[Qt-interest] Dialog always opens, why?

[Knapp]

All I wanted was to test for error and if there was an error pop up a
message box. This pops up the box every time. The ! does not make any
difference.

QFile inputFile;
inputFile.setFileName("Thrust.txt");
if(!inputFile.open(QIODevice::ReadOnly));
{
        QLabel *label = new QLabel("File Error");
        label->show();
        //delete label;
}

-- 
Douglas E Knapp

Why do we live?