File size limitation in qt

I have a text file size of 3.33MB which i need to render in the text browser. But only 1MB of text file data is read and rendered.
It would be helpfull i could know the text file size limit to render in qt.

I am using the following code.

Code:

---

#include "file.h"
#include "ui_file.h"
#include<QFile>
#include<QTextStream>
#include<QMessageBox>
 
file::file(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::file)
{
    ui->setupUi(this);
}
 
file::~file()
{
    delete ui;
}
 
void file::on_pushButton_clicked()
{
    QFile file ("D:\\Users\\aisu1452\\Thales_db_frgbsa9.pc");
 
    if(!file.open(QIODevice :: ReadOnly))
    {
        QMessageBox :: information(0,"info", file.errorString());
    }
    else
    {
        QTextStream in (&file);
        ui->textBrowser->setText(in.readAll());
    }
 
}

---

There is no "text file size limit" in Qt.

Have you tried QTextBrowser::setSource() to let the widget load the document as it sees fit, instead of loading the whole contents in RAM?

If your text file contains a null character (0x0), the QString returned by readAll() will be effectively truncated at that point. Likewise, I think QTextBrowser will stop loading when it hits a null.