[Qt-interest] [Qt interest] QByteArray conversion

[Gerardo Gutierrez]

This piece of code intends to read a file with "double" data to plot, it
doesn't matter wich index i put in signal to write on stdout it's zero, and
obviously the plot is a nice line at zero.


PaintArea::PaintArea(QString ffile)
{
        fileSize=0;
int i=0;
        QFile file(ffile);
        if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
                return;

        while (!file.atEnd()) {
                QByteArray line = file.readLine();
                fileSize++;
        }
signal=(double*)malloc(fileSize*sizeof(double));
while (!file.atEnd()) {
                QByteArray line = file.readLine();
                signal[i]=line.toDouble();
i++;
        }
 cout<<signal[35]<<endl;
}


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