ASCII Number to Strings & Chars

[ttimt]

hmmm.... it seems the problem is QStringList results have nothing in it? Hopefully im right
And when i use canReadLine(), the program actually outputted cant read line

QStringList result;
    result << "Something" << "abc";
    QFile input("configp.dll");
 
if (input.open(QIODevice::ReadOnly )) {
 
        if(input.canReadLine()){
 
            ui->hLine->setText("can read");
 
        }else{
 
            //EDITED : removed this line QApplication::processEvents();
            ui->hLine->setText("cant read line"); //outputted this " can't read line "
            }
 
            while (!input.atEnd()){
 
                     QByteArray line = input.readLine().simplified(); //trimmed to simplified
                     QString foo;                       //actually which line of code chris provided converted ascii numbers to char?
 
                        foreach(QByteArray num, line.split(' ')) {
                       foo.append( QChar(num.toShort()) ); // is it this .toShort?
                       }
                result << foo;// if use line->setText() here also output same..
            }
           ui->aLine->setText(result.at(0)); // this output Something
 
           ui->fLine->setText(result.at(1)); //this output abc not anything from the file

QStringList result;
    result << "Something" << "abc";
    QFile input("configp.dll");

if (input.open(QIODevice::ReadOnly )) {

        if(input.canReadLine()){

            ui->hLine->setText("can read");

        }else{

            //EDITED : removed this line QApplication::processEvents();
            ui->hLine->setText("cant read line"); //outputted this " can't read line "
            }

            while (!input.atEnd()){

                     QByteArray line = input.readLine().simplified(); //trimmed to simplified
                     QString foo;                       //actually which line of code chris provided converted ascii numbers to char?
 
                        foreach(QByteArray num, line.split(' ')) {
                       foo.append( QChar(num.toShort()) ); // is it this .toShort?
                       }
                result << foo;// if use line->setText() here also output same..
            }
           ui->aLine->setText(result.at(0)); // this output Something

           ui->fLine->setText(result.at(1)); //this output abc not anything from the file

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Edited : if i add these code below, it actually shows "can read"

if (input.open(QIODevice::ReadOnly )) {
char c;
input.getChar(&c);
 if(input.canReadLine()){
            ui->hLine->setText("can read");
        }else{
            ui->hLine->setText("cant read line");
        }

if (input.open(QIODevice::ReadOnly )) {
char c;
input.getChar(&c);
 if(input.canReadLine()){
            ui->hLine->setText("can read");
        }else{
            ui->hLine->setText("cant read line");
        }

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EDITED: AND HEY, AFTER HOURS OF CODING, I MANGED TO LET IT shows up on aLine But (didn't know i put it inside while loop)after showing up, it still goes runtime error, so i guess i gonna figure out what wysota(hope i spell it correct) is saying

EDITED: I actually found i duplicated settext that caused error. it's working now but figuring out how to output only available line. By the way, will moderator ban for too many edits? I still have some problems with rename. qdir wont work too

EDITED: it now shows runtime error again.
EDITED: i actually jumped setText() from 0 to 3 where i only wanna jump 0 to 2, NOTE the rename still doesn't work

QFile chk("configp.dll");
    chk.open(QIODevice::ReadOnly);
    if(chk.exists()){
 
        QFile exs("configp1.dll");
                if(exs.open(QIODevice::ReadOnly))
                exs.remove();   //this can delete, works very well
 
 
        chk.rename("configp1.dll"); // it wont rename
 
    }else{

QFile chk("configp.dll");
    chk.open(QIODevice::ReadOnly);
    if(chk.exists()){

        QFile exs("configp1.dll");
                if(exs.open(QIODevice::ReadOnly))
                exs.remove();   //this can delete, works very well


        chk.rename("configp1.dll"); // it wont rename

    }else{

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