System Information Functions
The following functions are used to retrieve or set system information.
| Function | Description |
|---|---|
| CeipIsOptedIn | Checks whether the user has opted in for SQM data collection as part of the Customer Experience Improvement Program (CEIP). |
| 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. |
| GetFirmwareEnvironmentVariableEx | Retrieves the value of the specified firmware environment variable and its attributes. |
| GetFirmwareType | Retrieves the firmware type of the local computer. |
| GetIntegratedDisplaySize | Retrieves the best estimate of the diagonal size of the built-in screen, in inches. |
| 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. |
| GetSystemWow64Directory2 | Retrieves the path of the system directory used by WOW64, using the specified image file machine type. |
| 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. |
| IsNativeVhdBoot | Indicates if the OS was booted from a VHD container. |
| IsWow64GuestMachineSupported | |
| 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. |
| QueryPerformanceCounter | Retrieves the current value of the high-resolution performance counter. |
| QueryPerformanceFrequency | Retrieves the frequency of the high-resolution performance counter. |
| RtlGetSuiteMask | Retrieves a bit mask that identifies the product suites available on the system. If this function is called in an application that runs in the context of a server silo, the suite mask for the server silo is retrieved instead. |
| 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. |
| SetFirmwareEnvironmentVariableEx | Sets the value of the specified firmware environment variable and its attributes. |
| 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