Urgent Help regarding Line numbering

I have been posting various threads but not able to get a fruitful reply. I have been trying to introduce line numbering in a text edit..I would like to post all the code that i have done till now.

mainwindow.h

Code:

---

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include<frameclass.h>
#include <QMainWindow>
#include<frameclass.h>
#include<Painter.h>
 
namespace Ui {
class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
 
 
    ~MainWindow();
 
 
 
 
 
private:
    Ui::MainWindow *ui;
 
};
 
#endif // MAINWINDOW_H

---

mainwindow.cpp

Code:

---

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<qtextcursor.h>
#include<frameclass.h>
#include<qpainter.h>
#include<Painter.h>
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
 
}
 
 
 
MainWindow::~MainWindow()
{
    delete ui;
}

---

I have created a separate class "frameclass.h" to implement paint event.

frameclass.h

Code:

---

#ifndef FRAMECLASS_H
#define FRAMECLASS_H
#include<QWidget>
#include<QFrame>
#include<qpainter.h>
#include<qmainwindow.h>
#include<QTextBlock>
 
 
 
 
 
class frameclass : public QFrame
{
 
    Q_OBJECT
public:
    frameclass( QWidget * parent) : QFrame(parent)
    {
 
 
    }
 
 
    void paintEvent( QPaintEvent * event )
    {
        QFrame::paintEvent(event);
 
 
 
        QPainter p(this);
        QRect r = rect();
 
        p.setPen(Qt::red);
 
        p.drawText(r, Qt::AlignCenter, "hello");
 
       //p.drawRect(r);
       p.fillRect(r,Qt::lightGray);
 
 
 
 
 
 
 
        //p.drawLine( rect().topLeft(), rect().bottomRight() );
        //p.drawText( rect().center(), "works!" );
    }
};
 
 
 
#endif // FRAMECLASS_H

---

frameclass.cpp

Code:

---

#include "frameclass.h"
 
 
frameclass::frameclass()
{
 
 
}

---

For line numbering, I have been following this example.

http://qt-project.org/doc/qt-4.8/wid...odeeditor.html

This is how my Ui looks like...

Attachment 9842


Can anyone please help me out with this so as to how can i introduce line numbering??

Why don't you just copy the class CodeEditor from the example and use it as it is.

@Santosh Sir, I would have copied the entire code if there if I would have required only one textedit and its line numbers. I have a Ui containing multiple widgets as i posted in the previous post the image of my Ui.. I wish to pass the Ui object of textedit to the CodeEditor class. Can you suggest me how to do this? This is mainly what I am looking for. Any help would be appreciable.

I am not able to understand your requirement.

Quote:

---

I have a Ui containing multiple widgets as i posted in the previous post the image of my Ui..

---

The UI you posted is a MainWindow containing a textedit. Where are the multiple widgets in it?

Quote:

---

I wish to pass the Ui object of textedit to the CodeEditor class. Can you suggest me how to do this?

---

CodeEditor itself is a textedit. What is the UI you are talking about?

@Santosh Sir, sorry I posted wrong image. This is the updated one..Attachment 9844..with multiple widgets..

Looks like you want to insert CodeEdit from Qt Designer, If yes you have two options.
1. Make a Qt Designer plungin for CodeEdit
or
2. Add a regular QWidget in UI and promote it to CodeEdit.

Thank you very much @Santosh Sir...was stuck at this from so long.. Finally able to do it... Thanks a lott....:)

@Santosh Sir, I have one more question. Sorry posted a few threads about this but didn't get any replies so I am continuing this thread. I have a doubt regarding regular expressions.

Can we write a single piece of code for all the operators instead of writing code for each and every operator to include them as a regular expression?

Quote:

---

QRegExp rx;

---

I wish to initialize rx in such a way that it should include all arithmetic operators. Is there a way out for this? Can nyone please help me out?

You have already asked this question (and several others like it) in its own thread. You received a response asking you to define the problem better and giving you a suggestion on how to improve your understanding... that you just ignored. I suggest you start reading responses you get rather than simply asking the same questions over and over until someone gives you something you can copy and paste without understanding.