System Information Functions

The following functions are used to retrieve or set system information.

Function	Description
DnsHostnameToComputerName	Converts a DNS name to a NetBIOS name.
EnumSystemFirmwareTables	Enumerates all system firmware tables of the specified type.
ExpandEnvironmentStrings	Replaces environment-variable strings with their defined values.
GetComputerName	Retrieves the NetBIOS name of the local computer.
GetComputerNameEx	Retrieves the NetBIOS or DNS name of the local computer.
GetComputerObjectName	Retrieves the local computer's name in a specified format.
GetCurrentHwProfile	Retrieves the current hardware profile for the local computer.
GetFirmwareEnvironmentVariable	Retrieves the value of the specified firmware environment variable from NVRAM.
GetNativeSystemInfo	Retrieves information about the current system for an application running under WOW64.
GetProductInfo	Retrieves the product type for the operating system on the local computer, and maps the type to the product types supported by the specified operating system.
GetSystemDirectory	Retrieves the path of the system directory.
GetSystemFirmwareTable	Retrieves the specified firmware table from the firmware table provider.
GetSystemInfo	Retrieves information about the current system.
GetSystemRegistryQuota	Retrieves the current size of the registry and the maximum size that the registry is allowed to attain on the system.
GetSystemWindowsDirectory	Retrieves the path of the shared Windows directory on a multi-user system.
GetSystemWow64Directory	Retrieves the path of the system directory used by WOW64.
GetUserName	Retrieves the user name of the current thread.
GetUserNameEx	Retrieves the name of the user or other security principal associated with the calling thread. You can specify the format of the returned name.
GetVersion	Retrieves the version number of the current operating system.
GetVersionEx	Retrieves information about the current operating system.
GetWindowsDirectory	Retrieves the path of the Windows directory.
IsProcessorFeaturePresent	Determines whether a processor feature is supported by the current computer.
IsWow64Message	Determines whether the last message read from the queue of the current process originated from a WOW64 process.
IsWow64Process	Determines whether a process is running under WOW64.
SetComputerName	Sets a new NetBIOS name for the local computer.
SetComputerNameEx	Sets a new NetBIOS or DNS name for the local computer.
SetFirmwareEnvironmentVariable	Sets the value of the specified firmware environment variable in NVRAM.
TranslateName	Converts a directory service object name from one format to another.
VerifyVersionInfo	Compares a set of version requirements to the values for the current operating system.
VerSetConditionMask	Builds the condition mask for the VerifyVersionInfo function.
Wow64DisableWow64FsRedirection	Disables file system redirection for the calling thread.
Wow64EnableWow64FsRedirection	Enables or disables file system redirection for the calling thread.
Wow64RevertWow64FsRedirection	Restores file system redirection for the calling thread.

 

Obsolete Functions

• NtQuerySystemInformation
• ZwQuerySystemInformation

 

http://msdn.microsoft.com/en-us/library/ms724953(v=VS.85).aspx