Qt4.5 windows TextFind tutorial not working

[czlowiekcien]

I`m sorry but really i tryed everything. in comment are ways how I tryed. is compiling, text editor is filled in text but button not working as well cursor is not changing.
every widget is add in creator, how to make connect() working?

widget.cpp
//**************************************************************
#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include "widget.h"
#include "ui_widget.h"
 
Widget::Widget(QWidget *parent)
    : QWidget(parent), ui(new Ui::Widget)
{
    ui->setupUi(this);
    loadTextFile();
  //QObject::connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(huj()));
//connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(huj()));
  //QMetaObject::connectSlotsByName(this);
}
 
Widget::~Widget()
{
    delete ui;
}
void Widget::loadTextFile()
 {
     QFile inputFile(":/input.txt");
        inputFile.open(QIODevice::ReadOnly);
 
        QTextStream in(&inputFile);
        QString line = in.readAll();
        inputFile.close();
 
        ui->textEdit->setPlainText(line);
        QTextCursor cursor = ui->textEdit->textCursor();
        cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
 }
 void Widget::on_pushButton_clicked()
    {//ui->label->text()="huj";
         QString searchString = ui->lineEdit->text();
        ui->textEdit->find(searchString, QTextDocument::FindWholeWords);
    }
void Widget::huj()
    {//ui->label->text()="huj";
         QString searchString = ui->lineEdit->text();
        ui->textEdit->find(searchString, QTextDocument::FindWholeWords);
    }

widget.cpp
//**************************************************************
#include <QtCore/QFile>
#include <QtCore/QTextStream>
#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent), ui(new Ui::Widget)
{
    ui->setupUi(this);
    loadTextFile();
  //QObject::connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(huj()));
//connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(huj()));
  //QMetaObject::connectSlotsByName(this);
}

Widget::~Widget()
{
    delete ui;
}
void Widget::loadTextFile()
 {
     QFile inputFile(":/input.txt");
        inputFile.open(QIODevice::ReadOnly);

        QTextStream in(&inputFile);
        QString line = in.readAll();
        inputFile.close();

        ui->textEdit->setPlainText(line);
        QTextCursor cursor = ui->textEdit->textCursor();
        cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
 }
 void Widget::on_pushButton_clicked()
    {//ui->label->text()="huj";
         QString searchString = ui->lineEdit->text();
        ui->textEdit->find(searchString, QTextDocument::FindWholeWords);
    }
void Widget::huj()
    {//ui->label->text()="huj";
         QString searchString = ui->lineEdit->text();
        ui->textEdit->find(searchString, QTextDocument::FindWholeWords);
    }

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widget.h
//***********************************************************
#ifndef WIDGET_H
#define WIDGET_H
 
#include <QtGui/QWidget>
 
namespace Ui
{
    class Widget;
}
class Widget : public QWidget
{
    Q_OBJECT
 
public:
    Widget(QWidget *parent = 0);
    ~Widget();
 
public slots:
        void on_pushButton_clicked();
        void huj();
private:
    Ui::Widget *ui;
 
     void loadTextFile();
//void QMetaObject::connectSlotsByName(ui);
};
#endif // WIDGET_H

widget.h
//***********************************************************
#ifndef WIDGET_H
#define WIDGET_H

#include <QtGui/QWidget>

namespace Ui
{
    class Widget;
}
class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = 0);
    ~Widget();

public slots:
        void on_pushButton_clicked();
        void huj();
private:
    Ui::Widget *ui;

     void loadTextFile();
//void QMetaObject::connectSlotsByName(ui);
};
#endif // WIDGET_H

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