Huge Text File

[mcosta]

Hi to all!

I have to show content of huge Text file (about 70 MB and 100000 lines).

I tried with QTextEdit and QTextEdit::setPlainText but it's very slow.
Also iterating the Text File and appending line like

...
QFile file(fileName);
file.open(QIODevice::ReadOnly | QIODevice::Text);
 
while(!file.atEnd())
{
    textEdit->append(file.readLine());
}
file.close();
...

...
QFile file(fileName);
file.open(QIODevice::ReadOnly | QIODevice::Text);

while(!file.atEnd())
{
    textEdit->append(file.readLine());
}
file.close();
...

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The file contents are truncated in textEdit.

Help please