How to manipulate a text in QTextEdit

[stampede]

for (quint32 t = 0 ; t <= (txt.size()/8) ; t = t+11 )
    {
        txt.insert( t , QString(",0x"));
 
    }

for (quint32 t = 0 ; t <= (txt.size()/8) ; t = t+11 )
    {
        txt.insert( t , QString(",0x"));
 
    }

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You are comparing the count of characters (stored in "t" and moved by 11 positions on each iteration) with the number of "octets" in the string. The former will always be greater and the loop will end sooner than you expect.
Look at this simple example with the string "0123456789abcdef" (16 chars):

iteration 0:
t=0, string = "0123456789abcdef"
t <= 2 ? true

iteration 1:
t=11, string = ",0x0123456789abcdef"
t <= (19/8) ? false


IMHO this would be a lot easier this way:

QString txt = ui->textEdit->toPlainText();
QStringList tmp;
while (txt.isEmpty()==false) {
    tmp << txt.left(8);
    txt.remove(0,8);
}
ui->textEdit->setText(tmp.join(",0x"));

QString txt = ui->textEdit->toPlainText();
QStringList tmp;
while (txt.isEmpty()==false) {
    tmp << txt.left(8);
    txt.remove(0,8);
}
ui->textEdit->setText(tmp.join(",0x"));

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