# QSysInfo Class Reference ## [[QtCore](index.htm) module] 該QSysInfo類提供有關系統的信息。[More...](#details) ### Types * `enum Endian { BigEndian, LittleEndian, ByteOrder }` * `enum Sizes { WordSize }` ### Methods * `__init__ (self)` * `__init__ (self, QSysInfo)` * * * ## Detailed Description 該QSysInfo類提供有關系統的信息。 * [WordSize](qsysinfo.html#Sizes-enum) specifies the size of a pointer for the platform on which the application is compiled. * [ByteOrder](qsysinfo.html#Endian-enum) specifies whether the platform is big-endian or little-endian. * [WindowsVersion](qsysinfo.html#WindowsVersion-var) specifies the version of the Windows operating system on which the application is run (Windows only) * [MacintoshVersion](qsysinfo.html#MacintoshVersion-var) specifies the version of the Macintosh operating system on which the application is run (Mac only). 一些常量只在某些平臺上定義的。您可以使用預處理器符號[Q_WS_WIN](index.htm#Q_WS_WIN)和[Q_WS_MAC](index.htm#Q_WS_MAC)要測試該應用程序的Windows或Mac下編譯。 * * * ## Type Documentation ``` QSysInfo.Endian ``` | Constant | Value | Description | | --- | --- | --- | | `QSysInfo.BigEndian` | `0` | big-endian字節順序（也稱為網絡字節順序） | | `QSysInfo.LittleEndian` | `1` | little-endian字節順序 | | `QSysInfo.ByteOrder` | `<platform-dependent>` | 等于大尾端或LittleEndian ，取決于該平臺的字節順序。 | ``` QSysInfo.Sizes ``` 此枚舉提供有關數據結構所使用的底層架構的大小平臺特定的信息。 | Constant | Value | Description | | --- | --- | --- | | `QSysInfo.WordSize` | `( sizeof( void * ) <<3 )` | 在指針上編譯應用程序平臺（ 32或64 ）的位的大小。 | * * * ## Method Documentation ``` QSysInfo.__init__ (self) ``` ``` QSysInfo.__init__ (self, QSysInfo) ```