Publishing a WMI Schema
To publish a WMI schema, a driver writer first creates a text file in Managed Object Format (MOF) language that contains a class definition for each data block and event block in the schema, as described in MOF Syntax for WMI Data and Event Blocks.
A driver writer can then publish a driver's WMI schema in one of the following ways:
Compile the MOF file and include it as a resource in the driver's binary image. For more information, see Compiling a Driver's MOF File.
Include the compiled MOF file as a resource in a different file, such as a DLL, and add the registry value MofImagePath with a path to the file that contains the MOF under the driver's Service key. A schema published in this way can be updated without recompiling the driver. For more information, see Setting the MofImagePath Registry Value.
Include binary data within the driver and return it when WMI requests it. A schema published in this way can be changed dynamically at runtime. For more information, see Implementing Dynamic MOF Data.