()));
    }
 
    commu::~commu()
    {
    	client.close();
    }
 
 
    void commu::start(QString address, quint16 port)
    {
    	QHostAddress addr(address);
    	client.connectToHost(addr, port);
    }
 
    void commu::startTransfer()
    {
    	client.write("Hello, world", 13);
    }

//main.cpp

Code:

#include "commu.h"
    #include <QtWidgets/QApplication>
    #include <QtCore>
 
    int main(int argc, char *argv[])
    {
    	QApplication a(argc, argv);
    	commu w;
    	w.show();
    	return a.exec();
 
    	commu client;
    	client.start("127.0.0.1", 8888);
 
    }

I get the errors:

Code:

1>commu.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall QTcpSocket::~QTcpSocket(void)" (__imp_??1QTcpSocket@@UAE@XZ) referenced in function "public: virtual __thiscall commu::~commu(void)" (??1commu@@UAE@XZ)
    1>commu.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QTcpSocket::QTcpSocket(class QObject *)" (__imp_??0QTcpSocket@@QAE@PAVQObject@@@Z) referenced in function "public: __thiscall commu::commu(class QWidget *)" (??0commu@@QAE@PAVQWidget@@@Z)
    1>commu.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QHostAddress::~QHostAddress(void)" (__imp_??1QHostAddress@@QAE@XZ) referenced in function "public: void __thiscall commu::start(class QString,unsigned short)" (?start@commu@@QAEXVQString@@G@Z)
    1>commu.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QHostAddress::QHostAddress(class QString const &)" (__imp_??0QHostAddress@@QAE@ABVQString@@@Z) referenced in function "public: void __thiscall commu::start(class QString,unsigned short)" (?start@commu@@QAEXVQString@@G@Z)
    1>c:\users\sel\documents\visual studio 2010\Projects\commu\Win32\Debug\\commu.exe : fatal error LNK1120: 4 unresolved externals