WdfDeviceAssignInterfaceProperty function (wdfdevice.h)

Article
02/22/2024

Important

Applies to UMDF only

The WdfDeviceAssignInterfaceProperty method modifies the current value of a device interface property.

Note

To retrieve or modify a device interface property, a KMDF driver must call IoGetDeviceInterfacePropertyData or IoSetDeviceInterfacePropertyData directly.

Syntax

NTSTATUS WdfDeviceAssignInterfaceProperty(
  [in]           WDFDEVICE                           Device,
  [in]           PWDF_DEVICE_INTERFACE_PROPERTY_DATA PropertyData,
  [in]           DEVPROPTYPE                         Type,
  [in]           ULONG                               BufferLength,
  [in, optional] PVOID                               PropertyBuffer
);

Parameters

[in] Device

A handle to a framework device object.

[in] PropertyData

A pointer to WDF_DEVICE_INTERFACE_PROPERTY_DATA structure.

[in] Type

A DEVPROPTYPE-typed value that specifies the type of the data that is provided in PropertyBuffer.

[in] BufferLength

Specifies the length, in bytes, of the buffer that PropertyBuffer points to.

[in, optional] PropertyBuffer

A pointer to the device interface property data. Set this parameter to NULL to delete the specified property.

Return value

If the WdfDeviceAssignInterfaceProperty method encounters no errors, it returns STATUS_SUCCESS. Additional return values include:

Return code	Description
STATUS_INVALID_PARAMETER	One of the parameters is incorrect.

The method might return other NTSTATUS values.

Remarks

For information about related methods, see Accessing the Unified Device Property Model.

Examples

The following code example initializes a WDF_DEVICE_INTERFACE_PROPERTY_DATA structure and then calls WdfDeviceAssignInterfaceProperty.

DEFINE_DEVPROPKEY(DEVPKEY_ToasterCrispLevelDword, 0x5d0ba64a, 0x2396, 0x4bc9, 0xbf, 0x49, 0x52, 0x1d, 0xa6, 0x2b, 0x1b, 0xed, 3);  // DEVPROP_TYPE_UINT32

ULONG crispLevel = 0;
WDF_DEVICE_INTERFACE_PROPERTY_DATA propertyData;

WDF_DEVICE_INTERFACE_PROPERTY_DATA_INIT(
                          &propertyData, 
                          &GUID_DEVINTERFACE_TOASTER_DRIVER
                          &DEVPKEY_ToasterCrispLevelDword
                          );

status = WdfDeviceAssignInterfaceProperty(device, 
                                          &propertData,
                                          DEVPROP_TYPE_UINT32,
                                          sizeof(crispLevel),
                                          &crispLevel);
if (!NT_SUCCESS(status)) {
    return status;
}

Requirements

Requirement	Value
Minimum supported client	Windows 8.1
Target Platform	Universal
Minimum UMDF version	2.0
Header	wdfdevice.h (include Wdf.h)
Library	WUDFx02000.lib
DLL	WUDFx02000.dll
IRQL	PASSIVE_LEVEL

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