Return number of directories in a directories

[franco.amato]

Hi to all I have this code:

QDir dir = QDir::root();
if( !dir.cd("IrisDatabase") )
{
  qWarning("Cannot find the directory, creating it...");
  dir.mkdir("IrisDatabase");
  qDebug("Created");
}
else
  qDebug("Directory ok");
 
uint num = dir.entryList().count();
qDebug() << num;

QDir dir = QDir::root();
if( !dir.cd("IrisDatabase") )
{
  qWarning("Cannot find the directory, creating it...");
  dir.mkdir("IrisDatabase");
  qDebug("Created");
}
else
  qDebug("Directory ok");

uint num = dir.entryList().count();
qDebug() << num;

To copy to clipboard, switch view to plain text mode 

I would know why dir.entryList().count() returns 2 when the "IrisDatabase" directory is empty instead of 0.
I would list the number of directories contained on IrisDatabase
Where my code is wrong?