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#ifndef ENV_WINDOWS_H
#define ENV_WINDOWS_H
#include <QString>
#include <optional>
namespace env
{
// a variety of information on windows
//
class WindowsInfo
{
public:
struct Version
{
DWORD major = 0, minor = 0, build = 0;
QString toString() const
{
return QString("%1.%2.%3").arg(major).arg(minor).arg(build);
}
friend bool operator==(const Version& a, const Version& b)
{
return a.major == b.major && a.minor == b.minor && a.build == b.build;
}
friend bool operator!=(const Version& a, const Version& b) { return !(a == b); }
};
struct Release
{
// the BuildLab entry from the registry, may be empty
QString buildLab;
// release ID such as 1809, may be empty
QString ID;
// some sub-build number, undocumented, may be empty
DWORD UBR;
Release() : UBR(0) {}
};
WindowsInfo();
// tries to guess whether this process is running in compatibility mode
//
bool compatibilityMode() const;
// returns the Windows version, may not correspond to the actual version
// if the process is running in compatibility mode
//
const Version& reportedVersion() const;
// tries to guess the real Windows version that's running, can be empty
//
const Version& realVersion() const;
// various information about the current release
//
const Release& release() const;
// whether this process is running as administrator, may be empty if the
// information is not available
std::optional<bool> isElevated() const;
// returns a string with all the above information on one line
//
QString toString() const;
private:
Version m_reported, m_real;
Release m_release;
std::optional<bool> m_elevated;
// uses RtlGetVersion() to get the version number as reported by Windows
//
Version getReportedVersion(HINSTANCE ntdll) const;
// uses RtlGetNtVersionNumbers() to get the real version number
//
Version getRealVersion(HINSTANCE ntdll) const;
// gets various information from the registry
//
Release getRelease() const;
// gets whether the process is elevated
//
std::optional<bool> getElevated() const;
};
} // namespace env
#endif // ENV_WINDOWS_H
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