Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
This is the include file that defines all constants and types for accessing the system variable device interface.
ntddsysenv.h contains the following programming interfaces:
IOCTLs
| IOCTL_SYSENV_ENUM_VARIABLES Returns information about system environment variables using SysEnv device. |
| IOCTL_SYSENV_GET_VARIABLE Gets the value of the specified system environment variables using SysEnv device. |
| IOCTL_SYSENV_QUERY_VARIABLE_INFO IOCTL_SYSENV_QUERY_VARIABLE_INFO returns information about system environment variables using SysEnv device. |
| IOCTL_SYSENV_SET_VARIABLE Sets the value of the specified system environment variables using SysEnv device. |
Structures
| SYSENV_VALUE Stores the value of a system environment variable using SysEnv device. This structure is used in the IOCTL_SYSENV_GET_VARIABLE request. |
| SYSENV_VARIABLE Stores the name a system environment variable using SysEnv device. This structure is used in the IOCTL_SYSENV_GET_VARIABLE request. |
| SYSENV_VARIABLE_INFO Stores the information about a system environment variable using SysEnv device. This structure is used in the IOCTL_SYSENV_QUERY_VARIABLE_INFO request. |
| XVARIABLE_NAME Stores the name of a system environment variable using SysEnv device. This structure is used in the IOCTL_SYSENV_ENUM_VARIABLES request. |
| XVARIABLE_NAME_AND_VALUE Stores the name and value of a system environment variable using SysEnv device. This structure is used in the IOCTL_SYSENV_ENUM_VARIABLES and IOCTL_SYSENV_SET_VARIABLE requests. |