DrvSetDeviceIdParameter

LONG
    DrvSetDeviceIdParameter(
        PREG_ACCESS RegAccess,
        UINT DeviceNumber,
        PTCHAR ValueName,
        DWORD Value
        );

The DrvSetDeviceIdParameter function assigns the specified value to the specified value name in the registry, under the specified device’s \Parameters key.

Parameters

RegAccess

Pointer to a globally-defined structure of type REG_ACCESS.

DeviceNumber

Device number. Used as an index to the device subkeys under the \Parameters key. See the Comments section below.

ValueName

Pointer to a string representing the value name.

Value

Value to be written.

Return Value

Returns ERROR_SUCCESS if the operation succeeds. Otherwise returns one of the error codes defined in winerror.h. See the Comments section below.

Comments

The structure pointed to by RegAccess must be a single, globally-defined REG_ACCESS structure that the driver uses with all calls to drvlib.lib functions requiring a RegAccess parameter.

Before a driver can call the DrvSetDeviceIdParameter function, it must call DrvCreateDeviceKey.

The value name and value are written to the registry path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DriverName\Parameters\DeviceNumber, where Number represents the number supplied by the DeviceNumber parameter.

The specified value is stored as a REG_DWORD type.

The function calls RegSetValueEx, which is described in the Win32 SDK, and returns its return value.

To retrieve a registry value written with DrvSetDeviceIdParameter, call DrvQueryDeviceIdParameter.

Drivers must call DrvCreateServicesNode before calling DrvSetDeviceIdParameter.

For additional information, see Installing and Configuring your Driver, Using drvlib.lib.