qextserialport cant open ports in windows 7

Hi,
I was trying to open the COM ports using the qextserialport example that came with it. It worked fine on Wondows XP. But in Windows 7, it did not; that is port opening was unsuccessful. I even tried to prepend the "\\\\.\\" to the com port name to have something like: "\\\\.\\COM6", but it still failed.
Does anyone know what might be the problem, or the workaround for this?

As I remeber on Windows 7 standard user don't have rigths to use COM ports.

Now that you have mentioned that I also suspect that. But, I was using it as the user with administrative privileges, unless something additional has to be done.

I have no idea. Which version of qextserial ?

qextserialport-1.2beta1