WdfRegistryRemoveValue function (wdfregistry.h)

Artikel
02/22/2024

[Applies to KMDF and UMDF]

The WdfRegistryRemoveValue method removes a specified value and its data from a specified registry key.

Syntax

NTSTATUS WdfRegistryRemoveValue(
  [in] WDFKEY           Key,
  [in] PCUNICODE_STRING ValueName
);

Parameters

[in] Key

A handle to a registry-key object that represents an opened registry key.

[in] ValueName

A pointer to a UNICODE_STRING structure that contains a value name.

Return value

WdfRegistryRemoveValue returns STATUS_SUCCESS if the operation succeeds. Otherwise, the method might return one of the following values:

Return code	Description
STATUS_INVALID_DEVICE_REQUEST	WdfRegistryRemoveValue was not called at IRQL = PASSIVE_LEVEL.
STATUS_INVALID_PARAMETER	An invalid parameter was specified.
STATUS_ACCESS_DENIED	The driver did not open the registry key with KEY_SET_VALUE access.

This method also might return other NTSTATUS values.

A bug check occurs if the driver supplies an invalid object handle.

Remarks

For more information about registry-key objects, see Using the Registry in Framework-Based Drivers.

Examples

The following code example removes the MyValue value and its data from a specified registry key.

DECLARE_CONST_UNICODE_STRING(valueName, L"MyValue");

status = WdfRegistryRemoveValue(
                                Key,
                                &valueName
                                );

Requirements

Requirement	Value
Target Platform	Universal
Minimum KMDF version	1.0
Minimum UMDF version	2.0
Header	wdfregistry.h (include Wdf.h)
Library	Wdf01000.sys (KMDF); WUDFx02000.dll (UMDF)
IRQL	PASSIVE_LEVEL
DDI compliance rules	DriverCreate(kmdf), KmdfIrql(kmdf), KmdfIrql2(kmdf), KmdfIrqlExplicit(kmdf)

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