QSysInfo Class

The QSysInfo class provides information about the system. More...

Header:	#include <QSysInfo>
qmake:	QT += core

Public Types

enum	Endian { BigEndian, LittleEndian, ByteOrder }
enum	Sizes { WordSize }

Detailed Description

WordSize specifies the size of a pointer for the platform on which the application is compiled.
ByteOrder specifies whether the platform is big-endian or little-endian.

Some constants are defined only on certain platforms. You can use the preprocessor symbols Q_OS_WIN and Q_OS_MACOS to test that the application is compiled under Windows or macOS.

See also QLibraryInfo.

Member Type Documentation

enum QSysInfo::Endian

Constant	Value	Description
`QSysInfo::BigEndian`	`0`	Big-endian byte order (also called Network byte order)
`QSysInfo::LittleEndian`	`1`	Little-endian byte order
`QSysInfo::ByteOrder`	`BigEndian or LittleEndian`	Equals BigEndian or LittleEndian, depending on the platform's byte order.

enum QSysInfo::Sizes

This enum provides platform-specific information about the sizes of data structures used by the underlying architecture.

Constant	Value	Description
`QSysInfo::WordSize`	`(sizeof(void *)<<3)`	The size in bits of a pointer for the platform on which the application is compiled (32 or 64).