System Version

Nan Feng

Hi, I want to determine whether the calculated version is window 7 or window 10. I looked up the information and said it was using the QSysInfo class. But some of the apis in it seem to be deprecated. I am using 5.15.2. What is the alternative to the deprecated api?

JonB

@Nan-Feng
So for non-obsoleted, you have QSysInfo::productVersion(), QSysInfo::prettyProductName() and QSysInfo::kernelVersion().

I imagine maintaining a list like the old QSysInfo::windowsVersion() got too old/tiresome for Qt to keep it going. Use a native Windows system call if you want information not provided by Qt.

Kent-Dorfman

call the DBMS interface to the windows registry and enter the correct SQL query to ask the registery.

Cobra91151

Hello!

You can use the QOperatingSystemVersion class (https://doc.qt.io/qt-5/qoperatingsystemversion.html). The current() method (https://doc.qt.io/qt-5/qoperatingsystemversion.html#current) returns the current OS and its version number. Feel free to check out my code below.

Code:

  QOperatingSystemVersion currentOSVersion = QOperatingSystemVersion::current();

  if (currentOSVersion >= QOperatingSystemVersion::Windows10) {
      qDebug() << "Windows 10 build: " + QString("%1.%2.%3").arg(QString::number(QOperatingSystemVersion::current().majorVersion()),
                                                                 QString::number(QOperatingSystemVersion::current().minorVersion()),
                                                                 QString::number(QOperatingSystemVersion::current().microVersion()));
  } else if (currentOSVersion >= QOperatingSystemVersion::Windows7) {
      qDebug() << "Windows 7 build: " + QString("%1.%2.%3").arg(QString::number(QOperatingSystemVersion::current().majorVersion()),
                                                                QString::number(QOperatingSystemVersion::current().minorVersion()),
                                                                QString::number(QOperatingSystemVersion::current().microVersion()));
  }

My code only checks for Win 10 and Win 7, but you can check also for other operating systems for example: Win 8 and Win 8.1. Happy coding!