Setting Hardware Information in the Registry

It is recommended that miniport drivers set certain hardware information in the registry to display useful information to the user and for assistance in debugging. A miniport driver can set a chip type, DAC type, memory size (of the adapter), and a string to identify the adapter. This information is displayed by the control panel display applet.

The driver sets this information by calling VideoPortSetRegistryParameters. The following table outlines for the two variable parameters to VideoPortSetRegistryParameters and what data should be passed.

Information for Entry

ValueName

ValueData

Chip type

HardwareInformation.ChipType

Null terminated string containing the chip name.

DAC type

HardwareInformation.DacType

Null terminated string containing the DAC name or ID.

Memory size

HardwareInformation.MemorySize

ULONG containing, in MB, the amount of video memory on the adapter.

ID String

HardwareInformation.AdapterString

Null-terminated string containing the name of the adapter.

Information for Entry	*ValueName*	*ValueData*
Chip type	HardwareInformation.ChipType	Null terminated string containing the chip name.
DAC type	HardwareInformation.DacType	Null terminated string containing the DAC name or ID.
Memory size	HardwareInformation.MemorySize	ULONG containing, in MB, the amount of video memory on the adapter.
ID String	HardwareInformation.AdapterString	Null-terminated string containing the name of the adapter.